Rebate
Rebate
|
#447D454
$722.42
/set
Factory Shipped
$802.69
Save $80.27
Quantity
Need Help? Call to Order
Add to a list
Select a vehicle to verify Fitment
Select Vehicle
Full-Length Header Tube Type, Standard Flange Style
Rebates Available
See rebate details| MFG. Part # | D454 |
| Header Tube Type | Full-Length |
| Flange Style | Standard |
| Primary Tube Diameter | 1-3/4" |
| Material Type | Steel |
Need help?
855.313.9176Quick and Easy Returns
Return PolicyDoug’s Headers D454 long-tube headers are built for early Mopar A-Body small-block swaps running an Alter-K-Tion aftermarket replacement K-member. The 1-3/4" primary, full-length 4-tube design is tuned for strong gains across the RPM range by improving scavenging and reducing backpressure—exactly what you want when you’re chasing horsepower and torque instead of fighting restrictions.
They’re constructed from heavy-duty 16-gauge steel with thick 3/8" machined flanges to help prevent warping and sealing issues over time. The metallic ceramic coating (silver) is applied after the tubes are pre-polished to help deliver a cleaner finish and improved heat management compared to bare steel. A V-band collector connection is used for a tight, leak-resistant seal, and the set includes reducers, plus the hardware and gaskets needed to install.
Application
These headers are intended for 1963–1966 Mopar A-Body small-block applications only when used with the Alter-K-Tion K-member and coil-over kit. If you’re running a Torqueflite 727, the setup can work, but you’ll need a mini starter for clearance.
Specs
Rebates
Black Friday Savings Are Here! From November 1 2026 through November 30 2026, save 10% on all Aeromotive and PerTronix products, including top performance brands like Doug's Headers, Taylor Cable, and JBA Performance Exhaust. Whether you're upgrading your fuel system, ignition components, headers, spark plug wires, or exhaust setup, this limited-time offer makes it easy to get premium performance parts at a great price. No coupon required, just shop qualifying Aeromotive and PerTronix brands and enjoy instant savings all month long.
All Doug's headers and exhaust products are guaranteed, to the original purchaser, to be free of defects in materials and workmanship for one year. This warranty covers the replacement or repair of the product only and does not cover the cost of removal and installation, customer applied aftermarket coatings or any other discoloration or corrosion of finished surfaces. Damage or product failure resulting from collision,improper installation, off-road use, road hazards, the use of exhaust insulting wrap or like products or rust occurring after installation, is not covered by the warranty. Should a part become defective it should be returned to the original selling retailer and must be accompanied with the original sales receipt. If there is no retailer in your area, call the factory for a return authorization and return your part prepaid to the factory for inspection. PerTronix reserves the right to replace or repair the alleged defective part and return the part freight collect.
For use on pre-1966 vehicles only
CA WARNING:
Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov
| KEY SPECS | |
|---|---|
| MFG. Part # | D454 |
| Brand | Doug's Headers |
| Header Tube Type | Full-Length |
| Flange Style | Standard |
| Primary Tube Diameter | 1-3/4" |
| Material Type | Steel |
| Color | Silver |
| Weld-Up | No |
| Finish | Ceramic Coated |
| Gasket(s) Included | Yes |
| Collector Reducers Included | Yes |
| Collector Reducer Exit Diameter | 3" |
| GENERAL | |
| Sold in Quantity | Set |
| Notes | This header requires the use of the Alterkation k-member and coil over kit for proper fitment. Applications with Torqueflite 727 transmissions will fit if a mini starter is used. |
Be the first to ask a question.
