US Motor Works US4040 Engine Water Pump

Brand US Motor Works US4040
Fits Ford and Mercury · 86 vehicles

Engine water pump. Restores coolant circulation for dependable engine cooling.

Installation sealing devices. Included for a cleaner, more complete installation.

Cross-references Airtex Water Pumps AW4040, Dorman - HELP 42058 and E8FZ 8501-A for the same application. See all 4.

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Engine Water Pump for Ford Escort and Mercury Lynx

US Motor Works US4040 is an engine water pump for select Ford and Mercury compact cars. It is built for applications that need a direct-fit cooling system replacement and includes installation sealing devices for the pump-to-engine interface.

Key Features

  • Engine water pump for cooling system service
  • Includes installation sealing devices
  • Direct replacement for select Ford Escort, Mercury Lynx, and Mercury LN7 applications
  • Cross-references Airtex AW4040 and Dorman - HELP 42058 for the same application
  • Part number: US4040

Detailed Description

US Motor Works US4040 is an engine water pump for 1981-1990 Ford Escort, 1981-1987 Mercury Lynx, and 1982-1983 Mercury LN7 models. This pump is intended for cooling system repair where the original pump has worn bearings, leaking seals, or reduced coolant circulation. The included installation sealing devices help support a proper seal during replacement. For buyers searching for a Ford Escort water pump or Mercury Lynx water pump, US4040 provides a direct application match for these vehicles.

What It Helps Fix

  • Coolant leakage at the water pump housing
  • Overheating caused by poor coolant circulation
  • Noise from worn pump bearings
  • Cooling system service on aging Ford Escort and Mercury Lynx engines
  • Replacement of a failed pump on Mercury LN7 models

Installation Notes and Tips

Drain the cooling system before removal, clean the mounting surface thoroughly, and inspect the belt, hoses, and thermostat during service. Use the included sealing devices during installation and refill the system with the correct coolant mixture after assembly. Verify fitment by year, make, and model before ordering.

Quality Assurance

US Motor Works supplies replacement cooling components for automotive service applications. Part number US4040 is cataloged for the listed Ford and Mercury fitments and cross-references Airtex AW4040 and Dorman - HELP 42058 for the same application.

This part fits 86 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelPositionNotes
1990FordEscortPonyN/A
1990FordEscortLXN/A
1990FordEscortLX SportN/A
1990FordEscortGTN/A
1990FordEscortBaseN/A
1989FordEscortPonyN/A
1989FordEscortLXN/A
1989FordEscortGTN/A
1988FordEscortPonyN/A
1988FordEscortLXN/A
1988FordEscortGTN/A
1988FordEscortGLN/A
1987FordEscortPonyN/A
1987FordEscortGTN/A
1987FordEscortGLN/A
1987MercuryLynxXR3N/A
1987MercuryLynxLN/A
1987MercuryLynxGSN/A
1986FordEscortPonyN/A
1986FordEscortLXN/A
1986FordEscortLN/A
1986FordEscortGTN/A
1986FordEscortGLN/A
1986MercuryLynxXR3N/A
1986MercuryLynxLN/A
1986MercuryLynxGSN/A
1986MercuryLynxBaseN/A
1985FordEscortLN/A
1985FordEscortGLN/A
1985FordEscortBaseN/A
1985FordEscortLXN/A
1985FordEscortGTN/A
1985FordEscortGT TurboN/A
1985MercuryLynxXR3N/A
1985MercuryLynxLN/A
1985MercuryLynxGSN/A
1985MercuryLynxGLN/A
1985MercuryLynxBaseN/A
1984FordEscortLXN/A
1984FordEscortGTN/A
1984FordEscortGT TurboN/A
1984FordEscortGLN/A
1984FordEscortBaseN/A
1984MercuryLynxRSN/A
1984MercuryLynxLTSN/A
1984MercuryLynxLSN/A
1984MercuryLynxGSN/A
1984MercuryLynxGLN/A
1984MercuryLynxBaseN/A
1983FordEscortLXN/A
1983FordEscortGTN/A
1983FordEscortGLXN/A
1983FordEscortGLN/A
1983FordEscortBaseN/A
1983MercuryLN7SportN/A
1983MercuryLN7RSN/A
1983MercuryLN7Grand SportN/A
1983MercuryLN7BaseN/A
1983MercuryLynxRSN/A
1983MercuryLynxLTSN/A
1983MercuryLynxLSN/A
1983MercuryLynxGSN/A
1983MercuryLynxGLN/A
1983MercuryLynxBaseN/A
1982FordEscortLN/A
1982FordEscortGTN/A
1982FordEscortGLXN/A
1982FordEscortGLN/A
1982FordEscortBaseN/A
1982MercuryLN7BaseN/A
1982MercuryLynxRSN/A
1982MercuryLynxLSN/A
1982MercuryLynxLN/A
1982MercuryLynxGSN/A
1982MercuryLynxGLN/A
1982MercuryLynxBaseN/A
1981FordEscortSSN/A
1981FordEscortLN/A
1981FordEscortGLXN/A
1981FordEscortGLN/A
1981FordEscortBaseN/A
1981MercuryLynxRSN/A
1981MercuryLynxLSN/A
1981MercuryLynxGSN/A
1981MercuryLynxGLN/A
1981MercuryLynxBaseN/A
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Airtex Water Pumps — AW4040Dorman - HELP — 42058E8FZ 8501-AWP-566