Specifically designed to withstand the high concentrates of synthetic racing oils. Uniform pleated synthetic filter media provides high capacity and outstanding filtration. Large filter media provides high-flow rates and outstanding oil filtration. Protected by a heavy-duty canister and base plate, with a double-rolled seal. Check-valve/anti-drain back prevents oil drain-back and dry starts* Pre-lubed base gasket for optimum seal* 17mm hex nut allows easy-on, easy wrench-off* Pre-drilled for safety wire security* *where applicable.