Gates 44056 Engine Water Pump

Gates 44056 Water Pump Overview

The Gates 44056 engine water pump is a standard replacement for select Chevrolet, GMC, and Hummer applications that need reliable coolant circulation and OE-style fitment. Built with a cast aluminum housing, cast iron impeller, and included pulley, it supports accessory-belt driven cooling systems with reverse impeller rotation.

Gates Water Pump (Standard) components are built for consistent operation and are individually tested for seal and bearing function as well as leakage performance. This makes the Gates 44056 a practical choice for a Chevrolet Express 2500 water pump replacement, GMC Savana 3500 cooling repair, or Hummer H1 service job where correct fit and dependable sealing matter.

Key Features

• Cast aluminum housing for durable cooling-system service
• Cast iron impeller with reverse rotation
• Accessory belt drive style
• Pulley included for listed applications
• Water pump and gasket included
• 100 percent functional testing of seals and bearings
• 100 percent leakage testing of the casting and assembled pump

Detailed Description

The Gates 44056 water pump is engineered as a direct-fit engine water pump for vehicles using an accessory belt drive and reverse-rotation design. Its cast aluminum housing and cast iron impeller are selected for strength and stable coolant movement, while the included pulley supports proper belt-driven operation. This part number is commonly searched as Gates 44056 water pump, Gates 44056 engine water pump, and OE-style replacement water pump for Chevrolet Express, GMC Savana, and Hummer H1 models.

This part cross-references Airtex AW5086 and Dayco DP1039 for the same application.

Vehicle Fitment

• Fits 2002-2004 Hummer H1, N/A
• Fits 1999-2002 Chevrolet Express 2500, N/A
• Fits 1999-2002 Chevrolet Express 3500, N/A
• Fits 1999-2002 GMC Savana 2500, N/A
• Fits 1999-2002 GMC Savana 3500, N/A
• Fits 2000 Chevrolet C2500, N/A
• Fits 2000 Chevrolet C3500, N/A
• Fits 2000 Chevrolet K2500, N/A
• Fits 2000 Chevrolet K3500, N/A
• Fits 2000 GMC C2500, N/A
• Fits 2000 GMC C3500, N/A
• Fits 2000 GMC K2500, N/A
• Fits 2000 GMC K3500, N/A
• Fits 1999 Chevrolet C1500 Suburban, N/A, W/Pulley & thread-on fan clutch
• Fits 1999 Chevrolet C2500, N/A, W/Pulley & thread-on fan clutch
• Fits 1999 Chevrolet C2500 Suburban, N/A, W/Pulley & thread-on fan clutch
• Fits 1999 Chevrolet C3500, N/A, W/Pulley & thread-on fan clutch
• Fits 1999 Chevrolet K1500 Suburban, N/A, W/Pulley & thread-on fan clutch
• Fits 1999 Chevrolet K2500, N/A, W/Pulley & thread-on fan clutch
• Fits 1999 Chevrolet K2500 Suburban, N/A, W/Pulley & thread-on fan clutch
• Fits 1999 Chevrolet K3500, N/A, W/Pulley & thread-on fan clutch
• Fits 1999 Chevrolet P30, N/A
• Fits 1999 GMC C1500 Suburban, N/A, W/Press-on pulley for thread-on fan clutch
• Fits 1999 GMC C2500, N/A, W/Pulley & thread-on fan clutch
• Fits 1999 GMC C2500 Suburban, N/A, W/Press-on pulley for thread-on fan clutch
• Fits 1999 GMC C3500, N/A, W/Pulley & thread-on fan clutch
• Fits 1999 GMC K1500 Suburban, N/A, W/Press-on pulley for thread-on fan clutch
• Fits 1999 GMC K2500, N/A, W/Pulley & thread-on fan clutch
• Fits 1999 GMC K2500 Suburban, N/A, W/Pulley & thread-on fan clutch
• Fits 1999 GMC K3500, N/A, W/Pulley & thread-on fan clutch
• Fits 1999 GMC P3500, N/A

What It Helps Resolve

• Coolant circulation problems caused by a worn water pump
• Leakage from a failing pump casting, seal, or bearing
• Overheating concerns tied to reduced coolant flow
• Belt-drive service issues when the original pulley is damaged or missing
• Noise from a worn pump bearing in Chevrolet Express, GMC Savana, or Hummer H1 applications

Installation Notes

Verify reverse impeller rotation, accessory belt drive layout, and pulley style before installation. Confirm the vehicle’s cooling-system configuration, especially on 1999 applications with thread-on fan clutch or press-on pulley notes. Replace the gasket during service and inspect the belt, hoses, and thermostat condition while the cooling system is open.

Quality Assurance

Gates tests each new water pump for seal and bearing function and performs leakage testing on both the casting and assembled unit. The Gates 44056 is built to deliver OE-quality fit for the listed Chevrolet, GMC, and Hummer applications.