BMW Drive Belts & V-Belts for BMW E30 M3 S14 2.3L

Clear BMW chassis

Please ensure your correct model is selected

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.

Sub-Categories

Sort By:

Genuine BMW Alternator Pulley - 66mm - M20 2.5L
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:19315
Part#: 12311288238
Ships in 3 Business Days
4% off MSRP $ 109.99

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

$ 105.99 USD
Free Shipping
4% off MSRP
$ 109.99

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

$ 105.99 USD
Free Shipping


Genuine BMW Pulley - D=66mm

This item fits the following BMW Chassis:
E30 M3,E30,E34

Fits BMW Engines including:
M10,M20,S14

S14 VAC/ATI Crank Damper - BMW S14B23/B25/B27
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
VAC Motorsports - Corporate Logo
T#:12610319
Part#: VAC-HPCD-S14
Ships in 7 Business Days
$ 699.99 USD
Free Shipping on orders $49 and up
NOTE: Due to space limitations, the design of this damper will overdrive your components (water pump, power steering, and alternator) by approximately 10-13%; we highly recommend using underdrive pulleys in your setup Controlling the harmonic resonance of the BMW S14 engine is highly important as RPMs rise, but the ideal configuration of the 4-cylinder motor makes even the most experienced engine builders overlook some fundamental principles of engine harmonics that can be destructive. Harmonics destroy these motors by causing extensive oil pump and crankshaft damage, but the addition of VAC’s Harmonic Damper eliminates the unstable crankshaft harmonic vibrations that cause internal engine wear. By eliminating harmonic vibrations, your S14 engine will be able to produce more horsepower and torque with increased reliability. The VAC/ATI Harmonic Damper is made with an integral pulley, eliminating the need for the additional pulley other models require. Exceeds SFI 18.1 Safety Certification Eliminates problems with lightweight clutch and flywheel assemblies Controls destructive harmonic forces Reduces instances of bearing wear, accessory failure and oil pump failure Includes lightweight VAC Billet Crankshaft Pulley Made in USA ATI Performance Products, Inc. is located in Baltimore, MD, and specializes in producing and maintaining high performance products for street and track applications. Over the years ATI has earned a reputation for its cutting edge technology, attention to detail and rigorous testing under race conditions.
Show More Show Less
Bav Auto Ratcheting Serpentine Belt Wrench Kit
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bav Auto Tools - Corporate Logo
T#:580390
Part#: B8800077
In Stock
Sale - Save 10% $ 67.99

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

$ 61.19 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 67.99

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

$ 61.19 USD
Free Shipping on orders $49 and up
Used to retract your serpentine belt tensioner. This kit includes 18mm, 5/8 in, 14mm, 13mm, 12mm, sockets and 3/8 in and 1/4 in drive adapters

Genuine BMW Power Steering Belt - E30 318i M10 E30 M3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:58511
Part#: 32421316785
Ships in 6 Business Days
Sale - Save 15% $ 41.99

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

$ 35.50 USD
Free Shipping on orders $49 and up
Sale - Save 15%
$ 41.99

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

$ 35.50 USD
Free Shipping on orders $49 and up


Genuine BMW Fan Belt - Avx 10X813
This item fits the following BMW Chassis:
E30 M3,E30


VAC Underdrive Power Pulley Set - S14
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
VAC Motorsports - Corporate Logo
T#:598754
Part#: VAC-UPPS-S14-3-G
Ships on Jul 17, 2026
$ 334.99 USD
Free Shipping
$ 334.99 USD
Free Shipping
Made using only virgin billet aluminum, a hard anodized finish, and the tightest tolerances, VAC's pulley sets are used on some of the fastest S14s on the planet. This lightweight design optimizes performance and response while under-driving components just the right amount for proper function. Perfect for track cars, they can also be used on a street car without any problems. Features: Reduces pump cavitation at higher rpm's Saves weight when every bit counts Includes new, correct length, labeled Contitech belts for WP, ALT, P/S
Show More Show Less
Genuine BMW Compressor Adjusting Bar - E30,E30 M3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:21403
Part#: 64521277002
Special Order: No Guaranteed ETA
2% off MSRP $ 50.99

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

$ 49.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 50.99

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

$ 49.99 USD
Free Shipping on orders $49 and up

Allows for adjustment of the air conditioning compressor, increasing tension on the drive belt.


