Offenhauser 3921S Oldsmobile Water Crossover Spacer, Pair
$74.00Offenhauser 3921S Oldsmobile Water Crossover SPACER ONLY 1957-’58. Sold in a pair. For use with Offenhauser part #3920. Allows 3920 to fit with Oldsmobile 371 CID engines. 1/4″ spacers should be installed between the crossover and the manifold. Gasket not provided.