Dorman 902-076 Engine Auxiliary Water Pump

Overview of Dorman Engine Auxiliary Water Pump 902-076

The Dorman 902-076 engine auxiliary water pump is designed to support the cooling system of select BMW models. Engineered with durable plastic, rubber, and steel components, this black auxiliary water pump ensures reliable coolant circulation for optimal engine performance.

• Constructed from plastic, rubber, and steel materials for durability
• Black finish for corrosion resistance
• Single mounting hole with 0.35-inch diameter for secure installation
• Inlet pipe diameter of 0.64 inches and outlet pipe diameter of 0.63 inches
• Clockwise rotation to match OEM specifications
• Depth of 4.7 inches for proper fitment
• Does not include pulley, gasket, or shaft
• Package contains one auxiliary water pump

Detailed Product Description

The Dorman 902-076 auxiliary water pump is specifically designed for BMW vehicles including the 525i, 530i, 545i, 550i, 645Ci, and 650i models. This pump plays a critical role in maintaining engine temperature by circulating coolant through the auxiliary cooling system. Its construction combines plastic for the housing, rubber for seals, and steel for internal components, providing a balance of strength and resistance to wear. The pump’s black color helps resist corrosion and blends with the engine bay components. With a single mounting hole and precise inlet and outlet pipe diameters, the pump is engineered for a secure and exact fit. The clockwise rotation matches the original equipment manufacturer’s design, ensuring compatibility and proper operation.

Common Applications and Issues Addressed

• Replaces failing or noisy auxiliary water pumps in BMW 525i, 530i, 545i, 550i, 645Ci, and 650i
• Resolves coolant circulation problems that can lead to engine overheating
• Addresses leaks or cracks in the auxiliary pump housing
• Eliminates reduced coolant flow caused by worn internal components
• Prevents engine performance issues related to inadequate cooling

Installation Notes and Tips

• Ensure the vehicle is cool before beginning installation to avoid injury
• Verify the clockwise rotation matches the existing pump before removal
• Check mounting hole alignment and pipe diameters for proper fit
• Replace any worn hoses or clamps during installation for optimal sealing
• Bleed the cooling system after installation to remove air pockets

Quality Assurance and Warranty

Dorman manufactures the 902-076 auxiliary water pump to meet or exceed OEM standards for fit, form, and function. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. This ensures that the pump provides reliable service when installed according to manufacturer guidelines.