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Pulley-Alternator (Decoupling)  2007-2014
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Alternator Pulley (Decoupling) 3.0L V6 2007-2017

Freewheel Clutch/Pulley for alternator. This unit is standard equipment on all Sprinter alternators.
THIS IS A CRITICAL COMPONENT OF THE SERPENTINE BELT SYSTEM AND A KNOWN CAUSE OF BREAKAGE PROBLEMS 

IT IS COMMON FOR THIS DECLUTCHING PULLEY TO FAIL, LONG BEFORE THE ALTERNATOR WEARS OUT.
A special tool is required for installation of this unit and are not usually replaceable outside a repair facility.  
If you are purchasing a new alternator, you will not need to buy this, as the alternator is furnished with a new pulley.
 
Dealer List  $479.00
Europarts Price:
$69.97
Savings:$409.03 (85%)
Qty: 
 
Detailed Description
Sprinter II 2007-2017 3.0L V6
This is the identical OEM pulley sold at a franchise Dodge, Freightliner or Mercedes dealer.

Fits all Valeo alternators...180 and 220 Amp

If you have had problems with snapped serpentine belts or a broken belt tensioner arm or roller, this declutching pulley has most likely failed.  When operating correctly, this unit has a one-way clutch to minimize belt flutter and therefore, stress.  Over time, this pulley will seize, thereby losing its one-way decoupling action.

Video demonstration of why this device is a critical component:

http://www.youtube.com/watch?v=4EXYP1CmL9Q

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