Dorman 419-142 Accessory Drive Belt Tensioner

Dorman 419-142 is an accessory drive belt tensioner assembly built to match the fit of the original equipment unit on specified Volkswagen and Audi applications. It is designed for serpentine belt systems where correct belt tension is needed to address belt slip, noise, or wear from fatigue.

Key Features

• OE-style replacement tensioner assembly for accessory drive belt systems
• Aluminum housing and aluminum pulley construction
• Serpentine belt application with smooth pulley design
• Clockwise rotation
• Hex bolt head design for serviceability
• Direct-fit replacement for select Volkswagen Jetta, Tiguan, Passat, Atlas, Atlas Cross Sport, Arteon, Golf, GTI, Beetle, Golf Alltrack, Golf SportWagen, and Audi TTS Quattro and S3 applications

Detailed Description

This Dorman accessory drive belt tensioner assembly, part number 419-142, is engineered for vehicles using a serpentine accessory drive belt. The aluminum housing and pulley help match the original equipment layout, while the smooth pulley and clockwise operation support proper belt routing on the specified applications. It cross-references Continental 49825 and Four Seasons 39397 for the same application. This part is also associated with OE number 06L903133F. Compatible vehicle coverage includes 2013-2025 Volkswagen Jetta, 2018-2024 Volkswagen Tiguan, 2014-2022 Volkswagen Passat, and select Audi TTS Quattro and S3 models, making it a relevant replacement for drivers searching for a Volkswagen Jetta belt tensioner or Audi S3 serpentine belt tensioner assembly.

What It Helps Address

• Serpentine belt slipping on the accessory drive system
• Belt noise caused by worn tensioner components
• Loss of proper belt tension from fatigue
• Replacement needs after a broken or worn original tensioner
• Service issues on Volkswagen and Audi accessory drive belt systems

Installation Notes and Tips

Verify the vehicles engine and belt routing against the listed fitment before installation. This tensioner uses a single mounting hole and a hex bolt head design, so confirm fastener access and mounting dimensions during service. Inspect the serpentine belt, pulleys, and related accessory drive components at the same time to avoid repeat repairs. For search accuracy, this part is commonly referenced as Dorman 419-142 accessory drive belt tensioner for Volkswagen Jetta, Tiguan, Passat, and Audi S3 applications.

Quality Assurance

Dorman designs this assembly to match original equipment fit on the specified vehicles and to meet OEM-style replacement expectations for the accessory drive belt system.