Sonny's 5.3" Bore Space Semi-Hemi  Titanium Header Flange

Precision cut from 3/8" thick CP2 Titanium, our header flanges are manufactured in the U.S. and are machine surfaced. Designed to fit the Sonny's 5.3" bore space Semi-Hemi heads. These flanges are not compatible with other 5.3" bore space Chevy cylinder heads

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.

**All Titanium flanges are final sale. Not eligible for refunds or returns**