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BMW Drive Belts & V-Belts for BMW X Series E71 (2008-2014)

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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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Vargas N54/55 Billet Crank Seal Guard - BMW N54 N55 3.0L

2X Entries Into Our F80 M3 Sweepstakes

T#:638889

Part#: VTT-CRANKGUARD

In Stock

Starting at $ 89.99 USD

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Starting at $ 89.99 USD

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It is a well-known issue on the BMW N54/55 platforms that your serpentine belt can fail for various reasons. When this happens, there is a high chance of the belt getting sucked behind the front damper pulley and then being pushed past the crank seal into your oil pan. From there it can get sucked into the oil pick up causing total engine failure. Even if you do not lose the engine, it is a COSTLY repair to remove the sub-frame and drop the oil pan to remove the belt. The best way to combat this is to watch for oil leaks and keep up on your maintenance. BUT, even with those preventative measures, pre-mature belt failure can occur. This crank seal guard installs over your front crank seal and will keep the belt from being sucked in if a belt failure does occur. This is a cheap way to ensure you do not end up having to replace your motor from oil starvation due to an ingested belt. Vargas' seal is different from those already on market in two major ways. Firstly, it is not offensively priced. Secondly, it is 100% billet with no welds on the tabs to break, no cheap bent thin steel pieces. 100% Billet 6061-T6 aluminum, anodized black for long-term corrosion resistance. Crank Seal Guard includes: One VTT Billet N54/55 Crank Seal Guard Two extended 12.9 Grade bolts, and two stainless washers We highly recommend you install WITH a crank bolt capture at the same time, as you have to remove the damper anyway. Then you will get the benefit of helping eliminate the dreaded spun crank hub and the crank seal issue

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OEM Accessory Belt Service Kit - N54 3.0L

10X Entries Into Our F80 M3 Sweepstakes

T#:554448

Part#: N54ACCKT

Ships in 1 Business Day

Sale - Save 5% $ 197.99

This product was last offered at the strikethrough price on
04-15-2026

$ 187.11 USD

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Sale - Save 5%

$ 197.99

This product was last offered at the strikethrough price on
04-15-2026

$ 187.11 USD

Add to Wish List

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 overheated 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.

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Vargas "Spline Lock" Crank Hub Solution - Includes Crank Bolt Capture...

2X Entries Into Our F80 M3 Sweepstakes

T#:558795

Part#: VTT-CRANKHUB-1

Ships in 1-3 days

$ 889.99 USD

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$ 889.99 USD

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Under certain conditions, the N55 crank hub likes to spin, without warning and even when the engine is in perfect health. The engineers at Vargas saw and dealt with this problem time and again, and they saw fit to do something about it. This hub uses a proprietary "Spline Lock" technology that uses high tolerance machined splines which press into the crank, and positively lock the hub to the crank. The splines are machined in such a way that rotational forces drive the hub, and splines deeper into the crank meaning when the hub encounters a situation that would normally slip a stock hub the splined hub is driven into the crank to keep it in place (much like a splined extractor). Features: Installs the same as a stock hub Does NOT require the crank to be drilled for pins Manufactured from Harndered 17-4SS We suggest the Crank Hub System ONLY be installed by a qualified shop or technician. Timing tools are 100% REQUIRED if installed improperly engine damage may occur. DISCLAIMER: VTT and ECS are not responsible for any engine damage caused by improper installation, or misuse of the crank hub solution.

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Accessory Belt Tensioner Assembly

10X Entries Into Our F80 M3 Sweepstakes

T#:32350851

Part#: 11288604266

In Stock

Sale - Save 7% $ 51.99

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

$ 48.59 USD

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Sale - Save 7%

$ 51.99

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

$ 48.59 USD

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Deflection Pulley

10X Entries Into Our F80 M3 Sweepstakes

T#:32450136

Part#: 11288673720

In Stock

Sale - Save 10% $ 27.99

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

$ 25.19 USD

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Sale - Save 10%

$ 27.99

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

$ 25.19 USD

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Belt Tensioner

10X Entries Into Our F80 M3 Sweepstakes

T#:32450132

Part#: 11287549873

In Stock

Sale - Save 20% $ 85.99

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

$ 68.54 USD

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Sale - Save 20%

$ 85.99

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

$ 68.54 USD

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - BMW N63 S63 ...

10X Entries Into Our F80 M3 Sweepstakes

T#:23516122

Part#: 11287631824TKT

In Stock

$ 220.99

This product was last offered at the strikethrough price on
10-05-2026

$ 215.99 USD

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$ 215.99 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 the ECS Kevlar Reinforced Drive Belt, replacement A/C belt, and a new tensioner. 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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Accessory Belt Idler Pulley

10X Entries Into Our F80 M3 Sweepstakes

T#:32350879

Part#: 11287615130

In Stock

Sale - Save 22% $ 22.99

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

$ 17.94 USD

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Sale - Save 22%

$ 22.99

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

$ 17.94 USD

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A/C Belt Replacement Kit With Service Tools - F Chassis

10X Entries Into Our F80 M3 Sweepstakes

T#:41661238

Part#: 11287631825TKT

In Stock

$ 40.99 USD

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$ 40.99 USD

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Maintain peak performance of your BMW’s climate control system with the A/C Belt Replacement Kit With Service Tools - F Chassis, trusted by enthusiasts and technicians for its fit, quality, and ease of use.

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Accessory Belt Service Kit - N63 S63

10X Entries Into Our F80 M3 Sweepstakes

T#:30430707

Part#: 112876318241KT2

Ships on Dec 22, 2026

$ 206.99

This product was last offered at the strikethrough price on
10-05-2026

$ 201.99 USD

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$ 201.99 USD

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Don't let an accessory belt failure leave you stranded! Over time, the tensioner and belt wear out, risking your alternator's ability to charge and your vehicle's overall reliability. Turner Motorsport has assembled a comprehensive belt drive service kit to keep everything in check and ensure smooth operation.

Key Benefits:

Complete Service Kit: Includes all necessary components to maintain your belt drive system. Enhanced Reliability: Prevents unexpected belt failures and keeps your vehicle running smoothly. Optimized Performance: Ensures your alternator and A/C system function efficiently. Kit Contents:

Accessory Belt Belt Tensioner Assembly A/C Belt Maintain your BMW's performance and reliability with the Turner Motorsport drive belt service kit!

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