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 : 84314 S5526 X5526 CH9549 EF45515 LF558 L45515 L45526 57311 57312 WL10111, Kit Includes: 6x Engine Oil Filter, Kit Variations: K56-100019 K56-100058 K56-100097 K56-100120 K56-100170 K56-100210 K56-100250 K56-100330 K56-100370 K56-100410, Part Reference Numbers : 84314 S5526 X5526 CH9549 EF45515 LF558 L45515 L45526 57311 57312 WL10111