Dayco DP850 Engine Water Pump

Dayco DP850 Engine Water Pump for Nissan

The Dayco DP850 is an engine water pump for select Nissan trucks and cars with V-belt driven cooling systems. It is listed for applications that include a fan clutch, and it covers multiple Nissan D21, Pathfinder, 720, 200SX, and 510 configurations.

Key Features

• Engine water pump for select Nissan applications
• V-belt driven design
• Fits vehicles with fan clutch included where noted
• Application coverage for Nissan D21, Pathfinder, 720, 200SX, and 510
• Dayco part number DP850

Detailed Description

Dayco DP850 is a replacement engine water pump for older Nissan cooling systems that use a V-belt drive. It is cataloged for 1977-1989 Nissan applications, including the D21, Pathfinder, 720, 200SX, and 510, with fitment notes that specify fan clutch use on most listings and A.C. on select 510 and 720 applications. If you are sourcing a Nissan D21 water pump, Nissan Pathfinder water pump, or a Dayco DP850 replacement for a Nissan 200SX, this part number should be matched carefully to the exact year and configuration shown below.

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

Vehicle Fitment

• Fits 1986-1989 Nissan D21, N/A, Fan Clutch Included; V-Belt Driven; w/Fan Clutch
• Fits 1988 Nissan D21, N/A, Fan Clutch Included; From 04/88; V-Belt Driven; w/Fan Clutch
• Fits 1988 Nissan D21, N/A, Fan Clutch Included; To 04/88; V-Belt Driven; w/Fan Clutch
• Fits 1987-1988 Nissan Pathfinder, N/A, Fan Clutch Included; V-Belt Driven; w/Fan Clutch
• Fits 1982-1986 Nissan 720, N/A, Fan Clutch Included; V-Belt Driven; w/Fan Clutch
• Fits 1977-1983 Nissan 200SX, N/A, Fan Clutch Included; V-Belt Driven; w/Fan Clutch
• Fits 1978-1981 Nissan 510, N/A, Fan Clutch Included; V-Belt Driven; w/ A.C.
• Fits 1980-1981 Nissan 720, N/A, Fan Clutch Included; V-Belt Driven; w/ A.C.
• Fits 1979 Nissan 200SX, N/A, Fan Clutch Included; From 02/79; V-Belt Driven; w/Fan Clutch
• Fits 1979 Nissan 200SX, N/A, Fan Clutch Included; To 01/79; V-Belt Driven; w/Fan Clutch

Installation Notes and Tips

Confirm the vehicle year, engine configuration, and accessory drive setup before ordering. This water pump is listed for V-belt driven systems, so it should be matched to the original belt arrangement and the fan clutch note shown for the specific application. Verify whether your Nissan D21, Pathfinder, 720, 200SX, or 510 uses the exact fitment window shown in the catalog.

Quality Assurance

Dayco is a recognized aftermarket brand for engine drive and cooling components. Use the cataloged fitment details for DP850 to confirm application accuracy before installation.