US Motor Works US4078 Engine Water Pump

Engine Water Pump for Mazda and Ford Applications

US Motor Works US4078 is an engine water pump for select Mazda and Ford vehicles. It is built for direct replacement service and includes installation sealing devices to support a proper coolant seal during replacement.

• Engine water pump for cooling system service
• Includes installation sealing devices
• Direct-fit replacement for select Mazda and Ford applications
• Cross-reference: Airtex AW4078
• Cross-reference: Dorman - HELP 42135

Fitment Coverage

• Fits 1999-2003 Mazda Protege, N/A
• Fits 2002-2003 Mazda Protege5, N/A
• Fits 1993-2002 Mazda 626, N/A
• Fits 1993-1997 Ford Probe, N/A
• Fits 1993-1997 Mazda MX-6, N/A

What This Water Pump Helps Address

• Coolant circulation problems caused by a worn pump
• Overheating from reduced water pump performance
• Coolant leaks at the pump mounting surface
• Noisy operation from a failing pump bearing or impeller assembly
• Cooling system service on Mazda Protege, Mazda 626, Ford Probe, and Mazda MX-6 models

Installation Notes and Tips

Verify engine application before installation and inspect the cooling system, gasket surfaces, and drive components during service. Replace worn sealing surfaces as needed and follow the vehicle manufacturer’s coolant fill and bleed procedure after installation. For search relevance, this US Motor Works US4078 water pump is commonly selected for Mazda Protege and Mazda 626 cooling system repairs.

Quality Assurance

US Motor Works supplies replacement cooling components for automotive service applications. The US4078 is identified as an engine water pump with installation sealing devices included for the repair process.