GMB 470-3426 Accessory Drive Belt Idler Pulley

Accessory Drive Belt Idler Pulley for Toyota A/C Belt

The GMB 470-3426 accessory drive belt idler pulley is built for Toyota applications that use an A/C belt. It is manufactured to meet or exceed OEM specifications and uses a metal pulley design with a single groove for serpentine and V-belt routing.

Fits 2003-2018 Toyota 4Runner, for A/C belt. Fits 2006-2018 Toyota Tacoma, for A/C belt. Fits 2007-2014 Toyota FJ Cruiser, for A/C belt. Fits 2007-2014 Toyota Tundra, for A/C belt.

Key Features

• GMB accessory drive belt idler pulley, part number 470-3426
• Manufactured to meet or exceed OEM specifications
• Metal pulley construction for durability in belt drive service
• Single-groove pulley design
• Works with serpentine and V-belt systems
• Direct fit for Toyota A/C belt applications across multiple model years

Detailed Description

This GMB idler pulley is a replacement component for the accessory drive belt system on Toyota trucks and SUVs. It is designed for A/C belt routing and is listed for 2003-2018 Toyota 4Runner, 2006-2018 Toyota Tacoma, 2007-2014 Toyota FJ Cruiser, and 2007-2014 Toyota Tundra. The 470-3426 part number is also referenced in aftermarket catalogs for the same application, including Dayco 89169 and Four Seasons 36174.

Built with a metal pulley and a single groove, this pulley supports belt tracking in serpentine and V-belt setups. If you are replacing a worn Toyota 4Runner idler pulley, Tacoma A/C belt pulley, FJ Cruiser belt pulley, or Tundra accessory drive belt pulley, this part provides the OE-style fitment needed for service work.

Common Problems This Part Can Address

• Squealing or chirping from the accessory drive belt area
• Worn pulley surfaces that affect belt tracking
• Belt noise caused by pulley wear or rough rotation
• Service replacement for a damaged A/C belt idler pulley
• Restoration of proper belt routing on Toyota accessory drive systems

Installation Notes and Tips

Verify belt routing and pulley alignment before installation. Inspect the accessory belt, tensioner, and adjacent pulleys for wear at the same time, especially on high-mileage Toyota 4Runner, Tacoma, FJ Cruiser, and Tundra models. Confirm the application by matching the vehicle year, model, and A/C belt configuration to the listed fitment.

Quality Assurance

GMB states that this pulley is manufactured to meet or exceed OEM specifications, supporting consistent fit and service performance for the listed Toyota applications.