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Genuine Porsche parts diagram
Genuine Porsche parts diagram
Genuine Porsche parts diagram
Genuine Porsche parts diagram

GENUINE PORSCHE Drive Belt Tensioner - 99611522172

GENUINE PORSCHE
Availability:
5+ in stock, ready to be shipped

Ships same or next business day

SKU 99611522172
$383.04 - $383.04
$383.04
$383.04 - $383.04
$383.04
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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GENUINE PORSCHE

Drive Belt Tensioner

This product also goes by these part numbers: 996 115 221 72, 99611522172

This part also goes by the following cross reference.

Cross Reference Part Number: 99611522172

Fits These Vehicles 14 applications
Porsche
Make Model Engine Years
Porsche 911GT3 3.6H6 2004–2005
Porsche 911GT3 3.6H6 2007–2009
Porsche 911GT3 3.8H6 2010–2011
Porsche 911Turbo 3.6H6 2001–2005
Porsche 911Turbo 3.6H6 2007–2009
Porsche 911Turbo S 3.6H6 2005–2005
Porsche 911GT2 3.6H6 2002–2005
Porsche 911GT2 3.6H6 2008–2009
Porsche 911GT3 RS 3.6H6 2007–2008
Porsche 911GT3 RS 3.8H6 2010–2011
Porsche 911GT3 RS 4.0 4.0H6 2011–2011
Porsche 911GT2 3.6H6 2006–2007
Porsche 911GT3, Turbo 3.6H6 2006–2006
Porsche 911Turbo S 3.6H6 2006–2009

Fitment data last updated: 2026-10-03

Fits 14 vehicle applications Check vehicle fitment before ordering View fitment

About this Belt Tensioner & Idler Pulley

The GENUINE PORSCHE 99611522172 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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