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 : 94026 S10382 X10382 CH11277 EF21405 L21405 WL10026, Kit Includes: 6x Engine Oil Filter, Kit Variations: K56-100187 K56-100227 K56-100267 K56-100347 K56-100387 K56-100427 K56-100437 K56-100438 K56-100439 K56-100440, Part Reference Numbers : 94026 S10382 X10382 CH11277 EF21405 L21405 WL10026