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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
In Stock
$ 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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Schwaben - Corporate Logo
T#:387204
Part#: 020023SCH01A
In Stock
Sale - Save 25% $ 67.99

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

$ 50.99 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 67.99

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

$ 50.99 USD
Free Shipping on orders $49 and up

Featuring a T60 Torx head, the belt tensioner found on the N54/N55 engine has exceptionally tight quarters. Use of this tool will allow access to the lock pin hole without excessive component removal, making belt removal and installation a much easier task.

This tool fits all N54/N55 powered BMW, including: 
2008+ E82 BMW 135i 1M Coupe 
2014+ F22 BMW M235i 
2006+ E90 BMW 335i 335xi 335i xDrive - Sedan 
2007+ E92 BMW 335i 335is 335xi 335i xDrive - Coupe 
2007+ E93 BMW 335i - Convertible 
2012+ F30 BMW 335i 335i xDrive - Sedan 
2013+ F32 BMW 435i 435i xDrive - Coupe 
2014+ F34 BMW 335i xDrive GT - Gran Tourismo 
2015+ F80 BMW M3 - Sedan 
2015+ F82 BMW M4 - Coupe 
2015+ F83 BMW M4 - Convertible 
2006-2010 E60 BMW 535i 535xi 535i xDrive 
2010+ F07 BMW 535i GT, 535i xDrive GT 
2011+ F10 BMW 535i 535i xDrive 
2012+ F13 BMW 640i 
2009+ F01 BMW 740i 740li 
2011+ F25 BMW X3 xDrive35i 
2007-2013 E70 BMW X5 xDrive35i 
2007-2014 E71 BMW X6 xDrive35i 
2009+ Z4 BMW Z4 sDrive35i Z4 sDrive35is 

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Schwaben - Corporate Logo
T#:23913945
Part#: 003582SCH01A
In Stock
Sale - Save 25% $ 65.99

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

$ 49.49 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 65.99

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

$ 49.49 USD
Free Shipping on orders $49 and up

BMW M57 Diesel Crank Pulley Turning Tool is essential for precise handling and adjustment of the crankshaft pulley in BMW diesel engines, including the N47, N57, and M57 models. This high-quality tool ensures accurate turning of the crankshaft pulley, facilitating easier maintenance and repairs.

  • Precision Engineering: Designed specifically for BMW M57 diesel engines for accurate pulley adjustment.
  • Compatibility: Fits various BMW diesel engines including N47, N57, and M57 models.
  • Durable Construction: Built to withstand the demands of automotive maintenance and repair.
  • Enhanced Efficiency: Simplifies crankshaft pulley turning, making engine service tasks more straightforward.

For a comprehensive tool kit, search for T#23913947.

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Schwaben - Corporate Logo
T#:584104
Part#: 024570SCH01A
Ships on Sep 1, 2026
Sale - Save 25% $ 63.99

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

$ 47.99 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 63.99

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

$ 47.99 USD
Free Shipping on orders $49 and up
Pair of essential main pulley tools designed for MINI vehicles

Alta Performance - Corporate Logo
T#:394899
Part#: AMPENG500
In Stock
$ 129.99 USD
Free Shipping
$ 129.99 USD
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ALTA Lightweight Crank Pulley (LCP) for Mini

Upgrade your Mini's performance with the ALTA Lightweight Crank Pulley (LCP), designed to increase horsepower and torque. Available in two sizes - 0% Stock Sized and +2% Oversized - this pulley is engineered for Supercharged Cooper S models. Crafted from 6061T6 aluminum, the ALTA pulley is lightweight, weighing just 0.65 lbs, providing a weight reduction of over 2.3 lbs compared to the stock crank pulley.

