Confirm:
- Vehicle VIN
- Engine code
- Production date
- Original pump number
- Pulley and flange design
- Coolant-port arrangement
- Gasket shape
- Belt routing
The year-and-model ranges above should be used for initial research, not as a substitute for a VIN-based catalog lookup.
Product Specifications
| Specification | Details |
|---|---|
| Brand | ACDelco |
| Product line | Gold |
| ACDelco number | 252-962 |
| GM product number | 19325605 |
| Product type | Mechanical engine water pump |
| Housing material | Aluminum |
| Impeller material | Steel |
| Impeller vanes | 6 |
| Pump rotation | Clockwise |
| Flow rating | Standard volume |
| Drive type | Accessory belt |
| Fitment | Vehicle-specific |
| Gasket | Included |
| Mounting hardware | Included as packaged |
| Condition | New |
Replacement and Interchange Numbers
Common references include:
- ACDelco 252-962
- GM 19325605
- GM 19195148
- GM 12657499
- ACDelco 251-749
- ACDelco 252-889
- Airtex AW6049
- Gates 45007
- GMB 130-1820
Interchange numbers can differ according to application and catalog revision. Verify the original pump before ordering.
ACDelco Gold Construction
Coated Mechanical Seals
The coated seals are designed to support longer sealing life and leak-resistant operation. Seal durability still depends on correct coolant, proper installation, and controlled shaft movement.
Heat-Treated Shaft Assembly
Heat treatment strengthens the shaft and improves resistance to wear. The shaft must support the pulley and impeller while operating continuously under accessory-belt load.
Permanently Lubricated Bearings
The pump bearings are sealed and lubricated during production. They require no routine adjustment or external lubrication.
Six-Vane Steel Impeller
Published specifications identify a six-vane steel impeller with clockwise rotation. The impeller is designed to reproduce the coolant flow needed by compatible GM High Feature V6 engines.
Tested for Leak-Resistant Performance
ACDelco states that Gold water pumps receive testing intended to verify consistent cooling and leak-resistant operation. The official ACDelco Gold 19325605 product page describes the pump as a premium aftermarket alternative to original-equipment components.
What Comes With the Pump?
The package is described as including:
- One ACDelco Gold water pump
- Water-pump gasket
- Applicable seals or O-rings
- Mounting hardware, as packaged
The thermostat is not listed as an included component. Inspect or replace it separately when necessary.
How the 252-962 Water Pump Works
The engine’s accessory belt turns the pump pulley and shaft. The shaft drives the impeller, circulating coolant through the:
- Engine block
- Cylinder heads
- Heater core
- Thermostat
- Radiator
Proper circulation helps control combustion temperatures and prevents localized hot spots inside the aluminum engine.
The thermostat determines when coolant flows through the radiator, while the cooling fans control airflow at low vehicle speeds. The water pump is important, but—as usual—the cooling system insists on making everyone participate.
Signs of a Failing GM V6 Water Pump
Possible symptoms include:
- Coolant leaking from the pump
- Dried coolant around the housing
- Grinding or whining noises
- Pump-pulley wobble
- Repeated coolant loss
- Engine overheating
- Temperature fluctuations
- Weak or inconsistent cabin heat
- Sweet coolant odor
- Steam from the engine compartment
These symptoms can also be caused by a thermostat, radiator, hose, pressure cap, cooling fan, or internal engine leak.
Use our guide explaining how to find a coolant leak before replacing parts. Our comparison of a bad thermostat versus a bad water pump can also help isolate the problem.
Installation Recommendations
Never open a pressurized cooling system while the engine is hot.
General replacement steps include:
- Verify the VIN and original pump number.
- Allow the engine to cool completely.
- Disconnect the battery when required.
- Drain the coolant into an approved container.
- Remove covers and intake components blocking access.
- Record the accessory-belt routing.
- Release the tensioner and remove the belt.
- Disconnect the necessary hoses and fittings.
- Remove the original water pump.
- Clean and inspect the gasket surface.
- Compare every mounting point and coolant passage.
- Install the supplied gasket and hardware.
- Tighten the fasteners to factory specifications.
- Reinstall the pulley, belt, hoses, and removed components.
- Refill with the correct coolant.
- Bleed trapped air using the vehicle-specific procedure.
- Pressure-test and inspect for leakage.
Water-pump access varies significantly between front-wheel-drive cars, crossovers, and rear-wheel-drive models. Use service information for the exact vehicle.
Inspect Related Components
During replacement, inspect:
- Accessory belt
- Belt tensioner
- Idler pulleys
- Thermostat and housing
- Radiator hoses
- Heater hoses
- Expansion tank and cap
- Radiator
- Electric cooling fans
- Coolant condition
If the old coolant is contaminated or its history is unknown, review our guide on flushing a cooling system without damaging it.
Use the Correct Coolant
Use coolant meeting the GM or vehicle-manufacturer specification for the exact model and production year. This is especially important for Saab and Suzuki applications that use GM-derived engines but may have different service documentation.
Do not select antifreeze strictly by color. Our guide to IAT, OAT and HOAT coolant types explains why coolant chemistry matters.
Frequently Asked Questions
What vehicles does ACDelco 252-962 fit?
It fits selected Buick, Cadillac, Chevrolet, GMC, Pontiac, Saab, Saturn, and Suzuki vehicles equipped with compatible 2.8L, 3.0L, or 3.6L High Feature V6 engines.
Is 252-962 the same as 19325605?
Yes. ACDelco uses 252-962 as its catalog number and 19325605 as the corresponding GM product number.
Does it fit a 2010–2015 Chevrolet Equinox?
It fits selected Equinox applications equipped with compatible 3.0L or 3.6L V6 engines. It does not fit the four-cylinder engine.
Does it fit a GMC Acadia?
The official catalog identifies applications for the 2007–2016 Acadia and 2017 Acadia Limited with the compatible 3.6L V6.
Does it fit a four-cylinder Chevrolet Malibu?
No. This pump is intended for selected V6 applications. The four-cylinder engines use different water pumps.
Are the gasket and bolts included?
Retail information indicates that a gasket and applicable mounting hardware are included. Confirm the package contents before installation.
Is the thermostat included?
No thermostat is identified as part of this package.
Is this an original GM water pump?
No. ACDelco Gold is a premium aftermarket line backed by General Motors. It is an alternative to a GM Genuine Parts pump.
Is this pump timing-belt driven?
No. Reliable specifications describe the 252-962 as an accessory-belt-driven pump. Some marketplace listings incorrectly identify it as timing-belt driven.
Final Verdict
The ACDelco Gold 252-962 provides a branded aftermarket replacement for numerous GM High Feature V6 applications. Its aluminum housing, six-vane steel impeller, coated seals, heat-treated shaft, permanently lubricated bearings, and included gasket make it a strong option for a properly verified vehicle.
Because GM used several 2.8L, 3.0L, and 3.6L engine variations, always confirm the VIN and original pump number before purchasing.
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