HomeBelts and Cooling > Water Pump and Related ComponentsDorman 902-085 Engine Auxiliary Water Pump
Part #: 902-085

Dorman 902-085 Engine Auxiliary Water Pump

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⚙️ 7 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford, Lincoln, and Mercury, Fusion, MKZ, and Milan
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Reliable Engine Auxiliary Water Pump for Ford, Lincoln, and Mercury

The Dorman 902-085 engine auxiliary water pump is designed to maintain optimal coolant circulation in select Ford Fusion, Lincoln MKZ, and Mercury Milan models. Engineered with durable plastic and steel materials, this black auxiliary water pump supports efficient engine cooling and helps prevent overheating.

Key Features of the Dorman 902-085 Auxiliary Water Pump

  • Constructed with a combination of plastic and steel for durability
  • Black finish for corrosion resistance and long service life
  • Clockwise rotation to match OEM specifications
  • Includes 2 mounting holes with diameters of 0.37 and 0.55 inches for secure installation
  • Inlet and outlet pipe diameters of 0.57 inches for proper coolant flow
  • Depth of 4.7 inches to fit designated engine compartments
  • Does not include pulley, gasket, or shaft, allowing compatibility with existing components

Detailed Description of the Dorman 902-085 Auxiliary Water Pump

This engine auxiliary water pump is specifically designed for use in Ford Fusion, Lincoln MKZ, and Mercury Milan vehicles, ensuring compatibility and reliable performance. The pump’s plastic housing combined with steel components provides a balance of lightweight construction and strength. Its black color helps resist corrosion from coolant exposure. The pump operates with a clockwise rotation, matching the original equipment manufacturer’s design for seamless integration. With two mounting holes and precise inlet and outlet pipe diameters, the Dorman 902-085 facilitates straightforward installation and effective coolant circulation within the engine cooling system.

Common Applications and Issues Addressed

  • Restores proper coolant flow in Ford Fusion, Lincoln MKZ, and Mercury Milan engines
  • Replaces failing or noisy auxiliary water pumps
  • Prevents engine overheating caused by auxiliary pump malfunction
  • Eliminates coolant leaks due to worn or damaged pump components
  • Supports overall engine cooling system efficiency and longevity

Installation Notes and Tips

When installing the Dorman 902-085 auxiliary water pump, ensure the clockwise rotation aligns with the engine’s cooling system requirements. Verify that the mounting holes correspond to the vehicle’s mounting points for a secure fit. Since the pump does not include a pulley, gasket, or shaft, reuse existing components or source compatible parts as needed. Properly tighten mounting bolts to avoid leaks or vibration. It is recommended to inspect the cooling system hoses and clamps during installation to maintain optimal performance.

Quality Assurance and Warranty Information

Dorman manufactures the 902-085 auxiliary water pump to meet or exceed OEM standards for fit, form, and function. The combination of plastic and steel materials ensures durability under typical operating conditions. This part is backed by Dorman’s limited warranty, providing coverage against defects in material and workmanship for a specified period. Always refer to the warranty documentation for detailed terms and conditions.

BrandDorman
Part Number902-085
ColorBlack
Depth4.7
Extended Length0.57
Gasket Or Seal IncludedNo
Inlet Pipe Diameter0.57
MaterialPlastic
MaterialSteel
Mounting Hole Diameter0.37
Mounting Hole Diameter0.55
Mounting Hole Quantity2
Package Contents1 Auxiliary Water Pump
Pulley Flange Mount Hole Quantity0
Pulley IncludedNo
RotationClockwise
Shaft IncludedNo

This part fits 7 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2012FordFusionHybrid2.5LL4ELECTRIC/GASN/AInverter Cooler
2012LincolnMKZHybrid2.5LL4ELECTRIC/GASN/AInverter Cooler
2011FordFusionHybrid2.5LL4ELECTRIC/GASN/AInverter Cooler
2011LincolnMKZHybrid2.5LL4ELECTRIC/GASN/AInverter Cooler
2011MercuryMilanHybrid2.5LL4ELECTRIC/GASN/AInverter Cooler
2010FordFusionHybrid2.5LL4ELECTRIC/GASN/AInverter Cooler
2010MercuryMilanHybrid2.5LL4ELECTRIC/GASN/AInverter Cooler

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

5W1004890039E5Z8C419B

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.