The most universal header just got better! Now made of durable stainless steel, these tight-fit headers feature a heavy duty 3/8" flange. Includes gaskets, reducers and hardware. 1-5/8" primary tubes and 2-1/2" collector. S/B Chevy.
The header flange bolts that come with this kit are 3/8” hex head. The bolt size is 3/8” and the wrench size is also 3/8”.
Bolts, gaskets and stainless steel reducers are in the box. Reducers are 2" O.D. at the outlet end.
Use the dimensions below with the following chart:
Stainless Steel Tight-Fit Header Chart
- A = 4"
B = 10"
- 1-5/8" primary tubes
- 2-1/2” collectors
- 3/8” thick flanges
The ports are a tall oval so they will fit a variety of heads.
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