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BMW Drive Belts & V-Belts

Your BMW's drive belts are wear items, and will degrade and crack over time. Don't wait until you have a belt failure... don't get stranded! Replacing your BMW's belts, such as the alternator belt, power steering belt, air conditioning AC belt, or serpentine belt is a low cost insurance policy to preventing a break down -- or worse, engine damage. We recommend checking your belts every 10,000 miles. If your belts have excessive cracks, dry rot, missing teeth and/or grooves, are cause noise, it's time for new ones.

While also inspecting your serpentine belts, also check for wear or resistance in the pulleys. The tensioner pulley and deflection pulley are the primary sources for belt squealing. The rubber-isolated pulleys can also break apart, leading to total belt failure. We sell the tensioner and deflection pulleys for the M50 engine family used in the E34, E36, E39, E46, X5, Z3, and Z4.

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Vargas Turbo Technologies - Corporate Logo
T#:558795
Part#: VTT-CRANKHUB-1
In Stock
$ 889.99 USD
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$ 889.99 USD
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Under certain conditions, the N55 crank hub likes to spin, without warning and even when the engine is in perfect health. The engineers at Vargas saw and dealt with this problem time and again, and they saw fit to do something about it. This hub uses a proprietary "Spline Lock" technology that uses high tolerance machined splines which press into the crank, and positively lock the hub to the crank. The splines are machined in such a way that rotational forces drive the hub, and splines deeper into the crank meaning when the hub encounters a situation that would normally slip a stock hub the splined hub is driven into the crank to keep it in place (much like a splined extractor). Features: Installs the same as a stock hub Does NOT require the crank to be drilled for pins Manufactured from Harndered 17-4SS We suggest the Crank Hub System ONLY be installed by a qualified shop or technician. Timing tools are 100% REQUIRED if installed improperly engine damage may occur. DISCLAIMER: VTT and ECS are not responsible for any engine damage caused by improper installation, or misuse of the crank hub solution.
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Vargas Turbo Technologies - Corporate Logo
T#:638889
Part#: VTT-CRANKGUARD
In Stock
Starting at $ 89.99 USD
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Starting at $ 89.99 USD
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It is a well-known issue on the BMW N54/55 platforms that your serpentine belt can fail for various reasons. When this happens, there is a high chance of the belt getting sucked behind the front damper pulley and then being pushed past the crank seal into your oil pan. From there it can get sucked into the oil pick up causing total engine failure. Even if you do not lose the engine, it is a COSTLY repair to remove the sub-frame and drop the oil pan to remove the belt. The best way to combat this is to watch for oil leaks and keep up on your maintenance. BUT, even with those preventative measures, pre-mature belt failure can occur. This crank seal guard installs over your front crank seal and will keep the belt from being sucked in if a belt failure does occur. This is a cheap way to ensure you do not end up having to replace your motor from oil starvation due to an ingested belt. Vargas' seal is different from those already on market in two major ways. Firstly, it is not offensively priced. Secondly, it is 100% billet with no welds on the tabs to break, no cheap bent thin steel pieces. 100% Billet 6061-T6 aluminum, anodized black for long-term corrosion resistance. Crank Seal Guard includes: One VTT Billet N54/55 Crank Seal Guard Two extended 12.9 Grade bolts, and two stainless washers We highly recommend you install WITH a crank bolt capture at the same time, as you have to remove the damper anyway. Then you will get the benefit of helping eliminate the dreaded spun crank hub and the crank seal issue
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Febi - Corporate Logo
T#:363804
Part#: 11287838797
Ships on Nov 11, 2026
$ 83.99 USD
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$ 83.99 USD
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The Hydraulic Alternator Belt Tensioner is exposed to a lot of dirt, salt, and other debris due to its front lower location. This can cause the tensioner to seize and not allow the belt tensioner to adjust. Replace your belt tensioner with this OEM high quality hydraulic tensioner for many years of reliable operation to come.
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Bremmen Parts - Corporate Logo
T#:32350850
Part#: 11287557851
In Stock
Sale - Save 15% $ 27.99

