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ACDelco 251-731 Engine Water Pump

ACDelco 251-731 Engine Water Pump Image 1
ACDelco 251-731 Engine Water Pump Image 2
ACDelco 251-731 Engine Water Pump Image 3
ACDelco 251-731 Engine Water Pump

ACDelco
Brand:ACDelco
Part Number: 251-731
UPC: 00707773438176
Weight: 2.83 lbs
Condition:New



Availability:
0 in Stock
 OUT OF STOCK

Product Information

Description:

Get the ACDelco 251-731 Engine Water Pump for your vehicle. Buy now and secure your purchase online!

An ACDelco GM Original Equipment Engine Water Pump circulates coolant through your vehicle's radiator and engine system to help maintain proper engine temperature and performance. This original equipment water pump has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors. ⚠ WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov

Features and Benefits:

  • Coated seals with a stainless steel spring for durability
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Manufactured to GM OE specification for fit, form, and function
  • Offering the quality, reliability, and durability of GM OE
  • Thoroughly tested for reliable, leak-resistant performance
  • Uniform wall sections and smooth coolant-flow cavities for efficient operation

Specifications:

Fan Clutch Included:
No
Height (in):
4.1 in
Housing Material:
Aluminum
Hub Height:
2.99 in.
Hub Height:
76.16 mm
Hub Hole Quantity:
4
Impeller Material:
Steel
Impeller Rotation:
Standard
Impeller Vane Quantity:
6
Includes Back Housing:
No
Includes Thermostat and Housing:
No
Installation Warnings:
No
Length (in):
5.6 in
Mounting Hardware Included:
No
Mounting Hole Quantity:
5
Outlet Quantity:
0
Programming Required:
No
Pulley Included:
No
Related Cooling Fan Components:
None
Thermostat And Housing Included:
No
Water Pump Drive Type:
Serpentine Belt
Weight (lb):
2.83 lb
Width (in):
4.4 in

Features and Benefits:

  • – 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.
  • – After installation, pressure-test the system for leaks and check for sufficient fan blade clearance between the blade and radiator shroud.
  • – Clean all excess dirt and debris from the water pump housing.
  • – Clean all sealing surfaces, and make sure all old gasket material is removed before installing your replacement component.
  • – Clean and reinstall the coolant recovery reservoir before flushing the cooling system.
  • – Do not use any non-approved flush agents and replace the coolant according to manufacturer's specifications.
  • – 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.
  • – Inspect for leakage at the water pump outlet housing or the rear cover gasket, and leakage at the water pump vent or weep hole.
  • – Inspect related components in the cooling system, including your fan blades, fan clutch, engine mounts, radiator, belts and hoses, and reservoir.
  • – Never strike the water pump shaft, since this will damage the new water pump.
  • – Run your vehicle to increase engine temperature, and ensure the system is pressurized.
  • – 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 pump installed, turn the hub by hand and check for rotation.
  • Before purchasing and installing an engine water pump, make sure it is the correct fit for your vehicle.
  • Tips for Water Pump Inspection:
  • Tips for Water Pump Servicing & Installation:

Specifications:

Country of Origin:
CA

Select a vehicle to narrow ACDelco 251-731 Engine Water Pump fitment info!

