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

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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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Genuine BMW Alternator Pulley - 66mm - M20 2.5L

T#:19315

Part#: 12311288238

Ships in 1-2 days

3% 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.

$ 106.99 USD

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3% 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.

$ 106.99 USD

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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

T#:12610319

Part#: VAC-HPCD-S14

Ships in 6 Business Days

$ 699.99 USD

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$ 699.99 USD

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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.

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Genuine BMW Power Steering Belt - E30 318i M10 E30 M3

T#:58511

Part#: 32421316785

Ships in 3 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

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Sale - Save 15%

$ 41.99

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

$ 35.50 USD

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

Bav Auto Ratcheting Serpentine Belt Wrench Kit

10X Entries Into Our F80 M3 Sweepstakes

T#:580390

Part#: B8800077

Ships on Dec 29, 2026

Sale - Save 7% $ 67.99

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

$ 62.99 USD

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Sale - Save 7%

$ 67.99

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

$ 62.99 USD

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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

VAC Underdrive Power Pulley Set - S14

T#:598754

Part#: VAC-UPPS-S14-3-G

Ships on Oct 30, 2026

$ 334.99 USD

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$ 334.99 USD

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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

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Genuine BMW Compressor Adjusting Bar - E30,E30 M3

T#:21403

Part#: 64521277002

In Stock

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

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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

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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

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Belt - Air Conditioner - E30 E28 - M20 Engine - 13x810mm

For vehicles with production date up to 03/1992

We Price Match - Give Us A Call or Chat!

T#:1451

Part#: 13X810

In Stock

$ 9.47 USD

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$ 9.47 USD

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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)

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Accessory Drive Belt Kit

T#:55281779

Part#: 10865ACDKT

Ships in 7 Business Days

$ 34.73 USD

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$ 34.73 USD

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The Turner Motorsport Accessory Drive Belt Refresh Kit is the ultimate preventive maintenance package for your classic chassis.

Continental Power Steering Belt - E30

We Price Match - Give Us A Call or Chat!

T#:369338

Part#: 32421469237

Ships in 1-2 days

$ 10.99 USD

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$ 10.99 USD

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Make sure your vehicle is steering with power

Belt - Power Steering - E30 M3 - 10x810mm

We Price Match - Give Us A Call or Chat!

T#:1500

Part#: 10X810

Ships in 7 Business Days

$ 12.99 USD

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$ 12.99 USD

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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

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Belt - Air Conditioner - E30 M3 & M20 6 Cyl - 13x823mm

With wing cell compressor

We Price Match - Give Us A Call or Chat!

T#:1495

Part#: 13X823

Ships on Nov 17, 2026

$ 11.99 USD

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$ 11.99 USD

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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

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OEM Accessory Belt Kit - E30 M3

10X Entries Into Our F80 M3 Sweepstakes

T#:554431

Part#: E30M3ACCKT

Ships in 7 Business Days

$ 93.99 USD

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$ 93.99 USD

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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

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