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ACDelco 252-946 - Engine Water Pump - Timing Belt, Reverse, 4 Mount Holes, without Pulley
$6699
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ACDELCO part description
Professional™ Engine Coolant Water Pump
Product Description
Engine Water Pump
Product Attributes
| Outlet Quantity | 1 |
| Hub Height | 3.866 IN |
| Mounting Hole Quantity | 4 |
| Hub Hole Quantity | 4 |
| Impeller Vane Quantity | 8 |
| 7287 | 8 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. ⚠<b> WARNING:</b> 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. |
| Impeller Material | Grey Iron |
| Housing Material | Grey Iron |
| 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. |
| Includes Back Housing | No |
| Fan Clutch Included | No |
| Mounting Hardware Included | No |
| Installation Warnings | No |
| Thermostat And Housing Included | No |
| Pulley 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 |
| Impeller Rotation | Reverse |
| 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 |
| Water Pump Drive Type | Timing belt |
| 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. |
Additional Information
| Warranty Special | 24 Months/Unlimited Miles Limited Warranty (Parts Only). Please see ACDelco.com for more details|24 Months/40,000 Kilometers Limited Warranty (Parts Only). Please see ACDelcocanada.com for more details |
| Harmonized Tariff Code (HTS) | 8413309090 |
| Country of Origin (Primary) | CN |
| Warranty Special UOM | TX |
| UPC | 00808709133858 |
A true OEM auto parts brand for GM and non-GM vehicles, ACDelco® offers a wide portfolio of parts designed to keep vehicles on the road longer. These parts work precisely and fit perfectly because they are designed, engineered, tested, and backed by General Motors. But ACDelco also carries aftermarket components that go through the same 18-step quality approval process as the OE parts. Whether customers choose OE or aftermarket, they’d get the same reliable performance, precise engineering, and superior reliability for years to come. ACDelco’s expansive product portfolio includes alternators, filters, batteries, brakes, belts and hoses, oil and fluids, and suspension parts. These products are made to meet GM and non-GM vehicles’ ever-evolving powertrain, collision, maintenance, and repair needs.
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