Last Updated: 03/01/2024

Years Vehicle Per Vehicle Fit NotesFitment Notes
Buick Rainier

4.2L L6 Gas DOHC
1
 
INCLUDES GASKET
Eng: LL8
8th VIN Digit: S
 

Buick Rainier



4.2L L6 Gas DOHC INCLUDES GASKET
Eng: LL8
8th VIN Digit: S

1 Per Vehicle
Chevrolet Colorado

2.9L L4 Gas DOHC
1
 
INCLUDES GASKET
Eng: LLV
8th VIN Digit: 9
 

Chevrolet Colorado



2.9L L4 Gas DOHC INCLUDES GASKET
Eng: LLV
8th VIN Digit: 9

1 Per Vehicle
Chevrolet Colorado

3.7L L5 Gas DOHC
1
 
INCLUDES GASKET
Eng: LLR
8th VIN Digit: E
 

Chevrolet Colorado



3.7L L5 Gas DOHC INCLUDES GASKET
Eng: LLR
8th VIN Digit: E

1 Per Vehicle
Chevrolet Colorado

2.8L L4 Gas DOHC
1
 
INCLUDES GASKET
8th VIN Digit: 8
 

Chevrolet Colorado



2.8L L4 Gas DOHC INCLUDES GASKET
8th VIN Digit: 8

1 Per Vehicle
Chevrolet Colorado

3.5L L5 Gas DOHC
1
 
INCLUDES GASKET
8th VIN Digit: 6
 

Chevrolet Colorado



3.5L L5 Gas DOHC INCLUDES GASKET
8th VIN Digit: 6

1 Per Vehicle
Chevrolet Trailblazer

4.2L L6 Gas DOHC
1
 
INCLUDES GASKET
Eng: LL8
8th VIN Digit: S
 

Chevrolet Trailblazer



4.2L L6 Gas DOHC INCLUDES GASKET
Eng: LL8
8th VIN Digit: S

1 Per Vehicle
Chevrolet Trailblazer EXT

4.2L L6 Gas DOHC
1
 
INCLUDES GASKET
Eng: LL8
8th VIN Digit: S
 

Chevrolet Trailblazer EXT



4.2L L6 Gas DOHC INCLUDES GASKET
Eng: LL8
8th VIN Digit: S

1 Per Vehicle
GMC Canyon

2.9L L4 Gas DOHC
1
 
INCLUDES GASKET
Eng: LLV
8th VIN Digit: 9
 

GMC Canyon



2.9L L4 Gas DOHC INCLUDES GASKET
Eng: LLV
8th VIN Digit: 9

1 Per Vehicle
GMC Canyon

3.7L L5 Gas DOHC
1
 
INCLUDES GASKET
Eng: LLR
8th VIN Digit: E
 

GMC Canyon



3.7L L5 Gas DOHC INCLUDES GASKET
Eng: LLR
8th VIN Digit: E

1 Per Vehicle
GMC Canyon

2.8L L4 Gas DOHC
1
 
INCLUDES GASKET
8th VIN Digit: 8
 

GMC Canyon



2.8L L4 Gas DOHC INCLUDES GASKET
8th VIN Digit: 8

1 Per Vehicle
GMC Canyon

3.5L L5 Gas DOHC
1
 
INCLUDES GASKET
8th VIN Digit: 6
 

GMC Canyon



3.5L L5 Gas DOHC INCLUDES GASKET
8th VIN Digit: 6

1 Per Vehicle
GMC Envoy

4.2L L6 Gas DOHC
1
 
INCLUDES GASKET
Eng: LL8
8th VIN Digit: S
 

GMC Envoy



4.2L L6 Gas DOHC INCLUDES GASKET
Eng: LL8
8th VIN Digit: S

1 Per Vehicle
GMC Envoy XL

4.2L L6 Gas DOHC
1
 
INCLUDES GASKET
Eng: LL8
8th VIN Digit: S
 

GMC Envoy XL



4.2L L6 Gas DOHC INCLUDES GASKET
Eng: LL8
8th VIN Digit: S

1 Per Vehicle
GMC Envoy XUV

4.2L L6 Gas DOHC
1
 
INCLUDES GASKET
Eng: LL8
8th VIN Digit: S
 

GMC Envoy XUV



4.2L L6 Gas DOHC INCLUDES GASKET
Eng: LL8
8th VIN Digit: S

1 Per Vehicle
Hummer H3

3.7L L5 Gas DOHC
1
 
INCLUDES GASKET
Eng: LLR
8th VIN Digit: E
4WD
 

Hummer H3



3.7L L5 Gas DOHC INCLUDES GASKET
Eng: LLR
8th VIN Digit: E
4WD

1 Per Vehicle
Hummer H3

3.5L L5 Gas DOHC
1
 
INCLUDES GASKET
8th VIN Digit: 6
4WD
 

Hummer H3



3.5L L5 Gas DOHC INCLUDES GASKET
8th VIN Digit: 6
4WD

1 Per Vehicle
Hummer H3T

3.7L L5 Gas DOHC
1
 
INCLUDES GASKET
Eng: LLR
8th VIN Digit: E
4WD
 

Hummer H3T



3.7L L5 Gas DOHC INCLUDES GASKET
Eng: LLR
8th VIN Digit: E
4WD

1 Per Vehicle
Isuzu Ascender

4.2L L6 Gas DOHC
1
 
INCLUDES GASKET
Eng: LL8
8th VIN Digit: S
 

Isuzu Ascender



4.2L L6 Gas DOHC INCLUDES GASKET
Eng: LL8
8th VIN Digit: S

1 Per Vehicle
Isuzu i-280

2.8L L4 Gas DOHC
1
 
INCLUDES GASKET
8th VIN Digit: 8
 

Isuzu i-280



2.8L L4 Gas DOHC INCLUDES GASKET
8th VIN Digit: 8

1 Per Vehicle
Isuzu i-290

2.9L L4 Gas DOHC
1
 
INCLUDES GASKET
Eng: LLV
8th VIN Digit: 9
 

Isuzu i-290



2.9L L4 Gas DOHC INCLUDES GASKET
Eng: LLV
8th VIN Digit: 9

1 Per Vehicle
Isuzu i-350

3.5L L5 Gas DOHC
1
 
INCLUDES GASKET
8th VIN Digit: 6
 

Isuzu i-350



3.5L L5 Gas DOHC INCLUDES GASKET
8th VIN Digit: 6

1 Per Vehicle
Isuzu i-370

3.7L L5 Gas DOHC
1
 
INCLUDES GASKET
Eng: LLR
8th VIN Digit: E
 

Isuzu i-370



3.7L L5 Gas DOHC INCLUDES GASKET
Eng: LLR
8th VIN Digit: E

1 Per Vehicle
Oldsmobile Bravada

4.2L L6 Gas DOHC
1
 
INCLUDES GASKET
Eng: LL8
8th VIN Digit: S
 

Oldsmobile Bravada



4.2L L6 Gas DOHC INCLUDES GASKET
Eng: LL8
8th VIN Digit: S

1 Per Vehicle
Saab 9-7x

4.2L L6 Gas DOHC
1
 
INCLUDES GASKET
Eng: LL8
8th VIN Digit: S
 

Saab 9-7x



4.2L L6 Gas DOHC INCLUDES GASKET
Eng: LL8
8th VIN Digit: S

1 Per Vehicle