ACDelco® 252-1038 - Professional™ Engine Coolant Water Pump

8 reviews|Item # mpn4695860703
Vehicle Specific
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    Replaces Original (OE) Part #:19426512
    Manufacturer
    $107.81 + Free Shipping
    In Stock (27)
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    Vehicle Fitment

    Cadillac
    Chevy
    GMC

    Specifications

    Weight (lb)
    2.2 lb
    Length (in)
    2.65 in
    Hub Hole Quantity
    4
    Width (in)
    8.5 in
    Height (in)
    8.5 in
    Length (mm)
    67.32 mm
    Good Maintenance Practices - Section 1 - Bullet 4
    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.
    Good Maintenance Practices - Section 2 - Bullet 10
    After installation, pressure-test the system for leaks and check for sufficient fan blade clearance between the blade and radiator shroud.
    Features & Benefits - Bullet 1
    All Makes water pumps fit GM vehicles as well as a wide range of non-GM vehicles
    Product Description
    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. ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
    FAQ - Question 4
    Can a malfunctioning water pump harm my engine?
    FAQ - Question 1
    Can I use ACDelco Professional Water Pump Kits and Water Pumps on my non-GM vehicle?
    Features & Benefits - Bullet 8
    Cast-iron or aluminum design, depending on vehicle application
    Good Maintenance Practices - Section 1 - Bullet 1
    Clean all excess dirt and debris from the water pump housing.
    Good Maintenance Practices - Section 2 - Bullet 5
    Clean all sealing surfaces, and make sure all old gasket material is removed before installing your replacement component.
    Good Maintenance Practices - Section 2 - Bullet 2
    Clean and reinstall the coolant recovery reservoir before flushing the cooling system.
    Features & Benefits - Bullet 3
    Coated seals support seal longevity and durability
    Features & Benefits - Bullet 6
    Come with premium, high-quality replacement components needed for trouble-free and accurate installation
    Good Maintenance Practices - Section 2 - Bullet 1
    Determine the root cause of failure, particularly if the water pump failed prematurely.
    FAQ - Question 2
    Do ACDelco Professional Water Pump Kits and Water Pumps come with installation components?
    FAQ - Question 3
    Do all water pumps look the same?
    Good Maintenance Practices - Section 2 - Bullet 4
    Do not use any non-approved flush agents, and replace the coolant according to manufacturer's specifications.
    FAQ - Question 5
    Does the water pump affect the temperature inside the passenger compartment of my vehicle?
    FAQ - Question 6
    Does the water pump work when my vehicle is turned off?
    Good Maintenance Practices - Section 3 - Bullet 5
    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.
    Good Maintenance Practices - Section 2 - Bullet 3
    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.
    Good Maintenance Practices - Section 3 - Bullet 1
    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.
    Features & Benefits - Bullet 4
    Heat-treated shaft assemblies provide superior strength and durability over non-treated assemblies
    Features & Benefits - Bullet 5
    High-quality bearings are permanently sealed and lubricated for greater durability and long life
    Good Maintenance Practices - Section 1 - Bullet 3
    Inspect for leakage at the water pump outlet housing or the rear cover gasket, and leakage at the water pump vent or weep hole.
    Good Maintenance Practices - Section 2 - Bullet 11
    Inspect related components in the cooling system, including your fan blades, fan clutch, engine mounts, radiator, belts and hoses, and reservoir.
    Good Maintenance Practices - Section 3 - Bullet 4
    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.
    Good Maintenance Practices - Section 3 - Bullet 6
    Inspect the thermostat and radiator cap. Examine your thermostat and radiator cap, and replace if they show signs of sticking or leaking.
    Good Maintenance Practices - Section 3 - Bullet 3
    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.
    Good Maintenance Practices - Section 2 - Bullet 6
    Never strike the water pump shaft, since this will damage the new water pump.
    Thermostat And Housing Included
    No
    Pulley Included
    No
    Mounting Hardware Included
    No
    Fan Clutch Included
    No
    FAQ - Answer 3
    No. Water pumps can vary greatly in size and appearance depending on the vehicle they are designed for.
    FAQ - Answer 6
    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.
    Informational Chart 2
    PL25_PL26_IC_CoolingSystemOperation.jpg
    Informational Chart 1
    PL25_PL26_IC_WaterPumpComposition.jpg
    Good Maintenance Practices - Section 1 - Bullet 2
    Run your vehicle to increase engine temperature, and ensure the system is pressurized.
    Features & Benefits - Bullet 2
    Thoroughly tested for reliable, leak-free performance
    Good Maintenance Practices - Section 1 - Header
    Tips for Water Pump Inspection:
    Good Maintenance Practices - Section 2 - Header
    Tips for Water Pump Servicing & Installation:
    Good Maintenance Practices - Section 3 - Header
    Tips to Help Prevent Water Pump Failure:
    Good Maintenance Practices - Section 2 - Bullet 7
    Torque all bolts according to the manufacturer's specifications, and adjust belts to proper tension (if applicable) to manufacturer's specifications.
    Features & Benefits - Bullet 7
    Uniform wall sections and smooth coolant-flow cavities for efficient operation
    Good Maintenance Practices - Section 2 - Bullet 8
    Use sealant tabs only if recommended. Some sealant tabs or similar compounds may restrict coolant flow through the passages of some cooling systems.
    Good Maintenance Practices - Section 3 - Bullet 2
    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.
    Signs of Wear & Troubleshooting - Section 1 - Bullet 4
    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.
    Good Maintenance Practices - Section 2 - Bullet 9
    With the new water pump installed, turn the hub by hand and check for rotation.
    FAQ - Answer 1
    Yes. ACDelco Professional Water Pump Kits and Water Pumps are for both GM and non-GM vehicle applications.
    FAQ - Answer 2
    Yes. ACDelco Professional Water Pump Kits and Water Pumps are packaged with the gaskets, seals, and O-rings needed for installation.
    FAQ - Answer 5
    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.
    FAQ - Answer 4
    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.
    Housing Material
    Aluminum
    Hub Height
    1.807 in
    Impeller Material
    Plastic
    Impeller Rotation
    Standard
    Impeller Vane Quantity
    5
    Installation Warnings
    No
    Mounting Hole Quantity
    15
    Water Pump Drive Type
    Timing belt

