Efficient filter media offers increased dirt-collecting capability and ability to capture more engine-harming particles, Advanced engine protection, Premium gasket included, Anti-drain back valve holds a reserve of oil in the filter to help protect the engine during start-ups, Built for both synthetic and conventional oils, Part Reference Numbers : 94025 S10250 X10250 CH11217 EF39170 L39170 WL10025, Kit Includes: 2x Engine Oil Filter, Kit Variations: K56-100442 K56-100455 K56-100468 K56-100494 K56-100507 K56-100520 K56-100533 K56-100546 K56-100559 K56-100572, Part Reference Numbers : 94025 S10250 X10250 CH11217 EF39170 L39170 WL10025