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Vw Alternator Pulley - Passat 2012-12 w/ 2.0L 4 Cylinder Diesel Engine
Product Part Number:
Product Information:

INA - VW Passat Alternator Freewheel Clutch Pulley (VAG OEM Supplier) (aka over-running alternator pulley)

This VW Passat alternator pulley is manufactured by INA Schaeffler Group Automotive. It is an official O.E. product and is the same alternator pulley that was fitted on your VW Passat from the factory! Blauparts partnership with an O.E. manufacturer means we can ensure absolute quality control to you through a direct supply chain. We offer the latest version of this pulley with the latest improved material revisions. Don't take a chance on low quality aftermarket alternator clutch pulleys being sold today. For complete piece of mind, you can purchase the highest quality official O.E. alternator pulley with confidence from Blauparts, your Audi VW specialist for over 25 years.

Related Product:
Alternator Pulley Tool Set (This tool set is needed to counter hold the alternator free-wheel drive pulley and shaft.)
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Please ensure your vehicle is listed below.
Vehicle Applications:
Passat Mk VI Sedan - 2WD w/ 2.0L 4 Cylinder 16 Valve TDI Diesel Engine
Technical Information:
Function: The function of the over-running alternator pulley is to disengage and dampen the alternator from the rotational energy of the engine. This allows the accessory belt system to run more smoothly, minimize belt noise, and variation. Also, rotational inertia is decreased, lowering drive belt slippage during deceleration and hard acceleration. Long term the over-running alternator pulley gives reduced stress on accessory drive belt components.

Diagnosing: 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.
How To Change or Replace the VW Over-Running Alternator Pulley
How To Diagnose a Noisy Chattering VW Over Running Alternator Pulley