Dorman 902-074 Engine Auxiliary Water Pump - Rear

Reliable Engine Auxiliary Water Pump for Mercedes-Benz ML Series

The Dorman 902-074 engine auxiliary water pump is designed to maintain optimal coolant circulation in select Mercedes-Benz ML models. Engineered with durable plastic and rubber materials, this black auxiliary water pump supports efficient engine cooling and helps prevent overheating.

• Constructed from high-quality plastic and rubber components for durability
• Compatible with Mercedes-Benz ML55 AMG, ML320, ML350, ML430, and ML500 models
• Clockwise rotation ensures proper coolant flow
• Inlet pipe diameter: 0.53 inches; outlet pipe diameter: 0.5 inches
• Depth of 6.25 inches for precise fitment
• Does not include pulley, gasket, or shaft

Product Details and Specifications

The Dorman 902-074 auxiliary water pump is designed specifically for Mercedes-Benz ML series vehicles, including the ML55 AMG, ML320, ML350, ML430, and ML500. Its black plastic housing combined with rubber components provides resistance to heat and wear, ensuring consistent performance. The pump operates with a clockwise rotation, matching the OEM specifications for these models. With inlet and outlet pipe diameters of 0.53 and 0.5 inches respectively, it integrates seamlessly into the engine cooling system. This pump does not come with a pulley, gasket, or shaft, so those components must be sourced separately if needed.

Common Applications and Problem Resolution

• Restores proper coolant circulation in the auxiliary cooling circuit
• Addresses engine overheating issues related to auxiliary pump failure
• Eliminates coolant leaks caused by worn or damaged pump components
• Prevents engine damage due to insufficient coolant flow
• Replaces faulty or noisy auxiliary water pumps in Mercedes-Benz ML models

Installation Notes and Tips

Installation of the Dorman 902-074 auxiliary water pump requires basic mechanical skills and appropriate tools. Ensure the engine is cool before beginning work. Verify that the pump’s inlet and outlet pipe diameters match the vehicle’s cooling system connections. Since the pump does not include a pulley or gasket, inspect existing components for wear and replace as necessary. Properly torque mounting hardware to manufacturer specifications to avoid leaks or misalignment.

Quality Assurance and Warranty Information

Dorman manufactures this auxiliary water pump to meet or exceed OEM standards for fit, form, and function. The use of durable plastic and rubber materials contributes to long service life under normal operating conditions. This product is backed by Dorman’s limited warranty, providing coverage against defects in material and workmanship. Refer to Dorman’s warranty policy for specific terms and conditions.