3.8 SC and 3.8 NA Upper Exhaust Flange

Part# FL1     $ 30.00 ea

Exact duplicate of the original GM  flange. Custom cut 3/8” material with machined gasket groove just like the original. Don’t settle for a flimsy, inferior, off the shelf, stamped flange. Remember that any leak ahead of the converter can set a check engine light.    WHY TAKE A CHANCE!   

Upper down pipe or converter assembly gasket

Part#  GT1     $ 13.00 ea

This is a Genuine GM  gasket that goes between the down pipe flange and  the exhaust manifold. No need to run to the dealership, just order one with your down pipe.

Lower down pipe or converter assembly gasket

Part#  GT2      $ 5.00 ea

This is the gasket that goes between the bottom of any of our complete down pipes and your factory cat-back system. True 2 1/2” will match up to both our down pipe and your cat-back.

Lower down pipe to converter assembly gasket

Part#  GT3     $ 6.50 ea

This is a Genuine GM  gasket that goes between the lower down pipe flange and  the Converter on the Bonnevilles. No need to run to the dealership for this one either, just order one with your down pipe.

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Last modified: April 19, 2006