Details

• Brand:

  

  

• SKU:

  CM5Z-8C419-A

• Other Names:

  Pump Assembly, PW558

• Description:

  This is the genuine Ford engine auxiliary water pump, an electric coolant pump that circulates coolant through a secondary loop independent of the belt-driven mechanical water pump. On the 1.0L EcoBoost it keeps coolant moving through the turbocharger and heater circuit and continues running after the engine is switched off, carrying heat away from the turbo during thermal soak and supporting cabin heat and warm-up management. Ford lists this base under the catalog name Pump Assembly. It fits 2015-2018 Ford Focus equipped with the 1.0L EcoBoost engine. Drivers typically look for this pump when they hear no circulation after shutdown, experience turbo overheating concerns, get weak or inconsistent cabin heat, or store cooling-system or auxiliary-pump trouble codes that light the check engine lamp. An auxiliary pump that seizes, leaks, or fails electrically leaves the turbo and secondary loop without forced circulation, risking heat damage over time. This genuine electric pump restores correct secondary coolant flow and thermal protection. When installing, service and bleed the auxiliary coolant loop separately from the main engine cooling circuit, refill with the correct Ford-specification coolant, and clear any trapped air so the pump primes and circulates properly.

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