This product was last offered at the strikethrough price on
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$ 23.79 USD
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Bremmen Parts - Corporate Logo
T#:32350851
Part#: 11288604266
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05-03-2026

$ 48.59 USD
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$ 51.99

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$ 48.59 USD
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Bremmen Parts - Corporate Logo
T#:29101657
Part#: 11287563927
In Stock
Sale - Save 17% $ 69.99

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05-03-2026

$ 57.79 USD
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$ 69.99

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$ 57.79 USD
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Bremmen Parts - Corporate Logo
T#:32450133
Part#: 11288570439
In Stock
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This product was last offered at the strikethrough price on
05-03-2026

$ 75.06 USD
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$ 75.06 USD
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Bremmen Parts - Corporate Logo
T#:26305073
Part#: 11287556251
In Stock
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07-14-2026

$ 23.99 USD
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Bremmen Parts - Corporate Logo
T#:26305100
Part#: 11281433571
In Stock
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05-03-2026

$ 47.32 USD
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Febi - Corporate Logo
T#:12943
Part#: 11281717210
In Stock
$ 74.99

This product was last offered at the strikethrough price on
05-02-2026

$ 61.99 USD
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$ 74.99

This product was last offered at the strikethrough price on
05-02-2026

$ 61.99 USD
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For Air Conditioning A/C Belt

Hydraulic Belt Tensioner for E36, E39, Z3 6-cyl models. This is the oil-filled tensioner that keeps the A/C belt in the proper tension. Over time the piston seals inside allow fluid to leak out. The tensioner becomes frozen or inoperable. Replacement is the best corrective action to take. This can be done during any belt or pulley service or anytime the fan is off the engine.
When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1997-6/1998 E39 BMW 528i
1997-1999 Z3 BMW Z3 2.3 Z3 2.8
1998-2000 Z3 BMW M Roadster M Coupe
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Vargas Turbo Technologies - Corporate Logo
T#:7292042
Part#: VTT-N54-PSN54
Ships in 2 Business Days
Starting at $ 56.99 USD
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Starting at $ 56.99 USD
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Vargas has introduced their new Billet Power Steering pulleys for the N54 engine! A well-known issue with the N54 with Hydraulic power steering is the plastic pulley either hitting the subframe, or breaking on its own. This can result in the belt to be ejected from the pulley, and leave you stranded with no serpentine belt. This also increases the chance of sucking the belt into the engine through the front seal. Put an end to the dreaded plastic PS pulley issues with the VTT 100% Billet Aluminum PS pulley. These are constructed from 6061-T6 aluminum and anodize in one of 4 colors (Black, Red, Blue, and Clear) for a great look, and long-lasting finish. These weigh 11oz, very close to the weight of a stock pulley, and are lighter than the cast aluminum versions on the market.
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Bremmen Parts - Corporate Logo
T#:32450136
Part#: 11288673720
In Stock
Sale - Save 10% $ 27.99

This product was last offered at the strikethrough price on
05-03-2026

$ 25.19 USD
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$ 27.99

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$ 25.19 USD
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Active Autowerke Power Pulley Kit - E9x M3
For vehicles with production date 2007-5/2008
Active Autowerke - Corporate Logo
T#:397285
Part#: 13-001
Ships in 4 Business Days
5% off MSRP $ 399.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 379.99 USD
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5% off MSRP
$ 399.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 379.99 USD
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Easy to install - reduces parasitic losses from belt driven auxiliary components. Engine crankshaft pulley remains the same, this modification simply unleashes untapped potential from your vehicle. Expect to see gains around 10 RWHP from your S65. All BMW power pulleys included, including alternator, water pump, and power steering pulleys.
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Bremmen Parts - Corporate Logo
T#:32350878
Part#: 11287594969
In Stock
Sale - Save 15% $ 47.99

