Sierra 18-7909 Honda Oil Filter Sierra high-quality canister fuel filters are designed to meet or exceed OEM specifications. Thread Spec 20mm x 1.5 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 Interchangeable with Honda Ou