Sierra 18-7897 4 Cycle Outboard Oil Filter for Johnson, Evinrude Sierra high-quality replacement oil filter for JohnsonEvinrude Outboards and Suzuki Outboards. Anti-Drain-Back Valve Engineered with premium grade materials that will excel in the extreme marine environment Epoxy coated for corrosion resistance Heavy-wall steel canister for further corrosion protection High-efficiency filter media that meets or exceeds the OEs filtration Backed by Sierras industry leading warranty Thread Spec 34 x