Doug's Headers D3373-B Replacement Header, 1-5/8 In, 02-07 Chevy Truck
- This item ships directly from the manufacturer. It may take an additional 2 business days for Dougs Headers to ship this item.
- This item ships via Ground Shipping only. Expedited and Air shipping options are not available.
Doug's 2/4 WD TRUCK HEADERS Long Tube Hi-Temp Black CoatedHeader development and design is complex and requires a substantial amount of time and resources to do the job right! Many manufacturers are unwilling to make the commitment and instead offer compromised headers at lower prices. Doug's will not compromise performance, quality or fit to compete with inferior designs at cheap prices. Every Doug's header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Doug's headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.
- 3/8" thick flanges... no warping
- CNC mandrel bent tubes... accurate fit & better flow
- Precision formed long transition collectors and long tube design... reduces backpressure and increases higher RPM horsepower
- Heavy 16 gauge tubing... longer life
- Tubes are pre-polished to remove scratches and the header isfinished with a Hi-Temp Black Coating
- Doug's Headers D3373-B 1 5/8" 4-Tube Manifold Replacement Header Chevrolet Truck 5.3L 02-07 Hi-Temp Black Coating
More Like This
Doug's Headers D3373 Replacement Header, 1-5/8 In, 02-07 Chevy Truck
Doug's Headers D3373-R Replacement Header, 1-5/8 In, 02-07 Chevy Truck
Doug's Headers D300Y-B Tri-Y Header, 1-5/8 In, 73-87 Chevy Truck, Blk
Doug's Headers D310-B Full Length Header 1-5/8 In, 73-87 Chevy Truck
Doug's Headers D371Y-B Tri-Y Header, 1-5/8 In, 67-72 Chevy Truck, Blk
Doug's Headers D372Y-B Tri-Y Header, 1-5/8 In, 67-72 Chevy Truck, Blk
Big Block Chevy Weld Up Header Kit, 2 In Primary, 3.5 In Collector
Speedway Flathead Ford V8 Center Dump Headers, Raw Finish
Fenton® Ford Flathead V8 Cast Iron Headers w/ Gaskets
Speedway Economy Ford Flathead V8 Exhaust Headers, Raw Finish
Q & A
Maintaining your headers is an important part of any hot rod. Pat gives some tips and demonstrates how well Purple Metal Polish works for keeping your headers looking great.
Our Tru-Ram Exhaust Manifolds are one of our most popular items. Tim provides more details about them and gives you a great look at them.
Tim gives a little bit of history on the Ford Y Block and shows some of the parts we have to offer.