  • Increases horsepower and torque
  • Lightweight design reduces rotational mass
  • Does not wear out engine bearings or oil pump
  • Adds boost safely and reliably
  • Improves belt contact with pulleys, reducing wear
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Alta Performance - Corporate Logo
T#:26238480
Part#: AMPENG520
In Stock at Vendor
$ 129.99 USD
Free Shipping on orders $49 and up

Enhance the performance of your Mini with the ALTA Lightened Crank Pulley (LCP), engineered to increase horsepower and torque. Available in 0% Stock Sized and +2% Oversized options, this pulley is crafted from 6061T6 aluminum, weighing only 0.65 lbs. Significantly lighter than the stock crank pulley, the ALTA LCP ensures improved engine efficiency without adding vibration or noise. The +2% Oversized pulley provides additional boost for Supercharged Cooper S models, delivering safe and reliable performance. With increased belt contact, this pulley reduces wear and enhances durability, making it a must-have upgrade for Mini enthusiasts.

  • Increases horsepower and torque
  • Lightweight 6061T6 aluminum construction
  • Available in 0% Stock Sized and +2% Oversized options
  • Does not affect charging system
  • Improves engine efficiency and performance
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Schwaben - Corporate Logo
T#:23913946
Part#: 003581SCH01A
In Stock
Sale - Save 25% $ 20.99

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

$ 15.74 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 20.99

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

$ 15.74 USD
Free Shipping on orders $49 and up

Certain alternators necessitate the use of a splined wrench to secure the alternator in place, with the splined end providing a firm grip for turning. This specialized tool enables you to effortlessly grasp and remove the alternator without the need for additional tools during the process.


Features:

  • 1/2" drive
  • T50 Torx bit end locks the alternator in place while the splined sleeve goes into the pulley for a strong grip that allows you to turn it.
  • Services  1998-present day Mercedes-Benz, including 606 (W210), 648 (W211, W164), 642 (W211, W164), as well as Mercedes E300 (1996-1999)
  • T50 Torx bit can also be used on engines such as the M57 but will need another piece, such as a pass-through socket, to hold the alternator in those engines. See ES#4743294
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Alta Performance - Corporate Logo
T#:27938418
Part#: AMPENG195BK
In Stock at Vendor
$ 99.99 USD
Free Shipping on orders $49 and up

MINI R52 R53 Adjustable Tensioner Stop - Black

Upgrade your Mini's engine with the MINI R52 R53 Adjustable Tensioner Stop - Black. Engineered for precision and durability, this tensioner stop allows for easy adjustment of belt tension, ensuring optimal performance. Say goodbye to belt slippage and enjoy improved engine reliability with this high-quality accessory.

  • Allows for easy adjustment of belt tension
  • Prevents belt slippage for improved engine reliability
  • Engineered for precision and durability
  • Enhances performance of your Mini's engine
  • Sleek black design adds a stylish touch
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Genuine BMW Motorsport - Corporate Logo
T#:396369
Part#: 12311311449KT
Ships on Sep 17, 2026
$ 1,696.99 USD
Free Shipping on orders $49 and up

Group A racecars were the top of their class in both touring car and rally racing. Heavily modified and extremely fast these cars set out to demonstrate the best of what a manufacturer could do on the racetrack. It was the predecessor to the current DTM class racing and set a standard for many other divisions of motorsport to follow.  

One of the weaker points of the S14 engine, when speaking from a racing standpoint is the belt drive system. While fine for a street going car, a V-belt is not suitable for high RPM applications. On the track, most of your time will be spent in the higher rev range which puts extreme amounts of stress on the factory setup. BMW realised this and came up with a solution that involved doing away with the V belt system and using a 6 rib serpentine style instead.

Extremely resistant to slippage and failure this design holds up much better the abuse of track duty and won't leave you stranded and waiting for tow back to the pit. Additionally, this kit does not accommodate and a/c compressor and the alternator and waterpump are underdriven by way of slightly larger pulleys. Combined, this puts less of a load on the crankshaft which leads to more efficient power delivery to the ground. If you track you E30 M3, this is an essential upgrade and until now was extremely difficult to source. Do not skip this pivotal step in your engine build or overhaul and get a leg up on the competition the Group A way.
Please note this kit is special order and in non-returnable

Features:

  • Kit replaces all engine pulleys and crank damper
  • Includes 6 rib serpentine belt
  • Underdriven waterpump and alternator pulleys
  • Recommended for off road and racing use only 

This kit fits the following BMWs:
1986-1992 BMW M3 All 
 

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