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 : 84050 S6127 S6127A X6127 X6127A CH10855 L26127 57050 WL10164, Kit Includes: 12x Engine Oil Filter, Kit Variations: K56-100031 K56-100070 K56-100109 K56-100149 K56-100195 K56-100235 K56-100315 K56-100355 K56-100395 K56-100435, Part Reference Numbers : 84050 S6127 S6127A X6127 X6127A CH10855 L26127 57050 WL10164