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BMW Drive Belts & V-Belts for BMW 2 Series F23 (2015+)

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

2X Entries Into Our F80 M3 Sweepstakes

T#:558795

Part#: VTT-CRANKHUB-1

In Stock

$ 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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Qty

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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Accessory Belt Tensioner - Mechanical

10X Entries Into Our F80 M3 Sweepstakes

T#:32450133

Part#: 11288570439

In Stock

Sale - Save 20% $ 93.99

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

$ 75.06 USD

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Sale - Save 20%

$ 93.99

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

$ 75.06 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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Qty

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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Accessory Belt Tensioner Assembly

10X Entries Into Our F80 M3 Sweepstakes

T#:32350878

Part#: 11287594969

In Stock

Sale - Save 15% $ 47.99

This product was last offered at the strikethrough price on
06-18-2026

$ 40.79 USD

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Qty

Sale - Save 15%

$ 47.99

This product was last offered at the strikethrough price on
06-18-2026

$ 40.79 USD

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OEM Febi Mechanical Accessory Belt Tensioner - BMW B46/48 B58 ...

We Price Match - Give Us A Call or Chat!

T#:587397

Part#: 11288570439

Ships in 6 Business Days

$ 140.99

This product was last offered at the strikethrough price on
05-07-2026

$ 121.99 USD

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$ 121.99 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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MMR Crank Hub Kit - N55/S55

T#:4565824

Part#: MMR20-1003FK

Ships in 2 Business Days

$ 849.99 USD

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$ 849.99 USD

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Anyone with a modified N55/S55 knows the risks involved with the OEM Crank Hub. When the engine simply can't handle the stresses its put under or the design is such that it simply does not support extreme conditions, issues can arise. Under certain conditions, the N55/S55 crank hub likes to spin, without warning and even when the engine is in perfect health. MMR has produced a EN36 machined billet one-piece crank hub heat treated with a 0.75mm case hardening which makes it extremely durable. Due to the one-piece design, it ensures that the friction plates cannot slip. This offers a huge jump in reliability when paired with a new properly torques crank bolt. Installation is requires no drilling or modification to the OEM crankshaft ensuring a perfect fit! Included in this kit is MMR's T-6061 machined billet aluminum capture plate anodized in their trademark finish. The MMR Performance capture plate secures the head of the OE crank bolt and prevents it from turning or being able to loosen. *Installation recommended by a professional shop or technician.

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OEM Febi Accessory Belt Tensioner Assembly - BMW N20 2.0L

We Price Match - Give Us A Call or Chat!

T#:38419107

Part#: 11287594969

Ships in 2 Business Days

$ 78.99 USD

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$ 78.99 USD

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This is the main belt tensioner for the accessory belt.

Accessory Belt Tensioner Assembly

We Price Match - Give Us A Call or Chat!

T#:578360

Part#: 11288604266

Special Order: No Guaranteed ETA

$ 70.00 USD

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$ 70.00 USD

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Keep your N55 or S55-powered ultimate driving machine running at peak performance with this premium replacement automatic belt tensioner from Febi Bilstein.

Crankshaft Pulley

T#:55066632

Part#: 1004202

Special Order: No Guaranteed ETA

$ 154.99 USD

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$ 154.99 USD

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This replacement crankshaft harmonic balancer from febi bilstein is designed to restore factory-level drivetrain refinement and protect your engine.

V-Ribbed Belt Kit With Belt Tensioner

T#:56616370

Part#: 11288650740

Special Order: No Guaranteed ETA

$ 86.99 USD

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$ 86.99 USD

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The Febi Bilstein Drive Belt Set offers a complete, high-grade replacement solution designed to tackle worn drive belts and weak tensioners simultaneously.

Meyle Mechanical Accessory Belt Tensioner - BMW B46/48 B58

5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

T#:5108968

Part#: 11288580360

Ships on Oct 1, 2026

$ 95.99 USD

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$ 95.99 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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