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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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VTT Billet Power Steering Pulley - N54

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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ALTA Crank Pulley - 2% - R52 R53

T#:26238480

Part#: AMPENG520

In Stock at Vendor

$ 129.99 USD

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$ 129.99 USD

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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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Dinan Underdrive Crankshaft Pulley Kit - E60 M5, E63/64 M6 S85 5.0L ...

Call In Or Chat For Best Price!

T#:21078436

Part#: D560-0001

Ships in 6 Business Days

Sale - Save 10% $ 449.99

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

$ 404.96 USD

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Sale - Save 10%

$ 449.99

This product was last offered at the strikethrough price on
07-31-2026

$ 404.96 USD

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Dinan's lightweight billet aluminum crankshaft pulley underdrives each of the accessories by 13 percent, reducing parasitic drag on the engine for a 6 HP @ 8000 RPM and 4 lb-ft torque @ 8000 RPM gain on a stock vehicle. The Dinan underdrive pulley retains the factory harmonic crankshaft damper, eliminating vibration that might otherwise damage the crankshaft. The kit includes all of the necessary mounting hardware, a lightweight pulley, and shorter belts. This product is backed by our industry-leading 4 year/50,000 mile warranty so you can rest assured that you are purchasing the best quality product for your BMW. Features: All accessories are underdriven by 13% to decrease drag on the engine. Lightweight billet aluminum crankshaft pulley, black anodized and engraved. Includes mounting hardware and shorter belts.

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M7 Lightweight Crank Pulley - Stock Size

T#:12774050

Part#: 53-3M7101-0

In Stock

$ 159.99 USD

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$ 159.99 USD

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MINI R52 R53 Adjustable Tensioner Stop - Black

T#:27938418

Part#: AMPENG195BK

In Stock at Vendor

$ 99.99 USD

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$ 99.99 USD

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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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No Longer Available.

T#:396369

Part#: 12311311449KT

Ships on Sep 17, 2026

$ 1,696.99 USD

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$ 1,696.99 USD

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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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Vaico Mechanical Accessory Belt Tensioner - BMW B46/48 B58

T#:50346424

Part#: 11288580360

Special Order: No Guaranteed ETA

$ 68.99 USD

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$ 68.99 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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BMW Drive Belts & V-Belts

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VTT Billet Power Steering Pulley - N54

ALTA Crank Pulley - 2% - R52 R53

Dinan Underdrive Crankshaft Pulley Kit - E60 M5, E63/64 M6 S85 5.0L ...

M7 Lightweight Crank Pulley - Stock Size

MINI R52 R53 Adjustable Tensioner Stop - Black

MINI R52 R53 Adjustable Tensioner Stop - Black

No Longer Available.

Vaico Mechanical Accessory Belt Tensioner - BMW B46/48 B58

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