Doug's Headers - D590
Headers - 1.75 in Primary - 3 in Collector - Gaskets / Hardware Included - Steel - Silver Ceramic-Metallic - Pontiac V8 GTO 1968-72 - Pair
Doug's Long Tube Header 68-72 GTO 326-455 W/O EGR/A.I.R. 1 3/4" Primary 3" Collector Silver Ceramic Coated D590
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.
- 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
Collector Attachment: 3-Bolt Flange
Collector Diameter: 3.0
Collector Port Diameter: 3.0
Color: Silver
Cylinder Head Port Shape: D-port
Design: Full-length
EGT Port: No
EmissionFullDES: 4 - This Product is considered a 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 Manufacturer’s Application Guide and Installation Instructions.
Finish: Metallic Ceramic Coated
Flange Thickness: 0.375
Gasket Or Seal Included: Yes
Gaskets Included: Yes
Grade Type: Performance
Header Material: Steel
Header Style: Full-length
Material: Steel
Mounting Hardware Included: Yes
Oxygen Sensor Port: No
Port Shape: D-port
Primary Tube Outside Diameter: 1.75
Primary Tubing Diameter: 1.75
Sheen Level: Semi-Gloss
Tube Wall Thickness: 16
