Long Tube Headers for 65-70 Pontiac 326-455 1-3/4in Primary D521-SS
Long Tube Headers for 65-70 Pontiac 326-455 1-3/4in Primary D521-SS is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Fitment
Fitment
Warranty Information
Warranty Information
Customer service is our top priority and because we value your time and energy we ask you to visit our Contact Us page and reach out so that we may assist you in finding the correct warranty for your product. Please include your name, the name on the order, the order number, and the SKU of the product to ensure the quickest and most accurate response to your inquiry.
Description
Description
Overview:
65-70 Pont 326-455 Long Tube Stainless
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.
Features:
- Natural stainless-steel finish offers superior resistance to rust and corrosion
- 3/8" thick 304 stainless machine flanges to prevent warping
- CNC 304 stainless mandrel bent tubes for an accurate fit and improved flow
- Precision formed long transition collectors and long tube design reduce backpressure and increase higher RPM horsepower
Specs:
- Brand: Doug's Headers
- Collector Attachment: 3-Bolt Flange
- Collector Diameter: 3.0 IN
- Collector Port Diameter: 3.0 IN
- Color: Silver
- Cylinder Head Port Shape: D-port
- Design: Full-length
- EGT Port: No
- Finish: 304 Stainless Steel
- Flange Thickness: 0.375 IN
- Gasket Or Seal Included: Yes
- Gaskets Included: Yes
- Grade Type: Performance
- Header Material: 304 Stainless Steel
- Header Style: Full-length
- Material: 304 Stainless Steel
- Mounting Hardware Included: Yes
- Oxygen Sensor Port: No
- Port Shape: D-port
- Primary Tube Outside Diameter: 1.75 IN
- Primary Tubing Diameter: 1.75 IN
- Prop 65 (C, R or CR): CR
- Prop 65 Yes/No: Yes
- Sheen Level: Satin
- Title: Doug's Long Tube Header 65-70 Pontiac 326-455 1 3/4" Primary 3" Collector 304 Stainless D521-SS
- Tube Wall Thickness: 16 GU
- Part Number: D521-SS
Applications:
- 1965-1966 Pontiac Bonneville 389 CID
- 1965-1966 Pontiac Bonneville 421 CID
- 1967-1968 Pontiac Bonneville 400 CID
- 1967-1968 Pontiac Bonneville 428 CID
- 1965-1966 Pontiac Catalina 389 CID
- 1965-1966 Pontiac Catalina 421 CID
- 1967-1968 Pontiac Catalina 400 CID
- 1967-1968 Pontiac Catalina 428 CID
- 1965-1966 Pontiac Grand Prix 389 CID
- 1965-1966 Pontiac Grand Prix 421 CID
- 1967-1968 Pontiac Grand Prix 400 CID
- 1967-1968 Pontiac Grand Prix 428 CID
Emissions:
- 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 Manufacturer's Application Guide and lnstallation Instructions.
Instructions:
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