This product was last offered at the strikethrough price on
06-18-2026

$ 40.79 USD
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$ 47.99

This product was last offered at the strikethrough price on
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$ 40.79 USD
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Bremmen Parts - Corporate Logo
T#:32450132
Part#: 11287549873
In Stock
Sale - Save 20% $ 85.99

This product was last offered at the strikethrough price on
05-03-2026

$ 68.54 USD
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$ 85.99

This product was last offered at the strikethrough price on
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$ 68.54 USD
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Bremmen Parts - Corporate Logo
T#:39497969
Part#: 11287530314
In Stock
Sale - Save 21% $ 54.99

This product was last offered at the strikethrough price on
05-03-2026

$ 43.24 USD
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$ 54.99

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$ 43.24 USD
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This tensioner keeps the belt for the alternator, power steering, and air conditioning taut to provide maximum performance of each system.

MINI R56 Drive Wheel for Water Pump
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Febi - Corporate Logo
T#:591822
Part#: 11517619020
In Stock
$ 50.99

This product was last offered at the strikethrough price on
02-16-2026

$ 41.99 USD
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$ 41.99 USD
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Upgrade your vehicle's performance with the Mini Drive Wheel/Pulley from FEBI, the trusted OES supplier. Designed to mount to the water pump and seamlessly spin it via the drive belt, this essential component ensures optimal functioning of your vehicle's cooling system. It's a reliable replacement for worn-out or damaged parts, offering enhanced durability and efficiency. Invest in FEBI's Mini Drive Wheel/Pulley for a smoother ride and peace of mind on the road.

  • Enhances vehicle performance
  • Reliable replacement for worn-out parts
  • Ensures optimal functioning of the cooling system
  • Manufactured by FEBI, a trusted OES supplier
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Bremmen Parts - Corporate Logo
T#:36913367
Part#: 11281717210
In Stock
Sale - Save 21% $ 66.99

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05-03-2026

$ 53.03 USD
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$ 66.99

This product was last offered at the strikethrough price on
05-03-2026

$ 53.03 USD
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Also known as a shock damper, the accessory belt tensioner is used to tension the air conditioning compressor belt. This ensures proper contact with the belt drive pulleys and prevents premature wear from improper tension.

If your belt is wearing prematurely or has excess slack, your belt tensioner may be to blame. Replace it with this high-quality Bremmen Parts tensioner to ensure proper tension and air conditioning functionality.

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Bremmen Parts - Corporate Logo
T#:34080699
Part#: 11287578674
In Stock
Sale - Save 21% $ 28.99

This product was last offered at the strikethrough price on
05-03-2026

$ 22.84 USD
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$ 28.99

This product was last offered at the strikethrough price on
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$ 22.84 USD
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Bremmen Parts - Corporate Logo
T#:32350880
Part#: 11287512758
In Stock
Sale - Save 20% $ 50.99

This product was last offered at the strikethrough price on
05-03-2026

$ 40.79 USD
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$ 50.99

This product was last offered at the strikethrough price on
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$ 40.79 USD
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Febi - Corporate Logo
T#:587397
Part#: 11288570439
Ships in 7 Business Days
$ 140.99

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

$ 121.99 USD
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$ 121.99 USD
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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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OEM Febi Idler Pulley - Multiple BMWs
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Febi - Corporate Logo
T#:382342
Part#: 11287841228
In Stock
$ 48.99 USD
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$ 48.99 USD
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This is an OEM Febi Upper Idler Pulley, also known as the roller pulley or deflection pulley. The upper and lower 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).
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Bremmen Parts - Corporate Logo
T#:34080698
Part#: 11287578675
In Stock
Sale - Save 21% $ 27.99

This product was last offered at the strikethrough price on
05-03-2026

$ 22.02 USD
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Sale - Save 21%
$ 27.99

This product was last offered at the strikethrough price on
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$ 22.02 USD
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Febi Water Pump Pulley - E39, E46, E53, E60, E83, Z3, Z4
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:373752
Part#: 11511436590
Ships in 1-2 days
$ 40.99

This product was last offered at the strikethrough price on
08-13-2026

$ 24.99 USD
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$ 24.99 USD
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A common failing piece due to the plastic design.


