Continental 4-Bolt Stainless Header Flange

Precision laser cut from 1/4" thick 304 Stainless Steel, our header flanges are manufactured in the U.S. and are machine surfaced. These header flanges are specifically made for Continental opposed-piston engines with a 4-bolt style exhaust flange. This fits many versions of the 6 cylinder Continental engines, such as O-470-B/-D/-G/-K/-L/-M/-P/-R/-S/-U/-V, IO-470-D/-U/-V. TSIO-470-B, and TSIO-520.

These flanges will NOT fit the 2-bolt exhaust engines, including A-65, A-75, C-85, C-90, E-185, E-165, E-225, O-200-A, O-200-B, O-300-A/-C/-D, O-470-A/-E/-J engines.

These flanges are 1/4" thick, and have 1.75" exhaust port size.

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 or in sets of 6.

These are for automotive, marine, off-road, or racing use only. These are NOT approved for certified aircraft applications.