Gates 42004 Engine Water Pump

Engine Water Pump for Jeep Applications

The Gates 42004 engine water pump is built for Jeep cooling system service with OE-quality fit and dependable operation. It is a standard water pump for select Jeep Cherokee, Comanche, and Wagoneer models, with a cast aluminum housing and stamped steel impeller for durable cooling performance.

Key Features

• Cast aluminum housing for strength and corrosion resistance
• Stamped steel impeller
• Reverse impeller rotation
• Accessory belt drive style
• Includes water pump and gasket
• Two outlet design
• No back housing, thermostat housing, fan clutch, or pulley included
• Not timing belt driven

Product Details

Gates Water Pump (Standard) part number 42004 is engineered for direct replacement service on Jeep cooling systems that use an accessory belt-driven pump. The pump is 100 percent function tested for seals and bearings and 100 percent leakage tested at the casting and assembled pump level. For Jeep Cherokee, Jeep Comanche, and Jeep Wagoneer owners, this water pump supports proper coolant circulation and helps maintain stable engine operating temperatures.

This part cross-references Airtex AW3412 and Dayco DP589 for the same application.

Common Cooling System Issues It Can Address

• Coolant leakage from the pump housing or seal area
• Noise from worn pump bearings
• Overheating caused by reduced coolant circulation
• Impeller wear that limits coolant flow
• Cooling system service on Jeep Cherokee, Comanche, or Wagoneer models

Installation Notes and Tips

• Verify reverse rotation before installation to match the engine drive setup.
• Inspect the accessory belt, gasket surfaces, and adjacent cooling components during replacement.
• Confirm outlet alignment and mounting points against the original pump.
• Use the included gasket during installation and follow the vehicle service procedure for coolant refill and bleeding.

Quality Assurance

Gates manufactures this water pump with premium alloy materials and performs seal, bearing, and leakage testing to support consistent service quality. Part number 42004 is built to deliver OE-quality fit for select Jeep applications.