Dayco DP816 Engine Water Pump

Dayco DP816 Engine Water Pump

The Dayco DP816 engine water pump is a direct-fit cooling system component for select GM trucks and vans with serpentine belt driven systems. It is built for applications that need consistent coolant circulation to help maintain stable operating temperatures.

Key Features

• Engine water pump for Belts and Cooling applications
• Fits serpentine belt driven systems on listed vehicles
• Direct application coverage for select Chevrolet and GMC models
• Dayco DP816 part number for accurate catalog matching

Detailed Description

Dayco DP816 is an engine water pump for 1987-1993 Chevrolet S10, 1991-1993 GMC Sonoma, 1987-1990 Chevrolet Astro, 1987-1990 GMC S15, 1987-1990 GMC Safari, 1987-1988 Chevrolet S10 Blazer, and 1987-1988 GMC S15 Jimmy equipped with serpentine belt driven systems. If you are replacing a worn water pump on a Chevrolet S10 or GMC Sonoma cooling system, this part number helps narrow the search to the correct application. The DP816 supports coolant flow through the engine and radiator circuit, which is essential for temperature control in daily driving and load conditions.

What It Helps Address

• Coolant circulation problems caused by a worn pump
• Overheating from reduced water pump performance
• Coolant leaks at the pump housing or seal area
• Noise from a failing pump bearing
• Temperature instability in serpentine belt driven cooling systems

Installation Notes and Tips

Verify engine configuration and serpentine belt driven system details before ordering. Inspect the belt, pulleys, hoses, and coolant condition during replacement, and flush the cooling system if contamination is present. Confirm fitment against the vehicle listing for your Chevrolet S10, GMC Sonoma, or other listed GM application before installation.

Quality Assurance

Dayco is a recognized name in automotive belt and cooling components, and the DP816 is cataloged for the specific vehicle applications shown above. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.