Doug's Headers - D669Y-1R
Doug's Headers D669Y-1R 1 3/4" Tri-Y Header Ford Mustang 351W 67-70 Raw Steel
Doug's Headers D669Y-1R 1 3/4" Tri-Y Header Ford Mustang 351W 67-70 Raw Steel
Product Info
Product Info
- 3/8" Thick machined flanges...no warping
- CNC mandrel bent tubes... accurate fit & better flow
- Tri-Y headers yield maximum power from off idle to 4500 RPM making them well suited for applications demanding maximum mid-range torque with maximum fuel economy
- Heavy 16 gauge tubing...longer life
- Tubes are pre-polished to remove scratches and the header is left unfinished (raw steel) for individual customizing
Applications and Footnotes
Ford - Fairlane | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
66 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Mustang | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
67 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Ranchero | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
66 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Torino | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
66 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Mercury - Comet | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
66 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Mercury - Cougar | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
67 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design |
Applications and Footnotes
Ford - Fairlane | ||||||||||||
YEARS | 66 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Mustang | ||||||||||||
YEARS | 67 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Ranchero | ||||||||||||
YEARS | 66 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Torino | ||||||||||||
YEARS | 66 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Mercury - Comet | ||||||||||||
YEARS | 66 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Mercury - Cougar | ||||||||||||
YEARS | 67 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design |
Highlights
Highlights
- 3/8" Thick machined flanges...no warping
- CNC mandrel bent tubes... accurate fit & better flow
- Tri-Y headers yield maximum power from off idle to 4500 RPM making them well suited for applications demanding maximum mid-range torque with maximum fuel economy
- Heavy 16 gauge tubing...longer life
- Tubes are pre-polished to remove scratches and the header is left unfinished (raw steel) for individual customizing
Applications and Footnotes
Applications and Footnotes
Ford - Fairlane | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
66 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Mustang | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
67 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Ranchero | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
66 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Torino | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
66 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Mercury - Comet | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
66 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Mercury - Cougar | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
67 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design |
Applications and Footnotes
Applications and Footnotes
Ford - Fairlane | ||||||||||||
YEARS | 66 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Mustang | ||||||||||||
YEARS | 67 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Ranchero | ||||||||||||
YEARS | 66 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Torino | ||||||||||||
YEARS | 66 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Mercury - Comet | ||||||||||||
YEARS | 66 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Mercury - Cougar | ||||||||||||
YEARS | 67 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design |
Additional Information
Additional Information
Doug's PASSENGER CAR HEADERS Raw Steel Header development and design is complex and requires a substantial amount of time and resources to do the job right! Many manufacturers are unwilling to make the commitment and instead offer compromised headers at lower prices. Doug's will not compromise performance, quality or fit to compete with inferior designs at cheap prices. Every Doug's header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Doug's headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.
Download instruction manual
Download instruction manual
Shipping & Delivery
Shipping & Delivery
Our ignition and exhaust products ship from our warehouse in Lenexa, KS. Our normal shipping time is 2-3 business days for in-stock parts.
Shipping Class | Order Value | Shipping Cost |
UPS Ground | $0 - 49.99 | $6.99 flat rate |
UPS Ground | $50 - 98.99 | $7.49 flat rate |
UPS Ground | $99+ | Free |
- At this time, PerTronix does not offer expedited shipping options from our website.
- All packages must be inspected upon receipt for any missing or damaged goods and claims for such must be made within 7 days of receipt.
- PerTronix does not currently ship our products internationally from our web store. For international orders call 909-599-5955 or connect with us here.
Returns & Replacements
Returns & Replacements
Returns at Pertronix are accepted within 90 days of purchase with prior authorization, ensuring items are in new, resalable condition. To initiate a return, call for an RGA and follow provided instructions. Customers are responsible for return shipping, using a trackable method.
Refunds exclude initial shipping and handling fees and may be subject to a restocking fee. For defective or damaged items, contact Pertronix directly. We are not responsible for user-initiated damage/loss of parts.
