Details

• Brand:

  

  

• SKU:

  ML3Z-18D473-J

• Other Names:

  Engine Auxiliary Water Pump, Pump Assembly

• Description:

  Auxiliary water pump (engine auxiliary water pump) for 21-25 Ford F-150 Lariat, XL, and XLT trim trucks equipped with the 2.7L EcoBoost engine. This is the electric coolant pump that supplements coolant circulation in specific operating conditions, providing supplemental flow to the heater core, the turbocharger cooling circuits, or the after-run cooling cycle depending on the cooling system architecture. The pump operates under control of the powertrain control module and runs independently of the engine-driven main water pump. Replacement scenarios include pump failure indicated by a stored fault code, the heater failing to deliver heat at idle or during electric-only operation, audible whining or grinding from the pump location, or coolant loss localized to the pump body indicating internal seal failure. Installation requires partial coolant system drain to a level below the pump connections, then the coolant hoses are disconnected from the pump inlet and outlet, the electrical connector is released, and the pump is unbolted from its mounting bracket. The new pump installs in reverse, and the cooling system must be refilled and bled per the Ford procedure. After installation, the pump operation should be verified through the appropriate diagnostic procedure or by activating the heater at idle to confirm flow. Verify your truck has the 2.7L EcoBoost engine before ordering this specific variant; other engines use different pump part numbers.

• Applications: 2.7L.
• Replaces:

  ML3Z18D473B

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