GMB 170-3940 Engine Water Pump

Engine Water Pump for Toyota Applications

This GMB engine water pump is built for Toyota cooling system service with OEM-standard construction and fitment coverage for select Tacoma, Tundra, 4Runner, and FJ Cruiser applications. Part number 170-3940 is a new replacement water pump made with an aluminum housing and pulley included for a direct repair-focused installation.

Key Features

• OEM Standard item grade for OE-style replacement performance
• Aluminum construction for durable cooling system service
• Gaskets included for sealing support during installation
• Pulley included for application-specific fitment
• Package contents: 1 metal gasket, 4 studs, 1 O-ring
• Manufactured to meet or exceed OEM specifications

Detailed Product Overview

The GMB 170-3940 engine water pump is designed for Toyota cooling system repair where dependable coolant circulation is required. It is compatible with 2005-2015 Toyota Tacoma, 2005-2010 Toyota Tundra, 2011 Toyota Tundra to 10/2010, 2003-2009 Toyota 4Runner, and 2007-2009 Toyota FJ Cruiser. This part cross-references Airtex AW6037 and Gates 43528 for the same application. The 170-3940 water pump uses aluminum construction and OEM-standard specifications to support proper replacement on Toyota Tacoma and Toyota Tundra cooling systems.

What This Water Pump Helps Address

• Coolant circulation problems caused by a worn pump
• Overheating concerns tied to reduced water pump output
• Coolant seepage at the pump mounting surface
• Noisy operation from a failing pump assembly
• Cooling system service needs on high-mileage Toyota trucks and SUVs

Installation Notes and Tips

Verify engine and model-year fitment before installation, especially on 2011 Toyota Tundra applications noted to 10/2010. Inspect the mating surface, replace worn coolant system components as needed, and follow the vehicle service manual for torque sequence and coolant refill procedures. Confirm pulley alignment and gasket seating during assembly.

Quality Assurance

GMB manufactures this water pump to meet or exceed OEM specifications, with OEM Standard grading for replacement confidence. The part is new and built for direct service use in compatible Toyota cooling applications.