For complete details, visit our Returns page.
Reviews
Reviews
Doug's Headers - D669Y-1R
Doug's Headers D669Y-1R 1 3/4" Tri-Y Header Ford Mustang 351W 67-70 Raw Steel
Doug's Headers D669Y-1R 1 3/4" Tri-Y Header Ford Mustang 351W 67-70 Raw Steel
Need help? Call us at 909-599-5955
- Free shipping on $99+ orders in lower 48 states
- 90-day return policy
- We’re here to help! Call us on 909-599-5955
Emissions Code
Continue Reading to Understand Emissions Codes
Complete Your Installation
Doug's Headers D669Y-1R 1 3/4" Tri-Y Header Ford Mustang 351W 67-70 Raw Steel
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Product Info
Product Info
- 3/8" Thick machined flanges...no warping
- CNC mandrel bent tubes... accurate fit & better flow
- Tri-Y headers yield maximum power from off idle to 4500 RPM making them well suited for applications demanding maximum mid-range torque with maximum fuel economy
- Heavy 16 gauge tubing...longer life
- Tubes are pre-polished to remove scratches and the header is left unfinished (raw steel) for individual customizing
Applications and Footnotes
Ford - Fairlane | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
66 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Mustang | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
67 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Ranchero | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
66 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Torino | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
66 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Mercury - Comet | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
66 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Mercury - Cougar | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
67 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design |
Applications and Footnotes
Ford - Fairlane | ||||||||||||
YEARS | 66 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Mustang | ||||||||||||
YEARS | 67 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Ranchero | ||||||||||||
YEARS | 66 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Torino | ||||||||||||
YEARS | 66 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Mercury - Comet | ||||||||||||
YEARS | 66 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Mercury - Cougar | ||||||||||||
YEARS | 67 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design |
Highlights
Highlights
- 3/8" Thick machined flanges...no warping
- CNC mandrel bent tubes... accurate fit & better flow
- Tri-Y headers yield maximum power from off idle to 4500 RPM making them well suited for applications demanding maximum mid-range torque with maximum fuel economy
- Heavy 16 gauge tubing...longer life
- Tubes are pre-polished to remove scratches and the header is left unfinished (raw steel) for individual customizing
Applications and Footnotes
Applications and Footnotes
Ford - Fairlane | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
66 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Mustang | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
67 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Ranchero | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
66 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Torino | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
66 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Mercury - Comet | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
66 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Mercury - Cougar | ||||||||||||
EMISSION | AUTO | STD | TUBE | COLLECTOR | PORT | |||||||
YEARS | ENGINES | CODE | A/C | P/B | P/S | COL | FLR | COL | FLR | SIZE (in.) | SIZE (in.) | SHAPE |
67 - 70 | 351W | Y | Y | Y | N | Y | N | N | 1 3/4 - 2 | 3 | SAP | |
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design |
Applications and Footnotes
Applications and Footnotes
Ford - Fairlane | ||||||||||||
YEARS | 66 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Mustang | ||||||||||||
YEARS | 67 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Ranchero | ||||||||||||
YEARS | 66 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Ford - Torino | ||||||||||||
YEARS | 66 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Mercury - Comet | ||||||||||||
YEARS | 66 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design | ||||||||||||
Mercury - Cougar | ||||||||||||
YEARS | 67 - 70 | |||||||||||
ENGINES | 351W | |||||||||||
EMISSION CODE | ||||||||||||
A/C | Y | |||||||||||
P/B | Y | |||||||||||
P/S | Y | |||||||||||
AUTO COL | N | |||||||||||
AUTO FLR | Y | |||||||||||
STD COL | N | |||||||||||
STD FLR | N | |||||||||||
TUBE SIZE (in.) | 1 3/4 - 2 | |||||||||||
COLLECTOR SIZE (in.) | 3 | |||||||||||
PORT SHAPE | SAP | |||||||||||
Fits aftermarket cylinder heads with 3" exhaust bolt spacing. May not fit raised port locations. | ||||||||||||
Installation requires power steering bracket PN H7609. | ||||||||||||
Tri-Y design |
Additional Information
Additional Information
Doug's PASSENGER CAR HEADERS Raw Steel Header development and design is complex and requires a substantial amount of time and resources to do the job right! Many manufacturers are unwilling to make the commitment and instead offer compromised headers at lower prices. Doug's will not compromise performance, quality or fit to compete with inferior designs at cheap prices. Every Doug's header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Doug's headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.
