Dayco DP963 Engine Water Pump

Engine Water Pump for GM Serpentine Applications

Dayco DP963 is an engine water pump for select Chevrolet, GMC, Cadillac, Oldsmobile, and Pontiac vehicles from 1987-1996. It is listed for serpentine belt driven, standard duty applications with a 6.9 in. hub height on many truck, van, SUV, and performance models.

Key Features

• Dayco engine water pump, part number DP963
• Compatible with many Chevrolet and GMC serpentine belt driven cooling systems
• 6.9 in. hub height noted across most listed applications
• Standard duty, standard version configuration
• Used on a wide range of GM trucks, vans, SUVs, and V8 passenger cars

Detailed Description

DP963 is a replacement engine water pump for GM vehicles that use a serpentine belt drive and standard duty cooling setup. The fitment list includes Chevrolet G30, Astro, Blazer, C1500, K1500, S10, Tahoe, Camaro, and Caprice, along with matching GMC, Cadillac, Oldsmobile, and Pontiac applications. For buyers searching for a Dayco DP963 water pump for Chevrolet G30 or a Dayco DP963 water pump for GMC K1500, this part number matches the listed configurations and model years.

This part cross-references no additional part numbers in the provided data.

What It Helps Address

• Coolant circulation problems caused by a worn pump
• Overheating from reduced water pump output
• Leakage at the pump housing or seal area
• Noise or bearing wear from an aging pump assembly
• Service replacement on serpentine belt driven GM cooling systems

Installation Notes and Tips

• Verify hub height, belt drive type, and standard duty configuration before ordering.
• Confirm the vehicle’s year, make, and model against the fitment list, especially on Chevrolet Caprice and Cadillac Brougham applications.
• Inspect the serpentine belt, tensioner, hoses, and coolant condition during water pump service.
• Drain and refill coolant according to the vehicle service procedure after installation.

Quality Assurance

Dayco is the brand behind DP963, and this water pump is cataloged for direct-fit GM applications listed in the fitment data. Use the confirmed vehicle coverage to match the correct pump for Chevrolet S10, GMC Sonoma, and related 1987-1996 models.