Gates 39518 Accessory Drive Belt Tensioner Assembly

OE Automatic Belt Tensioner for Toyota and Lexus

The Gates DriveAlign Premium OE Automatic Belt Tensioner, part number 39518, is built for accessory drive belt systems that require precise belt control and stable pulley alignment. It is an OE Exact replacement made to match factory fit, form, and function for select Toyota Corolla, Toyota Corolla Cross, Lexus UX200, and Lexus UX250h applications.

Key Features

• DriveAlign Premium OE Automatic Belt Tensioner line from Gates
• OE Exact grade for factory-style fit and operation
• Thermoplastic tensioner body
• V-ribbed belt application with a smooth/backside pulley
• Single pulley design with 2.56 in. (65 mm) outside diameter
• 2 mounting holes for direct replacement fitment
• 17 mm bearing bore inside diameter
• Part number 39518 for easy identification

Product Details

Gates applies its OE system design experience to this automatic belt tensioner assembly, using rigid manufacturing tolerances to support accurate alignment and consistent belt tension. The thermoplastic construction and OE Exact grade specification are intended to match the original accessory drive belt system on the vehicle, helping maintain proper belt tracking and pulley contact. This part cross-references Dynomax 39518 for the same application.

Fits 2019-2022 Toyota Corolla, N/A. Fits 2022 Toyota Corolla Cross, N/A. Fits 2023 Toyota Corolla Cross, N/A. Fits 2019-2022 Lexus UX200, N/A. Fits 2019 Lexus UX250h, N/A.

What It Helps Address

• Belt squeal caused by weak or inconsistent tension
• Accessory drive belt flutter or vibration
• Improper belt tracking on the V-ribbed drive system
• Noise from a worn tensioner pulley or bearing
• Factory-style replacement needs during belt system service

Installation Notes and Tips

Verify belt routing, pulley alignment, and mounting-hole location before installation. Inspect the accessory drive belt, idler pulleys, and related components for wear at the same time, since a worn belt system can shorten the service life of the new tensioner. Confirm the application by year, make, and model before ordering; this part is listed for select Toyota Corolla and Corolla Cross models, plus Lexus UX200 and UX250h vehicles.

Quality Assurance

Gates manufactures this DriveAlign Premium OE Automatic Belt Tensioner to rigid tolerances and specifications so it matches OE fit, form, and function for the listed applications. Part number 39518 is built as an OE-style replacement for dependable service in the accessory drive belt system.