Gates 42271 Engine Water Pump

Gates Water Pump for Ram 2500 and 3500

The Gates 42271 engine water pump is a standard replacement for select Ram heavy-duty trucks from 2019-2025. Built with a cast aluminum housing, cast iron impeller, and a reverse impeller rotation, it is engineered for dependable coolant circulation in demanding cooling systems.

Gates Water Pump (Standard) line focuses on OE-quality fit and consistent operation for everyday repair work on Ram 2500 and Ram 3500 applications. This Gates 42271 water pump includes a pulley and a rubber O-ring, and it is a direct-fit cooling component for accessory-belt-driven setups.

Key Features

• Engine water pump for select 2019-2025 Ram 2500 and Ram 3500 models
• Cast aluminum housing for durable cooling-system service
• Cast iron impeller with reverse rotation
• Pulley included; outside pulley diameter is 82 mm
• Accessory belt drive type; timing belt driven: no
• Contents include the water pump and rubber O-ring
• Fan clutch, back housing, and thermostat housing not included

Detailed Description

Gates 42271 is a standard engine water pump built for Ram 2500 and Ram 3500 trucks that use an accessory belt-driven cooling setup. The pump is manufactured with premium alloy materials and is tested for seal and bearing function as well as leakage integrity of the casting and assembled unit. With a reverse-rotation impeller and cast iron construction, it supports proper coolant movement in the vehicle’s cooling circuit.

This part cross-references GMB 120-4050 for the same application. If you are replacing a worn cooling component on a Ram 2500 or Ram 3500, Gates 42271 provides a direct-fit service part for the listed model years.

What It Helps Solve

• Coolant circulation problems caused by a worn or leaking water pump
• Overheating concerns related to reduced pump performance
• Noise from failing pump bearings or seals
• Coolant loss from leakage at the pump casting or assembly
• Service issues on Ram 2500 and Ram 3500 cooling systems

Installation Notes and Tips

Verify that the vehicle uses an accessory belt-driven water pump before installation. Inspect the pulley, belt condition, and mating surfaces during service, and replace the rubber O-ring if the sealing surface shows wear or contamination. Confirm the pump rotation and fitment against the vehicle’s cooling system layout before final assembly.

Quality Assurance

Gates water pumps are built for OE-quality fit and undergo functional testing of seals and bearings plus leakage testing of the casting and assembled pump. The Gates 42271 is part of the brand’s Water Pump (Standard) line for dependable replacement service on Ram 2500 and Ram 3500 trucks.