Doug's Headers - D743

Doug's Headers D743 1 7/8" 4-Tube Full Length Header Oldsmobile Cutlass 455 68-75 Metallic Ceramic Coating

Doug's Headers D743 1 7/8" 4-Tube Full Length Header Oldsmobile Cutlass 455 68-75 Metallic Ceramic Coating

Part Number: D743 / UPC 694342519384
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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.


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 1.875 IN
Collector Port Diameter 3.5 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 - D743

Doug's Headers D743 1 7/8" 4-Tube Full Length Header Oldsmobile Cutlass 455 68-75 Metallic Ceramic Coating

Doug's Headers D743 1 7/8" 4-Tube Full Length Header Oldsmobile Cutlass 455 68-75 Metallic Ceramic Coating

Part Number: D743 / UPC 694342519384
Regular price $1,044.95
Sale price $1,044.95 Regular price

Part Number: D743 / UPC 694342519384
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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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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.


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 1.875 IN
Collector Port Diameter 3.5 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 1968-1971 Oldsmobile 442
Engine Type V8
Engine Size(s) Liters: 7.5
Cubic Inches: 455
Notes
  • Requires removal or modification of locking steering columns if equipped

Year / Make / Model 1968-1969 Oldsmobile 442
Engine Type V8
Engine Size(s) Cubic Inches: 400
Notes
  • Requires removal or modification of locking steering columns if equipped

Year / Make / Model 1968 Oldsmobile Cutlass
Engine Type V8
Engine Size(s) Cubic Inches: 400
Notes
  • Requires removal or modification of locking steering columns if equipped

Year / Make / Model 1970-1974 Oldsmobile Cutlass
Engine Type V8
Engine Size(s) Cubic Inches: 455
Notes
  • Requires removal or modification of locking steering columns if equipped
  • Does not fit Catalytic Converter equipped cars.

Year / Make / Model 1971-1974 Oldsmobile Delta 88
Engine Type V8
Engine Size(s) Cubic Inches: 455
Notes
  • Requires removal or modification of locking steering columns if equipped
  • Does not fit Catalytic Converter equipped cars.

Year / Make / Model 1968-1969 Oldsmobile Vista Cruiser
Engine Type V8
Engine Size(s) Cubic Inches: 400
Notes
  • Requires removal or modification of locking steering columns if equipped

Year / Make / Model 1970-1974 Oldsmobile Vista Cruiser
Engine Type V8
Engine Size(s) Cubic Inches: 455
Notes
  • Requires removal or modification of locking steering columns if equipped
  • Does not fit Catalytic Converter equipped cars.

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