Dayco DP1022 Engine Water Pump

Dayco DP1022 Engine Water Pump

The Dayco DP1022 engine water pump is a direct-fit cooling system replacement for select Jeep applications with serpentine belt drive and reverse rotation. It is built for vehicles that require the correct hub height and hub diameter specified in the fitment notes, helping maintain proper coolant circulation in the engine.

Key Features

• Engine water pump for Belts and Cooling > Water Pump and Related Components
• Fits 1991-1992 Jeep Comanche, reverse rotation; serpentine belt driven
• Fits 1987-1990 Jeep Cherokee, serpentine belt driven; w/ serpentine drive reverse rotation
• Fits 1987-1990 Jeep Comanche, serpentine belt driven; w/ serpentine drive reverse rotation
• Fits 1987-1990 Jeep Wagoneer and 1987 Jeep J10, serpentine belt driven; w/ serpentine drive reverse rotation
• Part number DP1022 for application matching and catalog lookup

Detailed Description

Dayco DP1022 is an engine water pump for Jeep models that use a serpentine belt and reverse-rotation cooling system layout. This part number is listed for 1987-1992 Jeep Cherokee, Comanche, Wagoneer, Wrangler, and 1987 Jeep J10 applications, with specific fitment notes that include reverse rotation and, on select listings, a 3.72-inch hub height with a 2 5/8-inch diameter hub. Use the exact vehicle configuration to confirm the correct replacement before installation.

Common Replacement Reasons

• Coolant circulation loss from a worn pump
• Leakage at the pump housing or seal area
• Noise from a failing bearing or impeller assembly
• Overheating caused by reduced coolant flow
• Incorrect fitment on reverse-rotation serpentine belt systems

Installation Notes and Tips

Verify the engine’s belt routing, rotation direction, hub height, and hub diameter before ordering. This DP1022 application is specific to serpentine belt driven, reverse-rotation Jeep cooling systems, so matching the original pump configuration is critical. Inspect the belt, thermostat, hoses, and coolant condition during replacement to help complete the repair correctly.

Quality Assurance

Dayco is a recognized name in engine drive and cooling components, and DP1022 is cataloged for direct application matching across the listed Jeep fitments. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.