Bremmen Parts - Corporate Logo
T#:32450135
Part#: 11287790448
In Stock
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05-03-2026

$ 21.21 USD
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$ 26.99

This product was last offered at the strikethrough price on
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$ 21.21 USD
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Crank Pulley With Dampener
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Febi - Corporate Logo
T#:591627
Part#: 11237562801
In Stock
$ 97.71

This product was last offered at the strikethrough price on
05-11-2026

$ 68.99 USD
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$ 68.99 USD
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Smooth out rotational vibrations and maintain optimal engine performance with this pulley-driven unit for your Mini. Over time, wear and drying out can lead to unusual noises near the passenger's side oil pan, indicating the need for replacement. Ensure seamless operation by replacing this unit when necessary, and don't forget to change the hex bolts for comprehensive maintenance.

  • Reduces rotational vibrations for smoother engine operation
  • Prevents unusual noises near the passenger's side oil pan
  • Ensures optimal engine performance and longevity
  • Replacement recommended to maintain engine health
  • Hex bolts replacement advised for thorough maintenance
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Febi - Corporate Logo
T#:381781
Part#: 11517504077
Ships in 1-2 days
$ 45.99

This product was last offered at the strikethrough price on
08-13-2026

$ 30.03 USD
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$ 30.03 USD
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Replace your cracked or broken pulley

Febi Water Pump Pulley - E34, E36, E39, Z3
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Febi - Corporate Logo
T#:381779
Part#: 11511730554
Ships in 2 Business Days
$ 39.51

This product was last offered at the strikethrough price on
08-13-2026

$ 28.25 USD
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$ 28.25 USD
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Located behind the fan blade, fan clutch bolts to this pulley

Febi - Corporate Logo
T#:382330
Part#: 11237568345
Ships on Nov 11, 2026
$ 270.99 USD
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$ 270.99 USD
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Drives accessories; located at the end of the crankshaft
Febi - Corporate Logo
T#:382335
Part#: 11281748131
Ships on Nov 11, 2026
$ 31.99 USD
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Replacement is recommend with every belt service

Febi - Corporate Logo
T#:381684
Part#: 11281427252
Ships in 2 Business Days
$ 80.99 USD
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$ 80.99 USD
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This tensioner is for either the Water Pump or Alternator on cars with the mechanical belt tensioner system. Please check to ensure your car does not have the hydraulic tensioner. This tensioner comes with the pulley assembly.

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!

Only for cars with Mechanical belt tensioner systems.

This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
1991-1995 E34 BMW 525i
1997-2003 E39 BMW 525i 528i 530i
2004-2005 E60 BMW 525i 530i
2004-2006 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i
1997-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2003-2005 Z4 BMW Z4 2.5i Z4 3.0i

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Febi - Corporate Logo
T#:381700
Part#: 11287512758
Ships on Nov 11, 2026
$ 75.99 USD
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$ 75.99 USD
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Complete tensioner assembly with roller

Bremmen Parts - Corporate Logo
T#:32350879
Part#: 11287615130
In Stock
Sale - Save 22% $ 22.99

This product was last offered at the strikethrough price on
05-03-2026

$ 17.94 USD
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$ 22.99

This product was last offered at the strikethrough price on
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$ 17.94 USD
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Bremmen Parts - Corporate Logo
T#:30629659
Part#: 11281748131
In Stock
Sale - Save 19% $ 18.99

This product was last offered at the strikethrough price on
05-03-2026

$ 15.29 USD
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Sale - Save 19%
$ 18.99

This product was last offered at the strikethrough price on
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$ 15.29 USD
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This pulley is mounted along with the hydraulic belt tensioner but can be replaced on its own. It is used for the main drive belt on the M50-M54 family engines (M50, M50TU, M52, S52, M52TU, M54, M56, and S54 engines). This is the same belt that covers the water pump/alternator/power steering systems. Replacement is a very easy procedure (requires fan removal) and will have your engine purring in no time. Belt replacement is strongly recommended at the same time. If you have a mechanical belt tensioner, the pulley can only be replaced with a new tensioner.

