Doug's Headers

Engine Swap Headers

Designed for Tight Spaces

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The Original Doug's Headers

Doug's Engine Swap Headers are designed to fit with many aftermarket engine swap kits. Our Headers are designed for the horsepower and torque increases produced by these modern engines while properly fitting the tightest engine swap applications.  



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Product Highlights

Anatomy of a Doug's Header

Header development and design is complex and requires a substantial amount of time and resources to ensure the job is done right. Many manufacturers are unwilling to make the commitment and instead offer lower quality headers at cheap prices. Doug's does not compromise performance, quality or fit to compete with those inferior designs. Each Doug's Header is designed with the proper tube size and length to efficiently scavenge the exhaust from each cylinder, reducing pumping losses resulting in maximum increases in horsepower and torque.

Engine Swap Headers

Doug's Engine Swap Headers are designed to fit with many aftermarket engine swap kits. Our Headers are designed for horsepower and torque increases with these modern engines while properly fitting the tightest engine swap applications.

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What's Included in a set of Doug's Headers

Doug's headers are carefully developed on the vehicles they are intended to fit and are subject to rigorous quality checks during the design and manufacturing process. We pride ourselves on fitment and every Doug's Header comes with all the necessary mounting hardware, collector reducers, premium gaskets and detailed installation instruction sheets. Should you hit a speed bump our qualified techs are just a phone call away.

Tech Resources

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Our qualified team is always here to answer your questions at 909-599-5955

Doug's Headers Catalog

Full color catalog with part number reference

Understanding Emissions

Know Your Code