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Part TypeAuxiliary Water Pump
BrandACDELCO
Mounting Hole Quantity2
Good Maintenance Practices - Section 1 - Bullet 1Clean all excess dirt and debris from the water pump housing.
Outlet Pipe Diameter0.83
Terminal GenderMale
Good Maintenance Practices - Section 1 - Bullet 4A 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.
Connector ColorBlack
Good Maintenance Practices - Section 1 - Bullet 2Run your vehicle to increase engine temperature, and ensure the system is pressurized.
Good Maintenance Practices - Section 1 - Bullet 3Inspect for leakage at the water pump outlet housing or the rear cover gasket, and leakage at the water pump vent or weep hole.
Product DescriptionAn ACDelco GM Original Equipment Engine Auxiliary Water Pump is used in some vehicles to pump engine coolant during certain operating conditions. While your engine's main water pump is mechanically driven and stops when the engine does, an auxiliary water pump is electric and able to circulate coolant after the engine is shut off, keeping coolant flowing to where it needs to go. These original equipment auxiliary water pumps have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors. ⚠<b> WARNING:</b> Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Mount Hole Quantity1
Mount Hole Diameter (In)0.315in
Pulley IncludedNo
Gasket Or Seal IncludedNo
ColorBlack
Width (In)5.2
Terminal TypeBlade
Inlet Pipe Diameter0.83
Connector ShapeOval
Length (In)5.7
Part CategoryReplacement Parts
Programming RequiredNo
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 1Leaking Coolant - Puddles of coolant under your vehicle, a constant drip or stream of coolant from the water pump's weep hole, or a constantly empty or low coolant reservoir are all signs of potential water pump wear, and may be caused by cracks in the pump, or seal or gasket failures.
Signs Of Wear &#38; Troubleshooting - Section 1 - HeaderSigns of wear for heater water pumps include but are not limited to:
Depth122
Faq - Answer 5No. 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.
Faq - Answer 4Yes. 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.
Mounting Bracket IncludedYes
Faq - Answer 3Yes. 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.
Mounting Hole Diameter0.48
Faq - Answer 2No. Water pumps can vary greatly in size and appearance depending on the vehicle they are designed for.
Faq - Answer 1Yes. ACDelco GM Original Equipment parts are equivalent to your GM vehicle's original factory components.
Features &#38; Benefits - Bullet 2GM-recommended replacement part for your GM vehicle's original factory component
Features &#38; Benefits - Bullet 3Offering the quality, reliability, and durability of GM OE
Features &#38; Benefits - Bullet 4Manufactured to GM OE specification for fit, form, and function
Terminal Quantity3
Features &#38; Benefits - Bullet 1Thoroughly tested for reliable, leak-free performance
Good Maintenance Practices - Section 1 - HeaderTips for Water Pump Inspection:
Connector GenderFemale
Mounting Hardware IncludedNo
MaterialPlastic
RotationClockwise (Right)
TypeElectric
Mount Hole Diameter (Mm)8mm
Height (In)3.2
Faq - Question 5Does the water pump work when my vehicle is turned off?
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 2Engine Overheating - If your vehicle's engine overheats, it may not be receiving the required coolant flow. Make sure that your vehicle's cooling system contains the proper level of coolant.
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 3Rumbling Noise in the Pump - A rumbling, squeaking, or screeching noise near the front of your vehicle when you start it may indicate a malfunctioning water pump bearing.
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 4Visible 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 water pump failure and should be addressed.
Part FitmentDirect Fit
Faq - Question 4Does the water pump affect the temperature inside the passenger compartment of my vehicle?
Faq - Question 3Can a malfunctioning water pump harm my engine?
Weight (Lb)0.73
Grade TypeOE
Faq - Question 2Do all water pumps look the same?
Faq - Question 1Will ACDelco GM Original Equipment Water Pumps, Kits and other components match the quality of my GM vehicle's original factory parts?
Vendor Part Number251-797
Package Qty1
Package TypeEA
No Questions
No Reviews
Some parts are not legal for use in California or other states with similar laws / regulations
