Throw away your rope seal and seal your engine with the latest technology!

This is a Bernard Mondello Viton performance/racing high temperature rear main seal for (400-425-455) B/B Oldsmobile engines and 350 DIESEL engines. This rear main seal is hard to find for the big block AND 350 DIESEL Olds engines.

Item comes as a set.

This is the finest rear main seal you can use for your big block performance/racing Oldsmobile engine. Compare at $39.00-$43.00 elsewhere.

Note: rear of crankshaft must be polished in the seal area for best results.

MADE IN THE U.S.A.