| Sprinter II 2014-2016 OM651 4 Cyl ONLY 
 
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	The decoupling pulley is furnished with the new alternator. This unit is a new, original Valeo unit  and is NOT remanufactured.  It is the exact same unit sold at a Mercedes dealer.
 
 To check the integrity of your 
alternator pulley, simply remove the belt and place a screwdriver into 
the front of the alternator cooling fan to stop the armature from 
rotating.  Then turn the pulley by hand.  If it moves one direction but,
 not the other, it is functional.  If it will not rotate at all, it has 
failed.
 
 
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