Dorman 902-066 Engine Auxiliary Water Pump

Reliable Engine Auxiliary Water Pump for Mercedes-Benz Models

The Dorman 902-066 engine auxiliary water pump is designed to support the cooling system of select Mercedes-Benz vehicles. Engineered with durable materials and precise specifications, this pump helps maintain optimal engine temperature and performance.

• Constructed from plastic, rubber, and steel components for durability
• Black color finish for corrosion resistance
• Clockwise rotation to match OEM specifications
• Inlet pipe diameters of 0.22 and 0.52 inches, outlet pipe diameter of 0.51 inches
• Depth of 6.7 inches for proper fitment
• Does not include pulley, gasket, or shaft
• Compatible with multiple Mercedes-Benz models including C36 AMG, C43 AMG, C220, C230, C280, CLK55 AMG, CLK320, CLK430, E55 AMG, E300, E320, E420, and E430

Product Details and Specifications

The Dorman 902-066 auxiliary water pump is manufactured using a combination of plastic, rubber, and steel materials to ensure reliable operation within the engine cooling system. Its black finish provides resistance against corrosion and wear. The pump features a clockwise rotation, aligning with the original equipment manufacturer (OEM) design for seamless integration. The inlet and outlet pipe diameters are precisely sized at 0.22, 0.52, and 0.51 inches respectively, ensuring proper coolant flow. With a depth of 6.7 inches, this pump fits securely in the designated engine compartment area without requiring additional mounting hardware. Note that this unit does not include a pulley, gasket, or shaft, so those components must be sourced separately if needed.

Compatible Mercedes-Benz Models

This auxiliary water pump is compatible with a range of Mercedes-Benz vehicles, including performance and luxury models such as the C36 AMG, C43 AMG, C220, C230, C280, CLK55 AMG, CLK320, CLK430, E55 AMG, E300, E320, E420, and E430. It is designed to meet the specific cooling requirements of these models, ensuring consistent engine temperature regulation and preventing overheating.

Common Issues Addressed by the Auxiliary Water Pump

• Engine overheating due to insufficient coolant circulation
• Reduced heater performance inside the cabin
• Coolant leaks or pump failure causing engine damage
• Irregular engine temperature fluctuations
• Noise or vibration from a failing auxiliary water pump

Installation Notes and Tips

When installing the Dorman 902-066 auxiliary water pump, ensure the vehicle is cooled down and the cooling system is depressurized. Verify the pump’s rotation direction matches the original unit. Since this pump does not include a pulley or gasket, reuse existing components if they are in good condition or replace them as necessary. Properly secure all connections to prevent leaks and verify coolant flow after installation. Consult the vehicle’s service manual for torque specifications and detailed installation procedures.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The 902-066 auxiliary water pump undergoes quality inspections to ensure fit, form, and function. Please refer to Dorman’s warranty policy for specific coverage details.