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GENUINE BMW Drive Belt Tensioner - 11-28-1-736-857

GENUINE BMW Drive Belt Tensioner - 11-28-1-736-857

GENUINE BMW
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5+ en stock, listo para ser enviado

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SKU 11-28-1-736-857
$277.93 - $277.93
$277.93
$277.93 - $277.93
$277.93
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 BMW

Drive Belt Tensioner

This product also goes by these part numbers: 11 28 1 736 857, 11281736857, 11-28-1-736-857

This part also goes by the following cross reference.

Cross Reference Part Number: 11281736857

Fits These Vehicles 11 applications
BMW
Make Model Engine Years
BMW 750iL 5.4V12 1995–1999
BMW 740iL 4.4V8 1996–1998
BMW 740i 4.4V8 1997–1998
BMW 540i 4.4V8 1997–1998
BMW 850Ci 5.4V12 1995–1997
BMW 840Ci 4.4V8 1996–1997
BMW 840Ci 4.0V8 1994–1995
BMW 740iL 4.0V8 1993–1995
BMW 740i 4.0V8 1993–1995
BMW 540i 4.0V8 1994–1995
BMW 530i 3.0V8 1994–1995

Fitment data last updated: 2026-06-30

Fits 11 vehicle applications Check vehicle fitment before ordering View fitment

About this Belt Tensioner & Idler Pulley

The GENUINE BMW 11-28-1-736-857 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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