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 : 94033 S10430 X10430 CH11934 EF18179 LF733 L18179 WL10033, Kit Includes: 2x Engine Oil Filter, Kit Variations: K56-100051 K56-100090 K56-100154 K56-100192 K56-100232 K56-100272 K56-100312 K56-100352 K56-100392 K56-100432, Part Reference Numbers : 94033 S10430 X10430 CH11934 EF18179 LF733 L18179 WL10033