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Vw Jetta Serpentine Belt Tensioner - ALH TDI 99-04
Vw Serpentine Belt Tensioner Arm w/ Pulley - Jetta IV 1999-04 w/ 4 Cylinder Diesel Engine Code ALH
Product Part Number:
Product Information:
Purchasers with 2004 model year vehicles must confirm their engine code is ALH
INA Serpentine Belt Tensioner (VAG OEM Supplier)
(aka accessory belt tensioner)

This Volkswagen Jetta serpentine belt tensioner is manufactured by INA Schaeffler Group Automotive. It is an official OE Product and is the same serpentine tensioner that was fitted on your Volkswagen Jetta from the factory! Blauparts partnership with an OE manufacturer means we can ensure absolute quality control to you through a direct supply chain. We offer the latest version of this tensioner with the latest improved material revisions. Don't take a chance on low quality aftermarket tensioners being sold today. For complete piece of mind, you can purchase the highest quality OE Jetta belt tensioner with confidence from Blauparts your Audi VW specialist and save money compared to list prices! The OE part number reference for this tensioner is: 038 903 315C
Discounted Rate Fast FedEX Ground Shipping Applies (Typically 1-4 Days ) in the contiguous 48 U.S. states!
Ships Same Day (Orders Placed Before 3PM CST)
Please ensure your vehicle is listed below.
Vehicle Applications:
Jetta Mk IV Sedan - Models w/ 1.9L 4 Cylinder 8 Valve TDI Diesel Engine Code ALH
Jetta Mk IV Sedan - Models w/ 1.9L 4 Cylinder 8 Valve TDI Diesel Engine
Jetta Mk IV Wagon - Models w/ 1.9L 4 Cylinder 8 Valve TDI Diesel Engine Code ALH
Jetta Mk IV Wagon - Models w/ 1.9L 4 Cylinder 8 Valve TDI Diesel Engine
Technical Information:
Why Should I Replace My Serpentine Belt Tensioner? Customers may want to consider replacing the serpentine belt tensioner when performing VW timing belt service. The serpentine belt tensioner is easily accessible during the timing belt service and replacement during this time will save labor costs. Many times the bearing in the pulley will unexpectedly fail due to age and higher mileage. Also in some cases the tension spring or damper part of the tensioner can become weak giving the serpentine belt insufficient belt tension. We have seen serpentine belt tensioner failure as early 70,000 miles.

Diagnosing Serpentine Belt and Tensioner Problems: Accessory belt (aka serpentine belt) problems can be easily misdiagnosed, particularly those with an over-running alternator pulley. After hearing belt noises coming from the accessory belt area and upon visual inspection, many notice excessive belt and tensioner vibration and flapping. Oftentimes this is misdiagnosed as a bad belt and weak accessory belt tensioner spring. In most cases the excessive belt vibration and flapping is caused by the over-running alternator pulley going bad.