This high-quality replacement from Bremmen Parts is designed for exact fitment on your BMW. Whether you're looking to complete much-needed preventative maintenance, or replacing a failed roller, choose this component from Bremmen Parts for a lasting repair.

If you need the hydraulic belt tensioner, click here.

This item is 70mm Diameter. Please check the diameter before ordering.

This tensioner pulley fits the following BMWs: 1991-1995 E34 525i (M50 engine) 1992-1999 E36 325i, 325is, 328i, 328is, 323is 1995-1999 E36 M3 (M3 3.0 & M3 3.2 liter) 1997-2003 E39 525i, 528i, 530i - Only for Hydraulic Tensioner 1999-2000 E46 323i, 323Ci, 328i, 328Ci - Only for Hydraulic Tensioner 2001-2005 E46 325i, 325Ci, 325xi, 330i, 330Ci, 330xi - Only for Hydraulic Tensioner 2001-2006 E46 M3 coupe & convertible - Only for Hydraulic Tensioner 2000-2006 X5 3.0 liter (E53 chassis) 2004 E60 525i, 530i (M54 engine) 1997-2002 Z3 & MZ3 2.5, 2.8, 3.0, M Roadster, M Coupe 2003-2009 Z4 M Coupe and Roadster

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Bremmen Parts - Corporate Logo
T#:30629656
Part#: 11287841228
In Stock
Sale - Save 22% $ 19.99

This product was last offered at the strikethrough price on
05-03-2026

$ 15.50 USD
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Sale - Save 22%
$ 19.99

This product was last offered at the strikethrough price on
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$ 15.50 USD
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Bremmen Parts - Corporate Logo
T#:26305076
Part#: 11287535860
In Stock
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This product was last offered at the strikethrough price on
05-03-2026

$ 16.99 USD
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$ 20.99

This product was last offered at the strikethrough price on
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$ 16.99 USD
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Bremmen Parts - Corporate Logo
T#:21078401
Part#: S6PK1425
In Stock
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This product was last offered at the strikethrough price on
05-03-2026

$ 10.36 USD
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$ 16.99

This product was last offered at the strikethrough price on
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$ 10.36 USD
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Accessory drive belts keep everything turning off of the crank pulley. Generators and water pumps both rely on this belt to keep everything working properly. If your drive belt is getting old, cracking, glazing, or squeaking, replace it.
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Lower Idler Pulley
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Febi - Corporate Logo
T#:374230
Part#: 11287557851
In Stock at Vendor
$ 64.99 USD
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$ 64.99 USD
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Keep your ultimate driving machine performing at its peak with this heavy-duty replacement belt deflection pulley from Febi.
Febi Accessory Belt Tensioner Assembly
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Febi - Corporate Logo
T#:373809
Part#: 11287563927
In Stock at Vendor
$ 122.95 USD
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$ 122.95 USD
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This is the main belt tensioner for A/C, Alternator, and power steering.

Febi Tensioner Pulley - E90
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Febi - Corporate Logo
T#:382341
Part#: 11287807021
Ships in 3 Business Days
$ 101.99

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

$ 88.99 USD
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$ 88.99 USD
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Does not include tensioner

OEM Febi Accessory Belt Tensioner Assembly - BMW N20 2.0L
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Febi - Corporate Logo
T#:38419107
Part#: 11287594969
Ships in 3 Business Days
$ 76.99

This product was last offered at the strikethrough price on
07-29-2026

$ 75.99 USD
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$ 75.99 USD
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This is the main belt tensioner for the accessory belt.
Bremmen Parts - Corporate Logo
T#:48780737
Part#: 11288625983
Ships in 9 Business Days
Sale - Save 7% $ 25.99

