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BMW Drive Belts & V-Belts for BMW Z Series E85/6 (2003-2008)

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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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Hydraulic Alternator Belt Tensioner Assembly

2X Entries Into Our F80 M3 Sweepstakes

T#:396757

Part#: 11287838797

In Stock

$ 53.99 USD

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$ 53.99 USD

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URO Aluminum Water Pump Pulley - E39, E46, E53, E60, E83, Z3, Z4 ...

2X Entries Into Our F80 M3 Sweepstakes

T#:340641

Part#: 11511436590

In Stock

$ 45.99 USD

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$ 45.99 USD

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An upgrade over commonly failing plastic pulley

Water Pump Pulley

2X Entries Into Our F80 M3 Sweepstakes

T#:638798

Part#: 11517840403

Ships in 1 Business Day

$ 57.99 USD

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$ 57.99 USD

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Mechanical Alternator Belt Tensioner Assembly

2X Entries Into Our F80 M3 Sweepstakes

T#:371980

Part#: 11281427252

Ships in 1 Business Day

$ 50.99 USD

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$ 50.99 USD

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Tensions the belt connecting the water pump, alternator, and power steering pump. Includes roller.

Crankshaft Pulley With Vibration Damper

2X Entries Into Our F80 M3 Sweepstakes

T#:593668

Part#: 11237564969

Ships in 1 Business Day

$ 234.99 USD

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$ 234.99 USD

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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 synch 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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Belt Tensioner Conversion Kit

2X Entries Into Our F80 M3 Sweepstakes

T#:600039

Part#: 11287838797K

Back Ordered

$ 82.99 USD

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$ 82.99 USD

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Update from a mechanical tensioner to a hydraulic style tensioner

Hydraulic Alternator Belt Tensioner Conversion Kit

10X Entries Into Our F80 M3 Sweepstakes

T#:15710833

Part#: 11287838797-KT

In Stock

Sale - Save 27% $ 165.99

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

$ 120.96 USD

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Qty

Sale - Save 27%

$ 165.99

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

$ 120.96 USD

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The original mechanical design is has been discontinued by BMW. So now Turner offers this complete hydraulic tensioner conversion kit for your BMW alternator/water pump/power steering belt. Changes the old style mechanical design to the updated hydraulic design recommended by BMW. Includes the following parts Hydraulic Tensioner Adjusting Pulley Caps & Dust Guards Securing Hardware

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URO Belt Tensioner Assembly - E60, E61, E70, E82, E88, E90, E91, E92,...

2X Entries Into Our F80 M3 Sweepstakes

T#:591618

Part#: 11287530314

Ships in 1 Business Day

$ 48.99 USD

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$ 48.99 USD

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Complete tensioner assembly

Mechanical A/C Belt Tensioner Assembly

2X Entries Into Our F80 M3 Sweepstakes

T#:361998

Part#: 11281433571

Ships in 1 Business Day

$ 53.99 USD

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$ 53.99 USD

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Complete tensioner assembly with roller

Accessory Belt Service Kit w/ Kevlar Reinforced Belt - E46 M3, Z3M, Z...

10X Entries Into Our F80 M3 Sweepstakes

T#:23482931

Part#: S54KEVACCKT

Ships on Nov 12, 2026

Sale - Save 14% $ 333.99

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

$ 285.88 USD

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Qty

Sale - Save 14%

$ 333.99

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

$ 285.88 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belts, tensioner assemblies, and new tensioner pulleys. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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OEM Accessory Belt Kit - E46 M3

10X Entries Into Our F80 M3 Sweepstakes

T#:554437

Part#: E46M3ACCKT

Ships in 1 day

$ 350.99

This product was last offered at the strikethrough price on
08-24-2026

$ 281.99 USD

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$ 281.99 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 all of the items that will need replaced such as the belts, tensioners, and hardware.

Fits the following BMWs:
2001-2006 E46 BMW M3

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Mechanical A/C Belt Tensioner Assembly

2X Entries Into Our F80 M3 Sweepstakes

T#:384308

Part#: 11287512758

In Stock

$ 43.99 USD

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$ 43.99 USD

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Complete tensioner assembly with roller

Drive Belt Pulley Cap

2X Entries Into Our F80 M3 Sweepstakes

T#:639224

Part#: 11281727159

In Stock

$ 3.99 USD

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$ 3.99 USD

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Replace that missing protective cap and protect your belt tensioner bearing from debris.

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