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IMPROVED! This specialty 33 spline bit (official tool No. 3400) is supplied with a 17 mm hex body for use in your box wrench. Applications include MK-4 Golf®/Jetta®/New Beetle® alternators freewheeling pulley hubs. NEW KIT includes new special compact M10 triple square 12 point bit and the T50 6 lobe bit that are used to reach down the center of the serrated bit and are EXTRA SHORT to work with the engine in the car in most applications.

Not for impact tool usage.

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7 Unit(s) in Stock
  • Golf TDI MkIV (A4 chassis) w/ ALH Engine (1999-2003)
  • Jetta TDI MkIV (A4 chassis) w/ ALH Engine (1999-2003)
  • Jetta TDI MkV (A5 chassis) w/ 1.9 BRM Engine (2005-2006)
  • Jetta Wagon TDI (A4 chassis) w/ ALH Engine (2002-2003)
  • New Beetle TDI (A4 chassis) w/ ALH Engine (1998-2003)

Works EXACTLY as advertised. There was a little card in the package to remind you which way to turn what. ...


This works great, and saves you from removing the alternator. If you're belt tensioner breaks...this will fix the alternator clutch, ...


Frequently Asked Questions

For ALH engines we recommend the Metalnerd version because it is possible (though hard) to replace the pulley with the alternator still in the car.
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