Doug's Headers - D623

Doug's Headers D623 1 3/4" 4-Tube Full Length Header Ford Mustang 64-73 Cougar 67-68 Fairlane 66-67 Comet 62-65 Ranchero 60-67 260-351W Falcon 60-65 260-302 with TCI or similar Mustang II Steering Swap Metallic Ceramic Coating

Doug's Headers D623 1 3/4" 4-Tube Full Length Header Ford Mustang 64-73 Cougar 67-68 Fairlane 66-67 Comet 62-65 Ranchero 60-67 260-351W Falcon 60-65 260-302 with TCI or similar Mustang II Steering Swap Metallic Ceramic Coating

Part Number: D623 / UPC 694342541675
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Features & Benefits

  • 3/8" Thick machined flanges to prevent warping
  • Precision formed long transition collectors and long tube design reduces backpressure and increases higher RPM horsepower
  • Heavy duty 16-gauge tubing for long life
  • Tubes are pre-polished to removed scratches before applying metallic ceramic or hi-temp black coating

Long tube headers provide the greatest increases in horsepower and torque across the entire RPM spectrum. The choice of racers worldwide, Doug's long tube headers are designed for the car owner who wants maximum power and the highest quality header on the market. This fitment is tailored for popular aftermarket engine swap kits. Doug's engine swap headers were developed to solve common fitment issues in tight spaces, making your swap process smoother. No more guesswork or modifications needed - just straightforward installations that save you time and frustration.


For the enthusiast who demands the best, Doug's Headers are not just components; they're a statement of excellence, a commitment to leading-edge performance, and a nod to the glory days of muscle cars and drag racing. Join the ranks of champions. Experience the unmatched quality and performance of Doug's Headers today.

Specifications

Finish Metallic Ceramic Coated
Material Steel
Design Full-length
Primary Tubing Diameter 1.75 IN
Collector Port Diameter 3.0 IN
Port Shape SAP
Tube Wall Thickness 16 Gauge
Flange Thickness 0.375 IN
Collector Attachment 3-Bolt Flange
EGT Port No
Oxygen Sensor Port No
Gasket Or Seal Included Yes
Mounting Hardware Included Yes
Color Silver
Sheen Level Semi-Gloss

Installation instructions

Instruction Manual
Installation Instructions

Download PDF

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 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

Doug's Headers - D623

Doug's Headers D623 1 3/4" 4-Tube Full Length Header Ford Mustang 64-73 Cougar 67-68 Fairlane 66-67 Comet 62-65 Ranchero 60-67 260-351W Falcon 60-65 260-302 with TCI or similar Mustang II Steering Swap Metallic Ceramic Coating

Doug's Headers D623 1 3/4" 4-Tube Full Length Header Ford Mustang 64-73 Cougar 67-68 Fairlane 66-67 Comet 62-65 Ranchero 60-67 260-351W Falcon 60-65 260-302 with TCI or similar Mustang II Steering Swap Metallic Ceramic Coating

Part Number: D623 / UPC 694342541675
Regular price $899.95
Sale price $899.95 Regular price

Part Number: D623 / UPC 694342541675
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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
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Emissions Code

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Features & Benefits

  • 3/8" Thick machined flanges to prevent warping
  • Precision formed long transition collectors and long tube design reduces backpressure and increases higher RPM horsepower
  • Heavy duty 16-gauge tubing for long life
  • Tubes are pre-polished to removed scratches before applying metallic ceramic or hi-temp black coating

Long tube headers provide the greatest increases in horsepower and torque across the entire RPM spectrum. The choice of racers worldwide, Doug's long tube headers are designed for the car owner who wants maximum power and the highest quality header on the market. This fitment is tailored for popular aftermarket engine swap kits. Doug's engine swap headers were developed to solve common fitment issues in tight spaces, making your swap process smoother. No more guesswork or modifications needed - just straightforward installations that save you time and frustration.


For the enthusiast who demands the best, Doug's Headers are not just components; they're a statement of excellence, a commitment to leading-edge performance, and a nod to the glory days of muscle cars and drag racing. Join the ranks of champions. Experience the unmatched quality and performance of Doug's Headers today.

Specifications

Finish Metallic Ceramic Coated
Material Steel
Design Full-length
Primary Tubing Diameter 1.75 IN
Collector Port Diameter 3.0 IN
Port Shape SAP
Tube Wall Thickness 16 Gauge
Flange Thickness 0.375 IN
Collector Attachment 3-Bolt Flange
EGT Port No
Oxygen Sensor Port No
Gasket Or Seal Included Yes
Mounting Hardware Included Yes
Color Silver
Sheen Level Semi-Gloss

Installation instructions

Instruction Manual
Installation Instructions

Download PDF

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 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

Applications

Year / Make / Model 1966-1967 Ford Fairlane
Engine Type V8
Notes
  • Fits 260-351W Ford Small Block Engines.
  • Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
  • Manual Transmission require cable or hydraulic clutch
  • Will fit with AOD Transmissions.
  • Fits GT40 P head
  • May require Steering Shaft modifications to fit.

Year / Make / Model 1960-1970 Ford Falcon
Notes
  • Fits 260-302 Ford Small Block Engines.
  • Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
  • Manual Transmission require cable or hydraulic clutch
  • Will fit with AOD Transmissions.
  • Fits GT40 P head
  • May require Steering Shaft modifications to fit.

Year / Make / Model 1948-1952 Ford F-1
Engine Type V8
Notes
  • Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
  • Manual Transmission require cable or hydraulic clutch
  • Will fit with AOD Transmissions.
  • Fits GT40 P head
  • May require Steering Shaft modifications to fit.
  • Fits 260-351W Ford Small Block Engines

Year / Make / Model 1953-1956 Ford F-100
Engine Type V8
Notes
  • Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
  • Manual Transmission require cable or hydraulic clutch
  • Will fit with AOD Transmissions.
  • Fits GT40 P head
  • May require Steering Shaft modifications to fit.
  • Fits 260-351W Ford Small Block Engines

Year / Make / Model 1970-1977 Ford Maverick
Engine Type V8
Notes
  • Fits 260-351W Ford Small Block Engines.
  • Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
  • Manual Transmission require cable or hydraulic clutch
  • Will fit with AOD Transmissions.
  • Fits GT40 P head
  • May require Steering Shaft modifications to fit.

Year / Make / Model 1964-1973 Ford Mustang
Engine Type V8
Notes
  • Fits 260-351W Ford Small Block Engines.
  • Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
  • Manual Transmission require cable or hydraulic clutch
  • Will fit with AOD Transmissions.
  • Fits GT40 P head
  • May require Steering Shaft modifications to fit.

Year / Make / Model 1960-1967 Ford Ranchero
Notes
  • Fits 260-302 Ford Small Block Engines.
  • Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
  • Manual Transmission require cable or hydraulic clutch
  • Will fit with AOD Transmissions.
  • Fits GT40 P head
  • May require Steering Shaft modifications to fit.

Year / Make / Model 1960-1965 Mercury Comet
Notes
  • Fits 260-302 Ford Small Block Engines.
  • Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
  • Manual Transmission require cable or hydraulic clutch
  • Will fit with AOD Transmissions.
  • Fits GT40 P head
  • May require Steering Shaft modifications to fit.

Year / Make / Model 1967-1973 Mercury Cougar
Engine Type V8
Notes
  • Fits 260-351W Ford Small Block Engines.
  • Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
  • Manual Transmission require cable or hydraulic clutch
  • Will fit with AOD Transmissions.
  • Fits GT40 P head
  • May require Steering Shaft modifications to fit.

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