WATER PUMP ASSEMBLY

The PAI 381802 Water Pump Assembly (available via Wofford Truck Parts) is engineered to provide top-tier performance and durability for heavy-duty diesel engines in the Caterpillar 3406E, C15, C16 and C18 series. According to product listings, it is a direct replacement for OEM part number 135-4925, and cross references include 0R4120, 0R8218, 0R8330/8331, 10R0483, 133-3569, 134-1342, 352-0212, 6I3890 among others.

Made of high-quality steel and precision-machined, this pump assembly meets or exceeds original equipment tolerances. It comes with gasket and O-ring seals for a lean installation with minimal leakage risk. The pump supports efficient coolant circulation through the engine block, maintaining optimal temperature under load. This helps avoid overheating, preserves coolant integrity, and sustains engine reliability in highway and heavy-haul service. As an aftermarket alternative from a reputable manufacturer, the 381802 offers cost-effective replacement without sacrificing quality. Before ordering, confirm your engine family (3406E, C15, etc.) and original OEM part number to ensure compatibility.