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Genuine BMW - Corporate Logo
T#:376712
Part#: 11287530314KT1
Ships in 3 Business Days
$ 306.99 USD
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$ 306.99 USD
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Having your accessory belt fail is definitely inconvenient, and can leave you on the side of the road if the alternator isn't charging. Over time the tensioner and the belt itself gets worn and will eventually fail. This kit includes everything you need to service the belt drive system and keep everything in check.
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Genuine BMW - Corporate Logo
T#:33684
Part#: 11287582946
Ships in 3 Business Days
6% off MSRP $ 179.99

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

$ 168.99 USD
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6% off MSRP
$ 179.99

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

$ 168.99 USD
Free Shipping


Genuine BMW Mechanical Belt Tensioner -
This item fits the following BMW Chassis:
E82,E90,E92,E93

Fits BMW Engines including:
N55

Genuine BMW Crank Pulley
For vehicles with manual transmission only
Genuine BMW - Corporate Logo
T#:32904
Part#: 11237572788
Ships in 3 Business Days
2% off MSRP $ 524.99

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

$ 514.99 USD
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2% off MSRP
$ 524.99

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

$ 514.99 USD
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Genuine BMW Vibration Damper
This item fits the following BMW Chassis:
E82 1M Coupe,E82,E89 Z4,E90,E92,E93

Fits BMW Engines including:
N54,N54T

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Genuine BMW - Corporate Logo
T#:376795
Part#: 11287582946KT
Ships in 3 Business Days
$ 449.99 USD
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$ 449.99 USD
Free Shipping

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.

Kit contents:

Genuine BMW accessory belt
Genuine BMW belt tensioner assembly
Genuine BMW idler pulley

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Genuine BMW - Corporate Logo
T#:58581
Part#: 32427582947
Ships in 3 Business Days
6% off MSRP $ 107.99

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

$ 100.99 USD
Free Shipping
6% off MSRP
$ 107.99

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

$ 100.99 USD
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Genuine BMW Pulley -
This item fits the following BMW Chassis:
E82,E90,E92,E93

Genuine BMW - Corporate Logo
T#:360624
Part#: 11287563927
In Stock
6% off MSRP $ 179.99

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

$ 168.99 USD
Free Shipping
6% off MSRP
$ 179.99

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

$ 168.99 USD
Free Shipping
This Genuine BMW mechanical tensioner assembly is designed to keep the serpentine belt at the correct pressure against the pulleys. Many BMW's can have either a hydraulic or mechanical belt tensioner. Please check to see which tensioner type you need before ordering.
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Genuine BMW - Corporate Logo
T#:374339
Part#: OEN54BLTKT
Ships in 3 Business Days
$ 374.99 USD
Free Shipping
$ 374.99 USD
Free Shipping

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 BMW engines:
N54 3.0L

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Genuine BMW - Corporate Logo
T#:32895
Part#: 11237564969
Ships in 6 Business Days
8% off MSRP $ 789.99

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

$ 723.99 USD
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8% off MSRP
$ 789.99

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

$ 723.99 USD
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Genuine BMW Vibration Damper -
This item fits the following BMW Chassis:
E70 X5,E82,E83 X3,E85,E86,E89 Z4,E90,E92,E93

Fits BMW Engines including:
N51,N52,N52N

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Genuine BMW - Corporate Logo
T#:33681
Part#: 11287578675
Ships in 3 Business Days
8% off MSRP $ 102.99

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

$ 94.99 USD
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8% off MSRP
$ 102.99

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

$ 94.99 USD
Free Shipping


Genuine BMW Deflection Pulley -
This item fits the following BMW Chassis:
E82,E90,E92,E93

Fits BMW Engines including:
N55


Genuine BMW - Corporate Logo
T#:58574
Part#: 32427553955
Ships in 3 Business Days
6% off MSRP $ 107.99

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

$ 100.99 USD
Free Shipping
6% off MSRP
$ 107.99

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

$ 100.99 USD
Free Shipping


Genuine BMW Pulley
This item fits the following BMW Chassis:
E82 1M Coupe,E82,E90,E92,E93

Genuine BMW - Corporate Logo
T#:39000
Part#: 12317560483
Ships in 6 Business Days
6% off MSRP $ 145.99

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

$ 136.99 USD
Free Shipping
6% off MSRP
$ 145.99

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

$ 136.99 USD
Free Shipping


Genuine BMW Pulley Alternator - Bosch 6Pk
This item fits the following BMW Chassis:
E70 X5,E82,E83 X3,E90,E92,E93

Fits BMW Engines including:
N51,N52,N52N,N54

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Packaged by Turner - Corporate Logo
T#:22130432
Part#: 11287530314TKT
In Stock
Sale - Save 18% $ 127.99

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

$ 104.71 USD
Free Shipping on orders $49 and up
Sale - Save 18%
$ 127.99

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

$ 104.71 USD
Free Shipping on orders $49 and up
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, tensioner assembly, and idler pulley. 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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Gates - Corporate Logo
T#:591625
Part#: 11287628650
Ships in 6 Business Days
$ 29.99 USD
Free Shipping on orders $49 and up
Drives the alternator, A/C compressor, and power steering pump
Gates - Corporate Logo
T#:591629
Part#: 11287628653
Ships on Oct 2, 2026
$ 55.99 USD
Free Shipping on orders $49 and up
Drive belt for the A/C and power steering
Alternator Pulley
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:52164889
Part#: 12317560483
In Stock
New Item
$ 45.99 USD
Free Shipping on orders $49 and up

Is your BMW making a chirping or grinding noise at idle? The culprit is frequently a failing alternator decoupler pulley. Unlike a traditional solid pulley, this Overrunning Alternator Pulley (OAP) allows the alternator rotor to "freewheel" when engine speeds drop suddenly. This specialized function protects your BMW drive belt and belt tensioner from excessive snap-back, vibration, and "belt slap."

