GM Genuine Parts Engine Water Pump Kit
OE
Pack of 1

GM Genuine Parts Engine Water Pump Kit

GM Part #25201452

ACDelco Part #251-780

MSRP$467.17*

GM Genuine Parts Engine Water Pumps are designed, engineered, and tested to rigorous standards, and are backed by General Motors.

  • Delivers consistent cooling for peace of mind on the road
  • Maintains proper operating temperatures by moving fluid continuously
  • Provides necessary cooling capacity when towing heavy loads

Pack of 1

About this product

GM Genuine Parts Engine Water Pumps are designed, engineered, and tested to rigorous standards, and are backed by General Motors. When your temperature gauge starts creeping up, you spot coolant on the driveway, or you hear a whining noise near the front pulley, a worn water pump is often the culprit. These engine water pumps are driven by the serpentine belt to circulate coolant through the engine block and radiator, working with the thermostat to keep operating temperatures steady in stop-and-go traffic, long highway commutes, and hot summer conditions. By moving fluid continuously, they help prevent sudden overheating, reduce heat-soak stress when towing heavier loads, and protect the engine from costly heat damage that can leave you stranded. Built with durable sealing surfaces and bearing support for smooth rotation, it's designed and validated for leak-resistant, consistent cooling performance you can count on day after day. GM Genuine Parts are the true OE parts installed during the production or validated by General Motors for GM vehicles.

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

  • Delivers consistent cooling for peace of mind on the road
  • Maintains proper operating temperatures by moving fluid continuously
  • Provides necessary cooling capacity when towing heavy loads
  • Driven by the serpentine belt to keep the cooling system active
  • Protects your engine from costly heat damage
  • An essential link in the vehicle thermal management network
  • Thoroughly tested for leak-resistant performance
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type

Outlet Quantity1
Mounting Hardware IncludedYes
Mounting Hole Quantity3
Gasket Or Seal IncludedYes
Housing MaterialAluminum
ClassificationOE
Fan Clutch IncludedNo
Includes Back HousingYes
Water Pump Drive TypeSerpentine Belt
Impeller Vane Quantity6
Installation WarningsNo
Thermostat And Housing IncludedYes
Pulley Groove Quantity5
Pulley IncludedYes
Casting NumberX-##
Hub Height3.48 in / 88.48 mm
Outside Pulley Diameter4.54 in / 115.33 mm
Impeller RotationStandard

24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

Tips for Water Pump Servicing & Installation:

  • Clean all excess dirt and debris from the water pump housing.
  • Run your vehicle to increase engine temperature, and ensure the system is pressurized.
  • Inspect for leakage at the water pump outlet housing or the rear cover gasket, and leakage at the water pump vent or weep hole.
  • A stain around the weep hole is acceptable. However, if a weep occurs with the engine running and the coolant system pressurized, then the water pump should be replaced.
  • Clean and reinstall the coolant recovery reservoir before flushing the cooling system.
  • Flush the cooling system completely, using power flush equipment or thermal cycling the system with clean water three times. The most effective method of system flushing is to use a coolant exchanger, following the manufacturer's operating instructions.
  • Do not use any non-approved flush agents and replace the coolant according to manufacturer's specifications.
  • Clean all sealing surfaces, and make sure all old gasket material is removed before installing your replacement component.
  • Never strike the water pump shaft, since this will damage the new water pump.
  • Torque all bolts according to the manufacturer's specifications and adjust belts to proper tension (if applicable) to manufacturer's specifications.
  • Use sealant tabs only if recommended. Some sealant tabs or similar compounds may restrict coolant flow through the passages of some cooling systems.
  • With the new pump installed, turn the hub by hand and check for rotation.
  • After installation, pressure-test the system for leaks and check for sufficient fan blade clearance between the blade and radiator shroud.
  • Inspect related components in the cooling system, including your fan blades, fan clutch, engine mounts, radiator, belts and hoses, and reservoir.

Signs of wear for engine water pump seals include but are not limited to:

  • Leaking Coolant - Puddles of coolant under your vehicle, a constant drip or stream of coolant from the water pump's weep hole, or a constantly empty or low coolant reservoir are all signs of potential water pump wear, and may be caused by cracks in the pump, or seal or gasket failures.
  • Engine Overheating - If your vehicle's engine overheats, it may not be receiving the required coolant flow. Make sure that your vehicle's cooling system contains the proper level of coolant.
  • Rumbling Noise in the Pump - A rumbling, squeaking, or screeching noise near the front of your vehicle when you start it may indicate a malfunctioning water pump bearing.
  • Visible Component Wear - Worn seals, corrosion, cavitation/pitting of pump components, or a loose or wobbly pump shaft are all signs of wear that may lead to water pump failure and should be addressed.

ModelBody StyleTrimYear(s)
CanyonBase, SL, SLE2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022