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- Belts, Hoses & Pulleys /
- Pulleys /
- Idler Pulleys
Product Description
Belt Tensioner With Pulley + Idler Pulley Set (Total 4pcs)


Belts wear out over time, but if your belt is fraying and slipping, the issue is likely in the tensioner. Watch the tensioner to see if it is moving. It shouldn’t move much at all, but if you can see it move consistently and you have squeal, then the tensioner is shot.
You may have issues with your charging system or power steering as well. Typically, a worn tensioner will make noise along with the slipping, but if you have a check engine light for the charging system or the power steering system seems heavier than normal, checking the tension on the belt is a place to start.

Part Number:
2722000270
2722021419
2722021019
2722000070
2722020719
Package Include:
- 1 x Belt Tensioner With Pulley
- 2 x Idler pulleys
Replacement for:
2008-2012 C300
2006-2011 C350
2006-2011 E350
2007-2011 E550
2009-2011 G550
2008-2011 GL550
Replacement for:
2010-2011 GLK350
2007-2011 ML550
2007-2011 R350
2010-2011 S400
2007-2011 S550
2008-2011 SL550
Replacement for:
2009-2011 SLK300
2007-2011 SLK350
2007-2009 CL550
2006-2009 CLK350
2007-2009 CLK550
2007-2009 CLS550

$13.95 $13.95
$ 6 .99 $6.99
$30.42 $30.42
$ 13 .99 $13.99
$18.95 $18.95
$ 8 .99 $8.99
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$ 7 .99 $7.99