18 LS430 − NEW FEATURES 5. Oil Pump The oil pump is coupled with the torque converter. It lubricates the planetary gear units and supplies operating pressure for hydraulic control. The material of the pump cover is aluminum to reduce weight. Pump Cover Driven Gear Pump Body Drive Gear Stator Shaft 232CH89 6. Oil Strainer A felt type oil strainer (in a plastic case) has been adopted because it weighs less, offers excellent debris capturing ability, and is more reliable. This oil strainer is maintenance-free. Valve Body Oil Level Plastic Case Felt Strainer Oil Pan 259LSK06