AJPE/Proline 481x/SME SMX Mild Steel Header Flange

Precision laser cut form 3/8" thick steel, our header flanges are manufactured in the U.S. and are machine surfaced. These header flanges are compatible with the aftermarket Alan Johnson Performance Engineering/Proline Racing, and Steve Morris Engines SMX 481x cylinder heads.

We have these available in 2 1/4", 2 3/8", or 2 1/2" port sizes.

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.