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

This is a BERNARD MONDELLO neoprene rear main seal for (260-307-330-350-403) S/B Oldsmobile engines. This rear main seal is hard to find for the small block Olds.

Item comes as a set.

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

MADE IN THE U.S.A.