OVERVIEW
The 06L-903-137-A Genuine VW/Audi serpentine accessory belt transfers rotation from the engine’s accessory drive to the matching belt-driven components. Its longitudinal ribs engage the pulley grooves to transmit power while following the specified routing. Correct belt selection and a sound tensioner are both necessary for reliable accessory operation.
Technical details
- OEM number: 06L-903-137-A / 06L903137A.
- Part type: ribbed serpentine accessory drive belt.
- Source-photo identification: VW AG branding and the 06L 903 137 A number are visible on the belt.
- Quantity: one belt. Tensioner, idler pulleys and driven accessories are separate.
- Selection: match the belt number and the vehicle’s accessory-drive arrangement; do not choose by engine displacement alone.
Common reasons to replace
Replace a belt with damaged ribs, frayed edges, missing material, contamination or wear beyond the applicable inspection limit. Belt condition can deteriorate through service wear or damage from a faulty pulley. Follow the vehicle’s inspection schedule and condition-based replacement guidance.
Squealing, chirping or inconsistent accessory operation warrants inspection of the full drive. Check belt tracking, pulley alignment, the tensioner and driven components before treating a new belt as the complete repair. A seized pulley or worn tensioner can damage the replacement belt. If oil or coolant has reached the belt, find and repair the leak before completing the belt replacement.
Service notes
Follow the exact routing diagram and vehicle-specific procedure for releasing the tensioner. With the belt removed, inspect the pulley grooves and check the tensioner and idlers for the faults identified by the service procedure. Avoid damaging the ribs or contaminating the belt during installation.
Confirm that every rib is seated correctly, the belt tracks in the proper grooves and the tensioner has returned to its working position before starting the engine. Do not apply belt dressing as a substitute for diagnosing noise or correcting a drive fault.
Fitment
| Vehicle | Model years | Engine | Configuration | Application restrictions |
|---|---|---|---|---|
| Volkswagen Arteon | 2019–2023 | 2.0L turbocharged gasoline inline-4 | SE / SEL / SEL Premium; R-Line where offered; Verify VIN-specific accessory drive | Match VIN, installed belt number and accessory arrangement. Excludes diesel and six-cylinder engines. |
| Volkswagen Atlas | 2018–2023 | 2.0L turbocharged gasoline inline-4 | S / SE / SEL / SEL Premium; four-cylinder only; Verify VIN-specific accessory drive | Match VIN, installed belt number and accessory arrangement. Excludes diesel and six-cylinder engines. |
| Volkswagen Atlas Cross Sport | 2020–2023 | 2.0L turbocharged gasoline inline-4 | S / SE / SEL; R-Line where offered; four-cylinder only; Verify VIN-specific accessory drive | Match VIN, installed belt number and accessory arrangement. Excludes diesel and six-cylinder engines. |
| Volkswagen Golf | 2015–2018 | 1.8L turbocharged gasoline inline-4 | 1.8T trims only; Verify VIN-specific accessory drive | Match VIN, installed belt number and accessory arrangement. Excludes diesel and six-cylinder engines. |
| Volkswagen Golf Alltrack | 2017–2019 | 1.8L turbocharged gasoline inline-4 | S / SE / SEL; Verify VIN-specific accessory drive | Match VIN, installed belt number and accessory arrangement. Excludes diesel and six-cylinder engines. |
| Volkswagen Golf R | 2015–2019 | 2.0L turbocharged gasoline inline-4 | Base; Verify VIN-specific accessory drive | Match VIN, installed belt number and accessory arrangement. Excludes diesel and six-cylinder engines. |
| Volkswagen Golf SportWagen | 2015–2019 | 1.8L turbocharged gasoline inline-4 | 1.8T trims only; Verify VIN-specific accessory drive | Match VIN, installed belt number and accessory arrangement. Excludes diesel and six-cylinder engines. |
| Volkswagen GTI | 2015–2025 | 2.0L turbocharged gasoline inline-4 | S / SE / Autobahn; special editions where offered; Verify VIN-specific accessory drive | Match VIN, installed belt number and accessory arrangement. Excludes diesel and six-cylinder engines. |
| Volkswagen Jetta GLI | 2019–2025 | 2.0L turbocharged gasoline inline-4 | GLI S / Autobahn; anniversary editions where offered; Verify VIN-specific accessory drive | Match VIN, installed belt number and accessory arrangement. Excludes diesel and six-cylinder engines. |
| Volkswagen Tiguan | 2018–2024 | 2.0L turbocharged gasoline inline-4 | S / SE / SEL; R-Line / Premium where offered; Verify VIN-specific accessory drive | Match VIN, installed belt number and accessory arrangement. Excludes diesel and six-cylinder engines. |
| Audi A3 | 2015 | 2.0L turbocharged gasoline inline-four | 8V; Premium quattro sedan; Match original accessory belt routing | Accessory serpentine belt only; verify installed belt number, routing and single-belt-drive configuration. Excludes other engine and belt arrangements. |
| Audi S3 | 2022 | 2.0L turbocharged gasoline inline-four | 8Y; Prestige quattro sedan; single belt drive; Match original accessory belt routing | Accessory serpentine belt only; verify installed belt number, routing and single-belt-drive configuration. Excludes other engine and belt arrangements. |
| Audi A5 | 2018; 2020 | 2.0L turbocharged gasoline inline-four | B9; Premium Plus quattro Coupe; single belt drive; Match original accessory belt routing | Accessory serpentine belt only; verify installed belt number, routing and single-belt-drive configuration. Excludes other engine and belt arrangements. |
Confirm VIN, installed belt number and accessory routing before ordering. The table covers confirmed applications; other engine and model variants require separate verification.