Patented Leak-Free Flange

Patented Leak-Free Flange!


Sanderson's  Patented Leak-Free Flange

We offer the only patented leak-free flange on the market. Our design is so unique that no gaskets are required!

We start with a 3/8" thick steel plate, which has been precision laser cut to exacting specifications using our own template designs. After assembly, a weld bead is built up around each exhaust port and all bolt holes. This bead is ground to uniform thickness with such accuracy that instead of a gasket, all that is required to seal the header to the engine is a bead of Permatex® Ultra Black® gasket maker silicone.

Just keep the bolts snug and your experience with warped flanges and blown gaskets are over for good!


Sanderson Headers
517 Railroad Ave.
South San Francisco, CA 94080

Phone:    (650) 583-6617
Fax:        (650) 583-8475