RJC Racing has always in house manufactured header flanges for the Buick after market header companies. We are now offering some of these flanges direct to the public. Our flanges are made from 1/2" thick billet 1018 plate or 304 stainless depending on application. .Our high quality, high flow flanges makes Header/Down Pipe/ Test Pipe manufacture much easier for the do-it-yourselfer. We also offer highest quality header gaskets please see our gasket page.

Part# RJC-HHF (header head flange stock style heads 1/2" thick) $40ea
Part# RJC-HHF-S2 (header head flange stage 2 heads 1/2" thick) $40ea
Part# RJC-3THF (3 bolt turbo header flange 1/2" thick) $25ea.
Part# RJC-CATF-s (Catalytic converter flange 3/8" thick stock and 3" dia exhausts) $29ea.
Part# RJC-CATF-3.5 (Catalytic converter flange 3/8" thick 3.5" dia exhausts) $29ea
Part# RJC-CATF-4.0(Catalytic converter flange 3/8" thick 4" dia exhausts) $29ea
Part# RJC-DPF3(Down pipe flange with intrigal waste gate 3/4" thick all moving parts 304 SST) $129ea
Part# RJC-WGA(Intrigal waste gate assy. all moving parts 304 SST) $55ea
Part# RJC-DPF-EXWG(Externall waste gate flange 3/8" thick 304 SST) $55ea