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Tensioner

The belt tensioner is responsible for keeping proper tension on the belt at all times and during all running conditions. When the tensioner ages, it loses some of the spring tension and can allow the belt to slip if left unchecked. Turner Motorsport carries Genuine BMW and high quality aftermarket options to get you back on the road in no time.
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Hydraulic Alternator Belt Tensioner Assembly
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:55030822
Part#: 11287838797
Ships in 4 Business Days
New Item
$ 59.99 USD
Free Shipping on orders $49 and up
Accessory Belt Tensioner Assembly
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:54995068
Part#: 11287582946
Ships in 4 Business Days
New Item
$ 52.99 USD
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Double roller tensioner
Febi - Corporate Logo
T#:56616370
Part#: 11288650740
Special Order: No Guaranteed ETA
New Item
$ 86.99 USD
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The Febi Bilstein Drive Belt Set offers a complete, high-grade replacement solution designed to tackle worn drive belts and weak tensioners simultaneously.

Vaico - Corporate Logo
T#:50346424
Part#: 11288580360
Special Order: No Guaranteed ETA
$ 68.99 USD
Free Shipping on orders $49 and up
$ 68.99 USD
Free Shipping on orders $49 and up
Accessory belt tensioners provide tension to the belt drive system, ensuring the belt is able to properly turn engine accessories without slipping. If your tensioner has failed, replace it with a brand-new unit to ensure proper water pump and alternator functionality.
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Ruville - Corporate Logo
T#:6738
Part#: 11287500560
Back Ordered
$ 38.99

This product was last offered at the strikethrough price on
05-07-2026

$ 31.99 USD
Free Shipping on orders $49 and up
$ 31.99 USD
Free Shipping on orders $49 and up

This is an OEM Ruville Idler Pulley, also known as the roller pulley or deflection pulley. The idler pulleys are known to be the primary sources for 'belt squealing'. The pulley is also encased in rubber which will crack over time. If left without service the rubber could fail completely, chucking the belt and leaving you stranded. Replacement is a very simple procedure and can be done anytime the fan is off the engine (belt replacement, water pump service, alternator replacement, etc).

OEM Schaeffler (INA, LuK, Ruville, & FAG) is an engineering company that focuses on high-performance, precision manufacturing. With their individual brands INA, Luk, and FAG providing exceptionally high quality parts directly to BMW, as well as countless other automotive companies, their history of reliability and variety of offered parts makes Schaeffler a go-to replacement parts provider for all of us here at Turner Motorsport.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!


This item fits the following BMWs:
BMW 5 Series - 540i, 535i
BMW X Series - X5 4.6is 4.4i

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