Download instruction manual
Download instruction manual
Shipping & Delivery
Shipping & Delivery
Our ignition and exhaust products ship from our warehouse in Lenexa, KS. Our normal shipping time is 2-3 business days for in-stock parts.
Shipping Class | Order Value | Shipping Cost |
UPS Ground | $0 - 49.99 | $6.99 flat rate |
UPS Ground | $50 - 98.99 | $7.49 flat rate |
UPS Ground | $99+ | Free |
- At this time, PerTronix does not offer expedited shipping options from our website.
- All packages must be inspected upon receipt for any missing or damaged goods and claims for such must be made within 7 days of receipt.
- PerTronix does not currently ship our products internationally from our web store. For international orders call 909-599-5955 or connect with us here.
Returns & Replacements
Returns & Replacements
Returns at Pertronix are accepted within 90 days of purchase with prior authorization, ensuring items are in new, resalable condition. To initiate a return, call for an RGA and follow provided instructions. Customers are responsible for return shipping, using a trackable method.
Refunds exclude initial shipping and handling fees and may be subject to a restocking fee. For defective or damaged items, contact Pertronix directly. We are not responsible for user-initiated damage/loss of parts.
For complete details, visit our Returns page.
Reviews
Reviews
EMISSIONS PLACARD
PerTronix Performance Ignition and Exhaust Brands use a voluntary product identification program whereby all emission sensitive products can be identified by placing numbered labels in product packaging and listing corresponding numeric codes next to each part number. The corresponding numbers and explanations are as follows:
PERTRONIX PERFORMANCE BRANDS EMISSIONS CODES
This product has been granted a California Air Resources Board (CARB) Executive Order (EO Number) Exemption. It is 50 State Legal when installed on the Specified vehicle per the Manufacturer’s Current Application Guide, the CARB EO, and Installation Instructions.
PERTRONIX PERFORMANCE BRANDS EMISSIONS CODES
This product is Legal for use on Pre-PoIIution Controlled Vehicles. It is legal for use on all vehicles produced Before Emissions Control Regulations were imposed. These are considered Uncontrolled Vehicles and are defined as follows
- 1965 and Older US Manufactured California Certified Vehicles
- 1967 and Older US Manufactured Federally Certified Vehicles
- 1967 and Older Foreign Manufactured Vehicles
PERTRONIX PERFORMANCE BRANDS EMISSIONS CODES
This Product is LEGAL for Closed Course Competition use or Pre-Emissions Controlled Vehicles ONLY. It is Not Legal for use on any Emissions Controlled Vehicle for Street or Off Highway use.
PERTRONIX PERFORMANCE BRANDS EMISSIONS CODES
This Product is considered а Replacement Part per CARB and EPA regulations for emissions compliance and is legal for sale and use on specified vehicles in all 50 states as stated in Manufactured's Application Guide and lnstallation Instructions.
PERTRONIX PERFORMANCE BRANDS EMISSIONS CODES
This Product is legal for Street or Off Highway use in 49 States. This product meets the EPA Anti Tampering Policy for Reasonable Basis that allows the stated vehicle to operate within the legal emissions standards in states that do not require а California EO. This product in Not Legal for Street or Off Highway use in California.
PERTRONIX PERFORMANCE BRANDS EMISSIONS CODES
This Product is Certified by the Manufacturer as being а Non-Emissions Related part per CARB and EPA regulations and therefore does not require emissions certification or CARB EO and is legal in all 50 states.