Sierra 18-7896 Oil Filter 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 16 or 19.1mm x 406.4mm NPT Interchangeable with EMP 35-35152 JohnsonEvinrude Outboard 5033539 778886 Mallory 9-57814 Suzuki Outboard 1