This product was last offered at the strikethrough price on
05-03-2026

$ 24.22 USD
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$ 25.99

This product was last offered at the strikethrough price on
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$ 24.22 USD
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Febi Mechanical A/C Belt Tensioner Assembly - BMW M52TU M54
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Febi - Corporate Logo
T#:38419099
Part#: 11281433571
Ships in 1-2 days
$ 64.99 USD
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$ 64.99 USD
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Keeping all of your belts tight is imperative to making everything in your vehicle functioning. If your A/C belt tensioner pulley is not keeping enough tension on your belt, your entire A/C system won't work as effectively. A usual sign that your tensioner needs replacing is if your belt keeps slipping causing the system to "squeal".
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Bremmen Parts - Corporate Logo
T#:54995068
Part#: 11287582946
Ships on Sep 28, 2026
New Item
$ 52.99 USD
$ 52.99 USD
Double roller tensioner

Bremmen Parts - Corporate Logo
T#:55030822
Part#: 11287838797
Ships on Sep 28, 2026
New Item
$ 59.99 USD
$ 59.99 USD

Bremmen Parts - Corporate Logo
T#:52164889
Part#: 12317560483
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New Item
Sale - Save 15% $ 44.99

This product was last offered at the strikethrough price on
05-03-2026

$ 38.24 USD
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Sale - Save 15%
$ 44.99

This product was last offered at the strikethrough price on
05-03-2026

$ 38.24 USD
Free Shipping on orders $49 and up

Is your BMW making a chirping or grinding noise at idle? The culprit is frequently a failing alternator decoupler pulley. Unlike a traditional solid pulley, this Overrunning Alternator Pulley (OAP) allows the alternator rotor to "freewheel" when engine speeds drop suddenly. This specialized function protects your BMW drive belt and belt tensioner from excessive snap-back, vibration, and "belt slap."

Prevent Catastrophic Engine Failure

Over time, the internal clutch mechanism can seize or slip, leading to accelerated wear or total serpentine belt failure. On BMW engines, a snapped belt can be ingested through the front main seal, causing catastrophic engine damage. Replacing this pulley is a cost-effective preventative maintenance step that restores smoothness to your accessory drive without the high cost of a complete alternator replacement.

Features & Benefits:

Lowers the load on the drive belt, tensioner, and AC compressor.
Stops "belt slap" and rhythmic chirping noises during deceleration and idle.
Direct Replacement with high-quality construction ensures perfect fitment and long-term durability.
Essential Maintenance for N52 engines

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Accessory Belt Tensioner Assembly
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Febi - Corporate Logo
T#:578360
Part#: 11288604266
Special Order: No Guaranteed ETA
$ 70.00 USD
Free Shipping
$ 70.00 USD
Free Shipping
Keep your N55 or S55-powered ultimate driving machine running at peak performance with this premium replacement automatic belt tensioner from Febi Bilstein.
Febi - Corporate Logo
T#:38452839
Part#: 11237516385
Special Order: No Guaranteed ETA
$ 251.99 USD
$ 251.99 USD
Every time the cylinders fire, torque is transferred into the crankshaft. The crankshaft deflects under this torque, which sets up vibrations when the torque is released. At certain engine speeds the torque imparted by the cylinders are in sync with the vibrations in the crankshaft, which results in a phenomenon called resonance This resonance causes stress beyond what the crankshaft can withstand, resulting in crankshaft failure. The accessory pulley acts as a balancer and prevents these vibrations from destroying your crankshaft.
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Febi - Corporate Logo
T#:55066632
Part#: 1004202
Special Order: No Guaranteed ETA
New Item
$ 154.99 USD
Free Shipping on orders $49 and up
This replacement crankshaft harmonic balancer from febi bilstein is designed to restore factory-level drivetrain refinement and protect your engine.
Febi - Corporate Logo
T#:56110333
Part#: 11238602800
Special Order: No Guaranteed ETA
New Item
$ 216.99 USD
Free Shipping on orders $49 and up
Maintain your BMW's smooth engine dynamics and accessory belt reliability with this OE-matching quality replacement crankshaft pulley from Febi Bilstein.