They are the OEM supplier to Mercedes Benz and this unit is identical to those sold at a franchise dealer.
It IS NOT a Chinese knock-off part.
AKA: Harmonic Balancer
Only for models with optional second A/C compressor
This unit has grooved surfaces for both a serpentine belt and a V-belt.
Replace crankshaft bolt at same time as pulley. There are two different versions of this bolt.
See both version of the bolts and woodruff keys shown below.
Detailed Description
Sprinter 2002-2006
This is ONLY for those vehicles with accessory rear (roof-mounted) A/C having a 2nd A/C compressor, which is driven by a second belt, a V-belt.
