Canister style filter fits generator models Emerald Advantage gasoline, HGJAC and LP Vapor/HGJAC, Marquis Gold Gasoline/HGJAB and LP/HGJAB, Marquis Platinum EFI/HGJAA and LP/HGJAA. It does not include an anti drain back valve. It features valves that allow oil to bypass the oil filter during cold starts, or if the filter becomes plugged.