Dorman 300-932 Engine Water Pump Pulley

Engine Water Pump Pulley Replacement

Restore proper accessory drive operation with this Dorman engine water pump pulley, part number 300-932. It is a direct replacement for the original pulley on select Buick, Chevrolet, Oldsmobile, and Pontiac applications, including 1987-1992 Buick Century and 1990-1992 Chevrolet Lumina.

Key Features

• Direct replacement engine water pump pulley for specific vehicle applications
• Standard replacement grade for OE-style fit and function
• Steel construction with black finish
• Serpentine pulley design with bolt-on attachment
• 0 groove quantity, 4.528 in. diameter, 1.96 in. width, and 1.969 in. depth
• Single bolt hole design with 0.743 in. bolt hole diameter
• Part number 300-932 for easy identification

Detailed Description

Dorman 300-932 is an engine water pump pulley built as a standard replacement for the original part on select GM vehicles. The steel construction and bolt-on mounting help restore the pulley’s original function in the serpentine belt drive system, supporting proper water pump operation on applications such as 1987-1992 Buick Century, 1990-1992 Chevrolet Lumina, 1987-1992 Oldsmobile Cutlass Ciera, 1987-1991 Pontiac 6000, and 1987-1990 Chevrolet Celebrity. This part cross-references 10112468 for the same application.

What It Helps Address

• Damaged or worn water pump pulley surfaces
• Belt tracking issues related to pulley wear
• Noise from a pulley that is no longer running true
• Loss of proper serpentine belt drive alignment
• Replacement needs after pulley corrosion or physical damage

Installation Notes and Tips

Verify pulley diameter, bolt hole diameter, and serpentine belt routing before installation. Confirm vehicle year, make, and model match the listed fitment exactly, including 1987-1992 Buick Century and 1990-1992 Chevrolet Lumina applications. Inspect the belt, water pump, and adjacent pulleys for wear before reassembly. Part number 300-932 should be matched to the original pulley style and mounting configuration.

Quality Assurance

Dorman supplies this pulley as a direct-fit replacement component for specific OE applications. The part is built from steel and finished in black for standard replacement use in the engine cooling and belt drive system.