    Features

    • 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 excellent 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

    Product Details

    Professional™ Engine Coolant Water Pump (252-1038) by ACDelco®. An ACDelco Professional™ Engine Water Pump Kit contains an ACDelco Professional™ Water Pump and the components needed to install it. This Professional™, premium aftermarket water pump will circulate coolant through your vehicle’s radiator and engine system, and help maintain proper engine temperature and performance.

    Installation

    ACDelco® - GM Water Pump InstallationACDelco® - GM Water Pump Installation

    The cooling system of your automobile is vital to your engine's overall health and longevity. That is why it’s critical to replace leaking, malfunctioning, cracked or otherwise damaged cooling parts and components in time. Without proper cooling, your engine can crack and seize up, which can lead to engine damage. To save your energy, time and money, get the superior OEM parts they offer for your vehicle. Each product is made from high quality materials to maintain proper cooling of your engine and prevent overheating.

    ACDelco is here with excellent products that are available at a competitive price. The company does its utmost to provide the best possible solutions for your needs. All products by ACDelco are made with expert care and created by professionals to meet all your requirements. The company does not accept compromises when it is going about quality, so you can be sure that all products have only first-rate quality. With many years of manufacturing experience, ACDelco is the name you can trust.

    Brand:
    Part Number:
    252-1038
    UPC:
    193468573053
    Alternate MPN:
    2521038
    OE Numbers:
    19426512

    Reviews

    (8)
    Only authorized customers can leave a review on our website. We would love to know what you like or dislike about the product. Share your opinion on product quality, appearance, installation, and other characteristics.
    /5
    1-8 of 8 Reviews
    5 of 5
    Great Product, Cost, Shipping, Installation
    I'm not a mechanic though I'm handy and have plenty of tools. After watching Atlantic British videos on YouTube I decided this is something I can do to stay in budget. After power washing oil off the area I spent the first day removing the fan clutch assembly which required a large narrow wrench (I chose to use a large crescent wrench) and removed the old water pump. Next I cleaned the area again with the power washer. Next day I installed the new pump with gasket noting which bolts came out of which position, then removed the protective plastic thread collar on water pump and reinstalled the old fan clutch assembly. The only frustration came trying to keep the gasket in place while positioning the new pump. Some gaskets come with a tacky side to stick to the pump or engine side and that makes it easier to keep it lined up. Future suggestion perhaps.
    Posted by Noel / April 12, 20242000 Land Rover Discovery
    3 of 5
    Water Pump
    I received water pump in a too large box, not packed to keep boxes from moving around. I have not installed water pump due to weather changed & too cold & wet.
    ACDelco® - Professional™ Engine Coolant Water Pump
    Posted by Todd (Toledo, OH) / November 15, 20191973 Buick Riviera
    4 of 5
    Quality Pump
    Arrived on time. Pretty easy to install on 08 Xterra with no issues.
    Posted by Terrance (Oklahoma City, OK) / April 06, 20182008 Nissan Xterra
    5 of 5
    Loved My Service.
    The part was in a padded box tightly secured and everything was perfect. It was a new part with all the seals included. It was very easy to install and is working like a champ. Now all my male friends come to me to get their parts online for the great prices and great quality parts.
    ACDelco® - Professional™ Engine Coolant Water Pump
    Posted by Pauline (New Orleans, LA) / October 17, 20172003 Kia Rio
    5 of 5
    Perfect Fit
    On time and fit perfect. Easy ordering.
    Posted by Rodney (Jonesboro, GA) / September 23, 20171994 Chevy S-10 Pickup
    5 of 5
    Purchased For My Boyfriend
    This was a replacement part as the original started to leak after 100k miles. It was fairly east to install ourselves and had no surprises that came along with it (wrong part or just didn't fit right).
    Posted by Theresa (Central Square, NY) / April 13, 20172002 Chevy Tahoe
    5 of 5
    Perfect Fit for My Silverado
    Purchased the recommended acdelco pump. No surprises during install, perfect fit. shipped fast. probably gonna order from them again.
    Posted by Brandon (Lincoln, NE) / February 10, 20252018 Chevy Silverado 1500
    5 of 5
    Water Pump
    Nice water pump and cost much less than local parts store! Works great!
    Posted by Lloyd (Atascadero, CA) / October 21, 2017

    Questions and Answers

    (0)
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!