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INA Drive Belt Idler Pulley 5320866100

INA Drive Belt Idler Pulley 5320866100

INA
Availability:
5+ in stock, ready to be shipped

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SKU 5320866100
$40.86 - $40.86
$40.86
$40.86 - $40.86
$40.86
CALIFORNIA WARNING

Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts.

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INA

Drive Belt Idler Pulley

This product also goes by these part numbers: 272 202 00 00, 2722020000, 5320866100

This part also goes by the following cross reference.

Cross Reference Part Number: 2722020000, 5320866100

Fits These Vehicles 24 applications
Mercedes-Benz
Make Model Engine Years
Mercedes-Benz G550 5.5V8 2009–2015
Mercedes-Benz S400 3.5V6 2010–2013
Mercedes-Benz SL550 5.5V8 2007–2009
Mercedes-Benz SL550 5.5V8 2011–2012
Mercedes-Benz GLK350 3.5V6 2010–2012
Mercedes-Benz GL550 5.5V8 2008–2012
Mercedes-Benz GL450 4.7V8 2007–2012
Mercedes-Benz C300 3.0V6 2008–2012
Mercedes-Benz SLK350 3.5V6 2005–2011
Mercedes-Benz SLK300 3.0V6 2009–2011
Mercedes-Benz S550 5.5V8 2007–2011
Mercedes-Benz R350 3.5V6 2006–2011
Mercedes-Benz ML550 5.5V8 2008–2011
Mercedes-Benz ML350 3.5V6 2006–2011
Mercedes-Benz E550 5.5V8 2007–2011
Mercedes-Benz E350 3.5V6 2006–2011
Mercedes-Benz CLS550 5.5V8 2007–2011
Mercedes-Benz C350 3.5V6 2006–2011
Mercedes-Benz CL550 5.5V8 2007–2010
Mercedes-Benz CLK550 5.5V8 2007–2009
Mercedes-Benz CLK350 3.5V6 2006–2009
Mercedes-Benz SLK280 3.0V6 2006–2008
Mercedes-Benz C280 3.0V6 2006–2007
Mercedes-Benz C230 2.5V6 2006–2007

Fitment data last updated: 2026-06-30

Fits 24 vehicle applications Check vehicle fitment before ordering View fitment

About this Belt Tensioner & Idler Pulley

The INA 5320866100 is part of the accessory drive that runs the alternator, A/C compressor and other components. The tensioner keeps the drive belt at the right tension and idler pulleys guide it, and their bearings wear over time.

Frequently asked questions

What does a belt tensioner do?

It applies constant pressure to the drive belt so it grips the pulleys without slipping, and it absorbs the belt's movement as engine speed changes. Idler pulleys guide the belt around its path.

What are the signs of a worn tensioner or idler pulley?

A squeal or chirp from the front of the engine, a rumbling or grinding bearing noise, a belt that flutters, jumps or wears unevenly, or a tensioner arm that bounces or has visible play.

What should I replace along with it?

Replace the drive belt at the same time, and consider replacing the other pulleys if they have similar mileage, since their bearings wear at a similar rate.

Can I replace a tensioner myself?

Usually, yes. Note or photograph the belt routing before removing it, release the tension with the correct tool, and check the new belt sits correctly in every pulley groove before starting the engine.

How do I make sure this belt tensioner or pulley fits my car?

Compare the part numbers listed on this page with the number on your old part or in your vehicle's parts catalog, and check the fitment information. If you are unsure, contact us with your VIN before ordering.

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