Iperformance Header Flange for 1999-2002 GM/Chevrolet Quad Four LD9 Twin Cam.
3/8 inch thick mild steel header flange. Perfect for building your own header or turbo manifold. These are the same flanges used in the Iperformance headers.
About This Product
- CAD computer designed.
- Waterjet cut.
- 3/8 inch thick Mild Steel.
- Exhaust ports measure 1.75 inches x 1.33 inches, and were intended to be used with 1 1/2 inch primary pipes, assembled by forming the end of the pipe to match the flange shape and sliding the pipe into the flange.
- This item has been wiped with a zinc-phosphate rust prevention solution, and should be grit blasted prior to welding to prevent odor and ensure good weld penetration.
Does this fit other cars or other engines?
We designed this flange specifically for use on the 1999-2002 Chevrolet Cavalier and Pontiac Sunfire with the Quad Four engine. We obtained a manifold from one of these vehicles for the pattern for our drawing. We do not have a cross reference list of other vehicles which use this same engine, please consult an expert on GM engines to confirm that this flange matches other applications.
The photo in this auction listing is a photo of the item and can be used for comparison to verify which engines this item fits.
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Wrapped and packed in a cardboard shipping box.
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