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 : 84173 S5609 X5609 CH10158 L25609 57173, Kit Includes: 4x Engine Oil Filter, Kit Variations: K56-100022 K56-100061 K56-100148 K56-100176 K56-100216 K56-100256 K56-100296 K56-100336 K56-100376 K56-100416, Part Reference Numbers : 84173 S5609 X5609 CH10158 L25609 57173