
The Water Pump Assembly #381801 / 3520203 is a high-quality, direct-fit replacement designed for Caterpillar 3406A, 3406B, 3406C series diesel engines. Built for reliability, this new water pump helps maintain optimal cooling and engine longevity in heavy-duty applications.
Includes cover gasket and o-ring kit for a secure, leak-free installation; mounts directly and precisely to CAT engine blocks. The oil pumps we manufacture are precision laser measured in a 3D environment to ensure exact fitment.
Why Shop with Young & Sons?
With over 75 years of diesel engine expertise, Young & Sons offers quality and fast availability for all your engine needs.