Genuine BMW Adjusting Bar
This item fits the following BMW Chassis:
E30 M3,E30

 

Show More Show Less

Belt - Air Conditioner - E30 E28 - M20 Engine - 13x810mm
For vehicles with production date up to 03/1992
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Continental - Corporate Logo
T#:1451
Part#: 13X810
In Stock
$ 9.47 USD
Free Shipping on orders $49 and up
$ 9.47 USD
Free Shipping on orders $49 and up
This belt drives the air conditioning compressor on many (see list) M20 6 cylinder engines. We recommend checking your belts every 10,000 miles. If your belts have excessive cracks, dry rot, missing teeth and/or grooves, are causing noise, it's time for new belts.

This air conditioning belt (13x810mm) fits the following BMWs:
1984-1985 E30 325, 325e, 325es
1984-1988 E28 528e
1984-1986 E28 524td
1989-1990 E34 525i (M20 single cam engine)
Show More Show Less
Continental Power Steering Belt - E30
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Continental - Corporate Logo
T#:369338
Part#: 32421469237
Ships in 1-2 days
$ 10.99 USD
Free Shipping on orders $49 and up
Make sure your vehicle is steering with power

Belt - Power Steering - E30 M3 - 10x810mm
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Continental - Corporate Logo
T#:1500
Part#: 10X810
Ships in 6 Business Days
$ 11.99 USD
Free Shipping on orders $49 and up
This belt drives the power steering pump. We recommend checking your belts every 10,000 miles. If your belts have excessive cracks, dry rot, missing teeth and/or grooves, are causing noise, it's time for new ones. This belt is for the 1987, 1988, 1989, 1990, and 1991 M3, which has the S14 4 cylinder engine.

This Power Steering belt fits the following BMWs:
1987-1991 E30 M3
Show More Show Less

Belt - Air Conditioner - E30 M3 & M20 6 Cyl - 13x823mm
With wing cell compressor
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Continental - Corporate Logo
T#:1495
Part#: 13X823
Back Ordered
$ 11.99 USD
Free Shipping on orders $49 and up
$ 11.99 USD
Free Shipping on orders $49 and up
This belt drives the air conditioning compressor for the AC system on many M20 6 cylinders, as well as E30 M3. 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.

This air conditioning belt (AC belt) fits the following BMWs:
1987-1991 E30 M3
1984-1985 E30 318i (M10)1986-1988 E30 325, 325e, 325es
1986-1991 E30 325i, 325is, 325ix
1987-1992 E30 325ic (convertible)
1983-1983 E28 528e
Show More Show Less
Accessory Drive Belt Kit
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:55281779
Part#: 10865ACDKT
Ships in 6 Business Days
New Item
$ 33.46 USD
Free Shipping on orders $49 and up
The Turner Motorsport Accessory Drive Belt Refresh Kit is the ultimate preventive maintenance package for your classic chassis.
OEM Accessory Belt Kit - E30 M3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:554431
Part#: E30M3ACCKT
Ships on Jul 21, 2026
$ 91.99

This product was last offered at the strikethrough price on
03-27-2026

$ 88.99 USD
Free Shipping
$ 88.99 USD
Free Shipping

Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or over heated engine due to a bit of simple overlooked maintenance. This kit includes the belts and tensioner bar.

Fits the following BMWs:
1985-1991 E30 BWM M3

Show More Show Less


No Longer Available.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW Motorsport - Corporate Logo
T#:396369
Part#: 12311311449KT
Ships on Aug 3, 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 
 

Show More Show Less