Gates 44045 Engine Water Pump

Gates 44045 Water Pump Overview

The Gates 44045 engine water pump is a standard replacement for select Chevrolet and GMC trucks and SUVs with accessory-belt drive cooling systems. Built with a cast iron housing and stamped steel impeller, it is engineered for OE-quality fit and dependable coolant circulation in applications such as the Chevrolet Silverado 2500 HD and GMC Sierra 3500.

Gates Water Pump (Standard) products focus on durable construction and verified performance. This Gates 44045 water pump is factory tested for seal and bearing function, then leakage tested at the casting and assembled unit level to help support consistent cooling-system operation.

Key Features

• Cast iron housing for strength and corrosion resistance
• Stamped steel impeller with reverse rotation
• Accessory belt drive style
• Two outlet configuration
• Includes water pump and 2 gaskets
• No back housing, thermostat housing, fan clutch, or pulley included
• Not timing belt driven

Detailed Product Description

Gates part number 44045 is a standard engine water pump built for vehicles that use a reverse-rotation, accessory-belt-driven cooling setup. The cast iron housing and stamped steel impeller support stable coolant flow, while the OE-quality fit helps simplify replacement on the correct application. This part cross-references Airtex AW5089 for the same application.

Compatible With 2001-2006 Chevrolet Silverado 2500 HD, 2001-2006 Chevrolet Silverado 3500, 2001-2006 Chevrolet Suburban 2500, 2002-2006 Chevrolet Avalanche 2500, 2007 Chevrolet Silverado 2500 HD Classic, 2007 Chevrolet Silverado 3500 Classic, 2001-2006 GMC Sierra 2500 HD, 2001-2006 GMC Sierra 3500, 2007 GMC Sierra 2500 HD Classic, 2007 GMC Sierra 3500 Classic, and 2001-2006 GMC Yukon XL 2500.

Common Cooling System Issues

• Coolant leakage from a worn pump seal or casting surface
• Overheating caused by reduced coolant circulation
• Noise from worn bearings in the water pump assembly
• Impeller wear that can reduce coolant movement
• Replacement needs during cooling-system service on Silverado, Sierra, Avalanche, Suburban, or Yukon XL applications

Installation Notes

Verify reverse-rotation operation, accessory-belt drive layout, and outlet configuration before installation. Inspect the mating surfaces, replace the gaskets supplied with the pump, and confirm belt condition, pulley alignment, and coolant condition during service. For best results, flush the cooling system and check for leaks after installation.

Quality Assurance

Gates manufactures this water pump with premium alloy materials and tests each unit for seal and bearing function as well as leakage at both the casting and assembled pump level. The result is a replacement water pump built to meet OE-quality fit expectations for the listed Chevrolet and GMC applications.