Important Silverado and Sierra Warning
Some automated marketplace descriptions associate ACDelco 252-719 with later Silverado and Sierra model years. That information should be treated cautiously.
The redesigned 1999-and-newer Silverado and Sierra commonly used LS-based 4.8L, 5.3L, and 6.0L engines, which generally require a different water-pump design. The 252-719 primarily targets earlier traditional small-block and 4.3L V6 applications.
A late-production C/K truck may overlap with early Silverado or Sierra marketing years, so verify:
- Body generation
- VIN
- Engine code
- Original water-pump number
- Pulley spacing
- Hose locations
- Pump rotation
This is precisely why “fits a 1999 Chevy truck” is not enough information. GM built two generations at once because parts-counter employees apparently needed more adversity.
Product Specifications
| Specification | Details |
|---|---|
| Brand | ACDelco |
| Product line | Gold |
| Part number | 252-719 |
| Alternate number | 88926233 |
| GTIN | 00021625516936 |
| UPC | 021625516936 |
| Housing material | Cast iron |
| Impeller material | Steel |
| Impeller vanes | 6 |
| Rotation | Counterclockwise/reverse |
| Drive type | Serpentine accessory belt |
| Hub holes | 4 |
| Fitment type | Vehicle-specific |
| Condition | New |
| Gaskets and seals | Included as packaged |
Replacement Part Numbers
Common interchange references include:
- ACDelco 252-719
- GM 88926233
- GM 10077059
- GM 12369487
- GM 12522031
- GM 12532529
- GM 5743939
- Gates 43114
- WP715
Interchange numbers vary between catalogs. Confirm the original component and current vehicle application before ordering.
Counterclockwise Water-Pump Rotation
The ACDelco 252-719 is designed for a counterclockwise or reverse-rotation accessory drive. This rotation is commonly produced when the smooth side of a serpentine belt drives the pump pulley.
Do not install it on an engine requiring a standard-rotation pump. Pumps may look nearly identical externally while using different impeller geometry.
Incorrect rotation can cause:
- Insufficient coolant flow
- Rapid overheating
- Poor cabin heat
- Coolant aeration
- Localized hot spots
- Engine damage
Before ordering, compare the belt routing and rotation marking with the removed pump.
ACDelco Gold Construction
Coated Seals
ACDelco uses coated seals designed to support durability and resist leakage. Seal life still depends on proper installation, correct coolant chemistry, bearing condition, and cooling-system cleanliness.
Heat-Treated Shaft
The heat-treated shaft assembly is designed to provide greater strength and wear resistance than an untreated shaft.
Permanently Lubricated Bearings
The pump’s sealed bearings are lubricated during manufacturing and require no periodic service. Bearing damage may cause grinding, pulley wobble, or seal failure.
Smooth Coolant Passages
Uniform housing walls and smooth coolant-flow cavities help reduce turbulence and support consistent circulation through the engine and radiator.
ACDelco describes the Gold 88926233 as a premium aftermarket alternative engineered for fit, form, and function on compatible vehicles. See the official ACDelco Gold 88926233 product page.
What Comes With the Pump?
ACDelco states that applicable gaskets, seals, and O-rings are packaged with its Gold water pumps. Contents can vary by application and production batch.
Inspect the package for:
- Main mounting gasket
- Outlet gasket
- O-rings
- Installation instructions
- Required plugs or fittings
The thermostat is not identified as part of this pump package and should be ordered separately when replacement is necessary.
Signs of a Failing Water Pump
Common symptoms include:
- Coolant leaking near the pump
- Dried coolant residue around the housing
- Grinding or rumbling bearing noise
- Pulley wobble
- Belt misalignment
- Engine overheating
- Temperature fluctuations
- Weak cabin heat
- Coolant odor
- Repeated coolant loss
These symptoms can also result from a thermostat, radiator, hose, intake-manifold gasket, heater fitting, or pressure-cap problem.
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 help separate the two failures.
Installation Recommendations
Never open the cooling system while the engine is hot.
General installation steps include:
- Confirm the pump’s rotation and original part number.
- Allow the engine to cool completely.
- Disconnect the battery when required.
- Drain the coolant safely.
- Record the serpentine-belt routing.
- Remove the fan, shroud, pulley, and belt as required.
- Disconnect the radiator and heater hoses.
- Remove the original water pump.
- Clean the engine’s gasket surface.
- Compare the pulley offset and coolant ports.
- Install the supplied gaskets and seals.
- Tighten fasteners to the factory specification.
- Reinstall the pulley, belt, fan, and hoses.
- Refill with the correct coolant.
- Bleed trapped air from the system.
- Pressure-test and check for leaks.
Inspect Related Components
While the pump is removed, inspect:
- Thermostat and housing
- Serpentine belt
- Belt tensioner
- Idler pulleys
- Fan clutch
- Radiator hoses
- Heater hoses
- Radiator
- Pressure cap
- Coolant condition
If the coolant is contaminated or unknown, follow our guide on flushing a cooling system safely.
Use the Correct Coolant
Coolant requirements vary across the broad range of compatible vehicles. Use the specification listed for the exact year, model, and engine.
Do not choose antifreeze solely by color. Our guide to IAT, OAT and HOAT coolant types explains why coolant chemistry matters.
Frequently Asked Questions
What vehicles does ACDelco 252-719 fit?
It fits numerous older GM cars, trucks, SUVs, and vans equipped with compatible serpentine-belt-driven 4.3L V6, 5.0L V8, and 5.7L V8 engines. Common applications include the Camaro, Firebird, C/K truck, Tahoe, Yukon, Suburban, Express, and Savana.
Is 252-719 the same as 88926233?
Yes. ACDelco uses 252-719 as the catalog number and 88926233 as the corresponding GM product number.
Does it fit a 1999 Silverado 1500 with a 5.3L engine?
Generally, no. A redesigned 1999 Silverado with the LS-based 5.3L V8 commonly uses a different pump. A 1999 C/K or “Classic” truck requires separate verification.
Does it fit an LT1 Camaro, Firebird or Caprice?
No. The LT1 uses a camshaft-driven water-pump arrangement. ACDelco 252-719 is designed for selected serpentine-belt-driven engines.
Is this a reverse-rotation water pump?
Yes. Published specifications identify it as a counterclockwise or reverse-rotation pump.
Are the gaskets included?
Yes. Applicable gaskets, seals, and O-rings are included as packaged.
Is the thermostat included?
No thermostat is identified as part of the package.
Is this a GM Original Equipment pump?
No. ACDelco Gold is a premium aftermarket product line. It is designed as a high-quality alternative to an OE service pump.
Final Verdict
The ACDelco Gold 252-719 is a durable branded replacement for a broad range of older GM vehicles using compatible serpentine-driven 4.3L, 5.0L, and 5.7L engines. Its coated seals, heat-treated shaft, sealed bearings, six-vane steel impeller, and included installation seals make it suitable for a conventional cooling-system repair.
Because its coverage spans several generations, verify the pump’s rotation, pulley alignment, original part number, and engine code before ordering.
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