GMB 470-9050 Engine Timing Idler

Engine Timing Idler for Toyota and Lexus

GMB 470-9050 is an engine timing idler built for Toyota and Lexus applications that call for a precise OE-style replacement. Manufactured to meet or exceed OEM specifications, it is a practical choice for restoring proper belt routing and timing system operation on a wide range of V8-equipped vehicles.

Compatible With Toyota Tundra, Toyota Sequoia, Toyota 4Runner, Lexus GX470, Lexus LX470, Lexus LS430, and related applications across 1990-2010 model years, this timing idler is built around durable metal construction and a pulley design suited for serpentine and V-belt systems.

Key Features

• GMB 470-9050 engine timing idler for OE-style replacement
• Built to meet or exceed OEM specifications
• Metal pulley construction for dependable service
• Serpentine and V-belt pulley type
• Single-groove pulley design
• Cross-references Gates T42031 for the same application

Detailed Description

The GMB 470-9050 timing idler is engineered for vehicles that require accurate belt tracking and stable pulley operation in the engine timing system. Its metal pulley construction supports consistent performance in demanding engine environments, while the single-groove layout and serpentine/V-belt compatibility make it suitable for the listed Toyota and Lexus platforms. This part number, 470-9050, is a direct-fit service option for owners replacing a worn or noisy idler on models such as the Toyota Tundra, Toyota Sequoia, and Lexus LX470.

This part cross-references Gates T42031 for the same application.

What It Helps Address

• Noise from a worn or rough idler pulley
• Belt tracking issues caused by pulley wear
• Timing system service on high-mileage engines
• Replacement of an OE-style idler with matching specifications
• Restoration of proper pulley alignment in serpentine or V-belt setups

Installation Notes and Tips

Verify the pulley style, groove count, and belt routing before installation. Confirm fitment by year, make, and model, since GMB 470-9050 is used across multiple Toyota and Lexus applications including 2000-2009 Toyota Tundra, 2001-2009 Toyota Sequoia, 2003-2009 Lexus GX470, and 1998-2007 Lexus LX470. Inspect the surrounding belt path and related components during service to help ensure the new idler operates smoothly.

Quality Assurance

GMB states that this component is manufactured to meet or exceed OEM specifications, supporting OE-level fit and function for the listed applications. Part number 470-9050 is intended for buyers seeking a replacement timing idler with factory-style construction and application coverage.

• Fits 2002-2010 Lexus SC430, N/A
• Fits 2003-2009 Lexus GX470, N/A
• Fits 2003-2009 Toyota 4Runner, N/A
• Fits 2001-2009 Toyota Sequoia, N/A
• Fits 2000-2009 Toyota Tundra, N/A
• Fits 2001-2007 Lexus GS430, N/A
• Fits 1998-2007 Lexus LX470, N/A
• Fits 1998-2007 Toyota Land Cruiser, N/A
• Fits 2001-2006 Lexus LS430, N/A
• Fits 1998-2000 Lexus GS400, N/A
• Fits 1990-2000 Lexus LS400, N/A
• Fits 1992-2000 Lexus SC400, N/A