Chrome steel outer cover cast from a 356 alloy heat treated to T6 specs, the S&S cover combines top quality chrome with a natural aluminum finish that matches S&S crankcases for a unique appearance. Cover provides superior cam and pinion shaft support to prolong engine life, and the baffled breather passage is designed to help reduce oil carryover in 1970-1992 models. Call 1-800-366-3464 for price.