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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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Macht Schnell - Corporate Logo
T#:593749
Part#: 10.00.011
Ships in 6 Business Days
$ 349.00 USD
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$ 349.00 USD
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Free additional power to your M3’s rear wheels without sacrificing or compromising your BMW’s reliability. Machined from 6061-T6 aerospace aluminum, Macht Schnell Performance Underdrive Pulleys are strong as well as lightweight to limit parasitic drag from the accessories within a moderate level for maximum performance on or off the track. After machining and engraving, pulleys are then T3 hard anodized for additional strength, anti-corrosion & wear resistance. Our DualDrive design replaces the Crank Accessory & Power Steering Pulleys, resulting in an additional 9-14 HP and 7-9ft. lbs TQ gain for the M3. Gains are due to a reduction in power required to turn accessories; an increase in accessories lifespan due to lower speed will also result. All factory harmonics/balancing are undisturbed. Macht Schnell Performance Underdrive Pulleys have no negative effect on accessory operation and comes fully equipped with new belts. Already have this kit and need new belts? See T#14491 and T#14489 Performance Underdrive Pulleys Features: DualDrive design allows maximum performance, with minor effect on accessory speed Proper cooling temperatures are retained at proper levels on or off the track Maintains proper alternator speed, allowing sustained levels to sensitive control modules Machined from 6061-T6 aerospace aluminum T3 Hard-Anodized for maximum strength and corrosion/wear resistance No affects to crankshaft dampening or harmonics Simple bolt-on installation
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Vargas Turbo Technologies - Corporate Logo
T#:558795
Part#: VTT-CRANKHUB-1
Ships in 6 Business Days
$ 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 Oct 15, 2026
$ 83.99 USD
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$ 83.99 USD
Free Shipping
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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Vargas Turbo Technologies - Corporate Logo
T#:7292042
Part#: VTT-N54-PSN54
Ships in 2 Business Days
Starting at $ 56.99 USD
Free Shipping on orders $49 and up
Starting at $ 56.99 USD
Free Shipping on orders $49 and up
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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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
Limited Qty Sale
Free Shipping on orders $49 and up
$ 74.99

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

$ 61.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
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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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
Free Shipping on orders $49 and up
$ 41.99 USD
Free Shipping on orders $49 and up

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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Febi - Corporate Logo
T#:587397
Part#: 11288570439
Ships in 6 Business Days
$ 140.99

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

$ 122.99 USD
Free Shipping
$ 122.99 USD
Free Shipping
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
Free Shipping on orders $49 and up
$ 48.99 USD
Free Shipping on orders $49 and up
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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Febi Water Pump Pulley - E39, E46, E53, E60, E83, Z3, Z4
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Febi - Corporate Logo
T#:373752
Part#: 11511436590
In Stock at Vendor
$ 40.99 USD
Free Shipping on orders $49 and up
$ 40.99 USD
Free Shipping on orders $49 and up
A common failing piece due to the plastic design.
Febi Water Pump Pulley - E34, E36, E39, Z3
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Febi - Corporate Logo
T#:381779
Part#: 11511730554
In Stock at Vendor
$ 39.51 USD
Free Shipping on orders $49 and up
$ 39.51 USD
Free Shipping on orders $49 and up
Located behind the fan blade, fan clutch bolts to this pulley
Febi - Corporate Logo
T#:381781
Part#: 11517504077
In Stock at Vendor
$ 42.99

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

$ 33.38 USD
Free Shipping on orders $49 and up
$ 33.38 USD
Free Shipping on orders $49 and up
Replace your cracked or broken pulley


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
Free Shipping
$ 68.99 USD
Free Shipping

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#:382330
Part#: 11237568345
Ships on Oct 15, 2026
$ 270.99 USD
Free Shipping
$ 270.99 USD
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Drives accessories; located at the end of the crankshaft
Febi - Corporate Logo
T#:381684
Part#: 11281427252
Ships on Oct 15, 2026
$ 78.99 USD
Free Shipping on orders $49 and up
$ 78.99 USD
Free Shipping on orders $49 and up

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#:382335
Part#: 11281748131
Ships on Oct 15, 2026
$ 31.99 USD
Free Shipping on orders $49 and up
Replacement is recommend with every belt service

Febi - Corporate Logo
T#:381700
Part#: 11287512758
Back Ordered
$ 75.99 USD
Free Shipping on orders $49 and up
$ 75.99 USD
Free Shipping on orders $49 and up
Complete tensioner assembly with roller
Febi Tensioner Pulley - E90
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Febi - Corporate Logo
T#:382341
Part#: 11287807021
In Stock at Vendor
$ 101.99

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

$ 88.99 USD
Free Shipping
$ 88.99 USD
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Does not include tensioner

Lower Idler Pulley
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Febi - Corporate Logo
T#:374230
Part#: 11287557851
In Stock at Vendor
$ 64.99 USD
Free Shipping
$ 64.99 USD
Free Shipping
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
Free Shipping
$ 122.95 USD
Free Shipping
This is the main belt tensioner for A/C, Alternator, and power steering.

OEM Febi Accessory Belt Tensioner Assembly - BMW N20 2.0L
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Febi - Corporate Logo
T#:38419107
Part#: 11287594969
In Stock at Vendor
$ 75.99 USD
Free Shipping on orders $49 and up
This is the main belt tensioner for the accessory belt.

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
Free Shipping on orders $49 and up
$ 64.99 USD
Free Shipping on orders $49 and up
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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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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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.


BMW idler pulley
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Febi - Corporate Logo
T#:38385319
Part#: 11287589886
Special Order: No Guaranteed ETA
$ 63.99 USD
$ 63.99 USD
If your accessory belt idler pulley shows signs of excessive wear—such as wobbling, grinding, or squealing from a failing bearing—it should be replaced before it leads to belt failure. When replacing your idler pulley, it's a good time to inspect other belt drive components like the tensioner and belt for wear. Turner Motorsports offers a full selection of belts, tensioners, pulleys, and related hardware to keep your BMW’s belt drive system running smoothly.
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Febi - Corporate Logo
T#:381702
Part#: 11287530314
Special Order: No Guaranteed ETA
$ 112.99 USD
Free Shipping
$ 112.99 USD
Free Shipping
Complete tensioner assembly
BMW Tensioner Assembly
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Febi - Corporate Logo
T#:38419072
Part#: 11287582761
Special Order: No Guaranteed ETA
$ 122.99 USD
$ 122.99 USD
Genuine BMW Mechanical Belt Tensioner - This item fits the following BMW Chassis: F10,F25 X3 Fits BMW Engines including: N52N

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.
BMW auxiliary belt
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Febi - Corporate Logo
T#:16242197
Part#: 11281437475
Special Order: No Guaranteed ETA
$ 18.99 USD
$ 18.99 USD