Prevent Catastrophic Engine Failure

Over time, the internal clutch mechanism can seize or slip, leading to accelerated wear or total serpentine belt failure. On BMW engines, a snapped belt can be ingested through the front main seal, causing catastrophic engine damage. Replacing this pulley is a cost-effective preventative maintenance step that restores smoothness to your accessory drive without the high cost of a complete alternator replacement.

Features & Benefits:

Lowers the load on the drive belt, tensioner, and AC compressor.
Stops "belt slap" and rhythmic chirping noises during deceleration and idle.
Direct Replacement with high-quality construction ensures perfect fitment and long-term durability.
Essential Maintenance for N52 engines

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Febi - Corporate Logo
T#:38452839
Part#: 11237516385
Special Order: No Guaranteed ETA
$ 251.99 USD
$ 251.99 USD
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 sync 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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Continental - Corporate Logo
T#:14481
Part#: 11287628652
Back Ordered
$ 36.44

This product was last offered at the strikethrough price on
04-28-2026

$ 28.28 USD
Free Shipping on orders $49 and up
$ 28.28 USD
Free Shipping on orders $49 and up
This is the main drive belt / serpentine belt 7PK x 1855 that drives all of the engine auxillaries, such as the alternator, A/C and power steering pump. If your belt has excessive cracks, dry rot, missing teeth and/or grooves, or are causing noise, it's time for a new one.

This item fits the following BMWs:
2008-2010 E82 BMW 135i
2011 E82 BMW 1M Coupe
2006-2010 E90 BMW 335i 335xi 335i xDrive - Sedan
2007-2010 E92 BMW 335i 335is 335xi 335i xDrive - Coupe
2011-2013 E92 BMW 335is - Coupe
2007-2010 E93 BMW 335i Convertible
2011-2013 E93 BMW 335is Convertible
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Packaged by Turner - Corporate Logo
T#:1241396
Part#: TMSN54BPKT
Back Ordered
Sale - Save 6% $ 541.99

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

$ 509.19 USD
Free Shipping
Sale - Save 6%
$ 541.99

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

$ 509.19 USD
Free Shipping
BMW has a seemingly endless number of fans of the N54/N55/S55 engines, three straight-six turbo engines that are each capable of 750+ horsepower, but that doesn't mean they were without their faults! BMW's N54 had a notoriously rocky start with reliability due to multiple issues such as fuel injectors failing, turbos failing, serpentine belt failure, crank hubs coming loose, and more... BMW made multiple attempts to fix the issues plaguing the N54, but they could only do so much and the fixes rolled out seemed temporary at best. Following the N54, BMW released their updated N55 and S55 engines, giving many people hope that these engines would address the previous issues. Unfortunately, this was only some-what the case. Crank hubs and crank bolts continued to loosen over time and serpentine belts continued to shred themselves and get pulled into the oil pan through the front main seal. For all three engines, this meant a single failure could effectively turn your engine into an oversized paperweight. Luckily for us, the BMW community is full of skilled enthusiasts who have gladly taken up the task to offer solutions! The first headache to be addressed was the Crank Hub and Bolt. Using a simple plate that fits perfectly over your crank hub's hex-head bolt and mounts up against the damper, the crank bolt is effectively locked in place, preventing it from being able to back out until the plate is fully removed. Next up was the serpentine belt failures. It's not known what exactly causes the serpentine belt to split, but once it does, the pieces hanging off of the belt wrap around and behind the damper. This leads to the belt breaking up into smaller pieces and eventually getting pushed between the crank hub and rear main seal into the oil pan. These small pieces of debris get caught in and block the oil pickup, preventing oil flow and leading to engine failure. To prevent this, multiple aftermarket companies came up with their own versions of Crank Seal Plates. This plate is installed behind the front damper, blocking the opening that allows the serpentine belt to pass between the crank hub and seal, keeping debris out of your oil pan! Also included in this kit are the components to service your front Oil Cooler/Filter Housing gaskets, refresh your drive belt system, and install the aftermarket upgrades. Kit Features and Contents: Vargas Turbo Crank Bolt Capture Vargas Turbo Crank Seal Plate OEM Accessory Belt OEM Belt Tensioner & Idler Pullies Liqui-Moly Longtime High Tech Engine Oil (5w-30) - 7 Liters OEM Hengst Oil Filter OEM Oil Filter/Cooler Housing Gaskets TMS Oil Change Sticker Genuine BMW Full-Strength Coolant - 1 Liter Looking to go even further and upgrade your Crank Hub as well? Check out T#558924
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Ina - Corporate Logo
T#:42234660
Part#: FB6K783
Ships in 8 Business Days
$ 37.99 USD
Free Shipping on orders $49 and up
Protect your BMW’s performance and reliability with the INA Accessory Drive Belt engineered to keep your engine accessories running at their best.