Stainless Header Flange for Sonny's Racing Engines 5.0" Bore Space Semi-Hemi Heads

Precision laser cut from 3/8" thick 304 Stainless Steel, our header flanges are manufactured in the U.S. and are machine surfaced. These header flanges are specifically made for 5.0" Bore space Sonny's Semi-Hemi Heads.

Port Size: 2 1/2" or 2 3/4" Available

We carry over 450 different header flange designs, so if you don't see the flange you're looking for, talk with one our tech reps about custom header flange cutting.

Flanges sold separately.