Key Features: •Anti-Drain-Back Valve •Engineered with premium grade materials that will excel in the extreme marine environment •All canisters are epoxy coated for corrosion resistance •Heavy-wall steel canister for further corrosion protection •High-efficiency filter media that meets or exceeds the OE's filtration •Backed by Sierra's industry leading warranty Additional Details: •Thread Spec: 3/4" x 16 or 19.1mm x 406.4mm NPT Replaces: 16510-61A20-MHL 16510-9J00