Caterpillar part numbers starting 4W4

4W4054	Elbow (oil lines, engine)	Caterpillar
4W4481	Tube (valve cover & breather)	Caterpillar
4W4794	Regulator (thermostats)	Caterpillar
4W4922	Housing assembly (housing, flywheel)	Caterpillar

Not listed? Add it yourself.