ACDelco Gold Engine Water Pump
Gold
Pack of 1

ACDelco Gold Engine Water Pump

GM Part #88926109

ACDelco Part #252-595

MSRP$132.28*

An ACDelco Professional, premium aftermarket Engine Water Pump circulates coolant through your vehicle's radiator and engine system to help maintain proper engine temperature and performance.

  • All Makes water pumps fit GM vehicles as well as a wide range of non-GM vehicles
  • Thoroughly tested for reliable, leak-free performance
  • Coated seals support seal longevity and durability

Pack of 1

About this product

An ACDelco Professional, premium aftermarket Engine Water Pump circulates coolant through your vehicle's radiator and engine system to help maintain proper engine temperature and performance. The gaskets, seals, and O-rings packaged with this Professional, premium aftermarket water pump help guarantee that all necessary parts are available for trouble-free installation. ACDelco Professional Water Pumps are a high quality replacement for many vehicles on the road today. This premium aftermarket replacement engine water pump is manufactured to meet your expectations for fit, form, and function.

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  • All Makes water pumps fit GM vehicles as well as a wide range of non-GM vehicles
  • Thoroughly tested for reliable, leak-free performance
  • Coated seals support seal longevity and durability
  • Heat-treated shaft assemblies provide superior strength and durability over non-treated assemblies
  • High-quality bearings are permanently sealed and lubricated for greater durability and long life
  • Come with premium, high-quality replacement components needed for trouble-free and accurate installation
  • Uniform wall sections and smooth coolant-flow cavities for efficient operation
  • Cast-iron or aluminum design, depending on vehicle application

Outlet Quantity2
ClassificationGold
Hub Height6.925 in / 175.76 mm
Mounting Hole Quantity4
Mounting Hardware IncludedNo
Pulley IncludedNo
Fan Clutch IncludedNo
Hub Hole Quantity4
Installation WarningsNo
Includes Back HousingNo
Impeller RotationStandard
Impeller MaterialSteel
Thermostat And Housing IncludedNo
Casting Number81-18308C
Water Pump Drive TypeTiming belt
Housing MaterialGrey Iron
Impeller Vane Quantity6

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 to Help Prevent Water Pump Failure:

  • 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.
  • Determine the root cause of failure, particularly if the water pump failed prematurely.
  • 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 water 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.
  • Flush your cooling system whenever the water pump or other system components are replaced. This will help prevent contamination from entering the system, which may result in repeated failure.
  • Utilize quality coolant when refilling your cooling system with the recommended 50/50 coolant/water mix. Distilled water should be used, as hard tap water can leave mineral deposits in the cooling system and reduce coolant flow, or result in corrosion and seal damage. Contaminated or depleted coolant can also result in corrosion and seal damage, and lead to pump failure. Take care to select the correct coolant for your vehicle by consulting the vehicle manufacturer's service information.
  • Never overtighten your drive belts. Belts that are too tight may cause an overload on pump bearings, greatly reducing the life of the water pump.
  • Inspect the fan blade. If damage is not detected, bent blades, loose rivets, and cracks may result in premature bearing failure. If damage is found, do not try to repair the fan-the part should be replaced.
  • Ensure that your engine fan pulley (or clutch, if used) is seated properly on the pump's shaft. If the fan wobbles during rotation, vibration resulting in premature bearing wear may occur. Also check the fan clutch for wear and replace as necessary.
  • Inspect the thermostat and radiator cap. Examine your thermostat and radiator cap, and replace if they show signs of sticking or leaking.

Troubleshooting Tips:

  • 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 pump failure, and should be addressed.

ModelBody StyleTrimYear(s)
C1500Base, High Sierra, Sierra Classic, Sierra Grande, Street Coupe1982, 1983, 1984, 1985, 1986
C1500 SuburbanBase, High Sierra, Sierra Classic, Sierra Grande1982, 1983, 1984, 1985, 1986
C2500Base, High Sierra, Sierra Classic, Sierra Grande1982, 1983, 1984, 1985, 1986
C2500 SuburbanBase, High Sierra, Sierra Classic, Sierra Grande1982, 1983, 1984, 1985, 1986
C3500Base, High Sierra, Sierra Classic, Sierra Grande1982, 1983, 1984, 1985, 1986

Frequently Asked Questions

Yes. ACDelco Professional Water Pump Kits and Water Pumps are for both GM and non-GM vehicle applications.

Yes. ACDelco Professional Water Pump Kits and Water Pumps are packaged with the gaskets, seals, and O-rings needed for installation.

No. Water pumps can vary greatly in size and appearance depending on the vehicle they are designed for.

Yes. The water pump is responsible for moving coolant through your vehicle's cooling system, keeping the heat generated by your engine at acceptable levels, and helping prevent overheating. A malfunctioning water pump can cause your engine to overheat, which may result in severe and costly engine damage.

Yes. As part of regular cooling system operation, the water pump sends hot coolant to the heater core of your engine, which transfers heat into the passenger cabin of your vehicle. If this hot coolant is unable to reach the heater core, then this heat transfer cannot occur, and your passenger compartment remains colder than you want.

No. Your vehicle's water pump keeps coolant moving as long as the engine is running, and stops when the engine is turned off. If you want to be able to circulate coolant for a short time after the engine has been turned off, an auxiliary electric water pump is needed.