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BMW Drive Belts & V-Belts for BMW E92 M3 S65 4.0L

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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OEM INA Accessory Belt Tensioner Pulley - Water Pump/Alternator - BMW...

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T#:31059479

Part#: 11287838194KT

In Stock

$ 30.99 USD

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$ 30.99 USD

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If your water pump or alternator belt tensioner has failed because of the pulley or bearing, this replacement pulley is all you need to get your BMW back on the road! BMW and other brands usually sell the tensioner with the metal arm included, which increases the cost, even though the arm often doesn't need replacement. This OEM replacement is a much more affordable option, saving you $150 or more compared to the Genuine BMW tensioner.

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OEM INA Accesory Belt Tensioner Pulley - Air Conditioner - BMW E9X M3...

For clockwise power steering pump

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T#:31092500

Part#: 11287838196KT

In Stock

$ 25.99

This product was last offered at the strikethrough price on
08-23-2026

$ 24.99 USD

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$ 24.99 USD

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If your air conditioning belt tensioner has failed because of the pulley or bearing, this replacement pulley is all you need to get your BMW back on the road! BMW and other brands usually sell the tensioner with the metal arm included, which increases the cost, even though the arm often doesn't need replacement. This OEM replacement is a much more affordable option, saving you $180 or more compared to the Genuine BMW tensioner.

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OEM Accessory Belt Service Kit - E9X M3 S65

For vehicles with production date from 04/2008

10X Entries Into Our F80 M3 Sweepstakes

T#:391554

Part#: 11287837898

Ships in 1-2 days

$ 964.99

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

Starting at $ 928.99 USD

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Starting at $ 928.99 USD

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This comprehensive kit includes both belts, belt tensioners, upper and lower deflection pulleys, and the adjusting pulley. Select from all Genuine BMW parts or a combination of OEM/OE BMW parts. Staying on top of your belt maintenance is the smart move. Cracked or worn belts are a recipe for a headache or worse. The main drive belt runs critical components - the alternator, water pump, and power steering pump. The pulleys contain bearings that may be worn when it comes time to replace the belts. You can check the pulleys by relieving tension on the belt and feeling each pulley for play or grinding. The tensioner also sees similar wear. If your pulleys are new or don't need replacement, you can pick up the belts on their own.

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OEM INA Idler Pulley - Multiple BMWs

For vehicles with a production date up to 04/2008

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T#:1626

Part#: 11287841228

In Stock

$ 18.99 USD

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$ 18.99 USD

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This is an OEM INA Upper Idler Pulley, also known as the roller pulley or deflection pulley. The upper and lower idler pulleys are known to be the primary sources for 'belt squealing'. The pulley is also encased in rubber which will crack over time. If left without service the rubber could fail completely, chucking the belt and leaving you stranded. Replacement is a very simple procedure and can be done anytime the fan is off the engine (belt replacement, water pump service, alternator replacement, etc).

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OEM Belt and Tensioner Service Kit for Power Pulley Kit - E9X M3 ...

10X Entries Into Our F80 M3 Sweepstakes

T#:391555

Part#: S65LPPK-BELTKT

Ships in 1-2 days

$ 928.99 USD

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$ 928.99 USD

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We’ve put together the Ultimate Belt & Tensioner Renewal Kit, curated specifically for M3 owners running our Turner E9X M3 Pulley Upgrade. Designed to restore factory fresh mechanical precision while maintaining high performance reliability

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - E9X M3 S65 ...

For vehicles with production date from 04/2008

10X Entries Into Our F80 M3 Sweepstakes

T#:23416553

Part#: 11287841529KT

Ships in 1-2 days

$ 1,038.99 USD

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$ 1,038.99 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 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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BMW Drive Belts & V-Belts for BMW E92 M3 S65 4.0L

Sub-Categories

OEM INA Accessory Belt Tensioner Pulley - Water Pump/Alternator - BMW...

OEM INA Accesory Belt Tensioner Pulley - Air Conditioner - BMW E9X M3...

OEM Accessory Belt Service Kit - E9X M3 S65

OEM INA Idler Pulley - Multiple BMWs

OEM Belt and Tensioner Service Kit for Power Pulley Kit - E9X M3 ...

Accessory Belt Service Kit w/ Kevlar Reinforced Belt - E9X M3 S65 ...

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