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 : 85223 S5247 X5247 CH8081 EF25247 L482 L25247 51223, Kit Includes: 12x Engine Oil Filter, Kit Variations: K56-100027 K56-100066 K56-100105 K56-100137 K56-100191 K56-100231 K56-100311 K56-100351 K56-100391 K56-100431, Part Reference Numbers : 85223 S5247 X5247 CH8081 EF25247 L482 L25247 51223