Nissan 21305-4W002 Cooler Assembly - Oil

You can Select Your Vehicle to check if 21305-4W002 fits your vehicle.

The oil cooler of engines with automatic transmissions is connected to an adapter on the front part of the oil pan near the oil filter. It also contains the oil pressure sending unit and it has got a pressure relief valve for oil. The engine has got two hoses that are used to connect the cooler: one is used as an inlet side while another one serves as an outlet side. The radiator coolant is what helps in reducing temperature of oil by using an oil cooler. To replace the oil cooler, drain the engine oil and cooling system, detach the hoses, remove the oil pressure sending unit, and loosen the retaining bolt to remove the oil cooler and O-rings. If necessary, separate this oil cooler adapter from its upper aluminum section of this same kind of pan. Then clean these mating surfaces, attach new gasket and then fix on top of that adapter again. The O-rings need to be lubricated before fitting it on top of that casting protusion while aligning those tabs over this cooler's body so as to fit into this adapter' s casting protusions. Next tighten the retaining bolt onto specified torque value, install hoses and check for leakage after running engine. Lastly check levels of coolant and oils adding those where necessary.