BMW Drive Belts & V-Belts for BMW 1 Series E82 (2008-2013)

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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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Crank Seal Guard - N52/N54/N55/S55
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:15876877
Part#: 049453LA01-02
Ships on Nov 3, 2026
Sale - Save 25% $ 132.99

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06-14-2026

$ 99.74 USD
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$ 132.99

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$ 99.74 USD
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Introducing our Turner Motorsport Crank Seal Guard – the essential shield for your BMW's engine integrity. Safeguarding the heart of your vehicle, this meticulously designed guard offers robust protection for the crank seal concealed behind the harmonic balancer.

Considered an indispensable maintenance component for your BMW, the Crank Seal Guard acts as a crucial defense against a potential and preventable catastrophe involving your accessory belt. Facing the reality of potential oil or coolant leaks in your engine, this guard becomes a reliable barrier, preventing these fluids from reaching the accessory belt. The consequence of a compromised belt includes walking, slipping, fraying, and rubber particles finding their way behind the harmonic balancer and into the crank seal – a scenario that can lead to severe engine failure.

Let's be honest, engine leaks are a common occurrence, and whether your engine is currently leaking or not, the Crank Seal Guard is a proactive measure against future threats. The wear and tear on the accessory belt due to oil and coolant exposure can result in slipping, tearing, or, worst-case scenario, belt snapping – posing a significant risk to your engine's well-being.

Prepare your car for the long haul and protect the vital components, It's not a matter of "if" but "when" your belt will become a problem, and our Crank Seal Guard is your proactive solution. Rigorously tested on N52/N54/N55 and S55 for 100% confirmed fitment, it stands as a reliable guardian for your engine's health. Invest in the protection your BMW deserves with the Turner Motorsport Crank Seal Guard.

Key benefits:

Protect crank seal from rogue accessory belts and their shredded debris
Optimized to fit N52, N54, N55, and S55 engines
Rigid design that fits within the space constraints between the engine block and harmonic balancer
Zinc-coated fasteners for corrosion and oxidation resistance
Design:

Modeled and designed from FARO laser scanning and Solidworks CAD
Manufactured from 6061 billet aluminum
Turner blue anodizing
Installation:

It is a good idea to note how your belt is routed before starting the installation.

2 securing bolts for crank seal guard - Torque value of 20Nm

You will find either 6 or 8 E10 bolts are holding the harmonic balancer depending on the engine.

E10 (P#11237564511) ​
​N52: 6 bolts - Torque value of 25nm
N54: 6 bolts - Torque value of 35nm
N55: 8 bolts - Torque value of 35nm

E10 (P#11237575488)
S55: 8 Bolts - Torque value of 35nm

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Lower Idler Pulley
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:32350850
Part#: 11287557851
In Stock
Sale - Save 15% $ 27.99

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

$ 23.79 USD
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Sale - Save 15%
$ 27.99

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

$ 23.79 USD
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Schwaben BMW Belt Tensioner Tool - N54/N55
10X Entries Into Our F80 M3 Sweepstakes
Schwaben - Corporate Logo
T#:387204
Part#: 020023SCH01A
In Stock
Sale - Save 25% $ 67.99

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

$ 50.99 USD
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$ 67.99

This product was last offered at the strikethrough price on
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$ 50.99 USD
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Featuring a T60 Torx head, the belt tensioner found on the N54/N55 engine has exceptionally tight quarters. Use of this tool will allow access to the lock pin hole without excessive component removal, making belt removal and installation a much easier task.

This tool fits all N54/N55 powered BMW, including: 
2008+ E82 BMW 135i 1M Coupe 
2014+ F22 BMW M235i 
2006+ E90 BMW 335i 335xi 335i xDrive - Sedan 
2007+ E92 BMW 335i 335is 335xi 335i xDrive - Coupe 
2007+ E93 BMW 335i - Convertible 
2012+ F30 BMW 335i 335i xDrive - Sedan 
2013+ F32 BMW 435i 435i xDrive - Coupe 
2014+ F34 BMW 335i xDrive GT - Gran Tourismo 
2015+ F80 BMW M3 - Sedan 
2015+ F82 BMW M4 - Coupe 
2015+ F83 BMW M4 - Convertible 
2006-2010 E60 BMW 535i 535xi 535i xDrive 
2010+ F07 BMW 535i GT, 535i xDrive GT 
2011+ F10 BMW 535i 535i xDrive 
2012+ F13 BMW 640i 
2009+ F01 BMW 740i 740li 
2011+ F25 BMW X3 xDrive35i 
2007-2013 E70 BMW X5 xDrive35i 
2007-2014 E71 BMW X6 xDrive35i 
2009+ Z4 BMW Z4 sDrive35i Z4 sDrive35is 

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Accessory Belt Tensioner Assembly
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:29101657
Part#: 11287563927
In Stock
Sale - Save 17% $ 69.99

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

$ 57.79 USD
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Sale - Save 17%
$ 69.99

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

$ 57.79 USD
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Upper Idler Pulley
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:26305073
Part#: 11287556251
In Stock
Sale - Save 25% $ 31.99

This product was last offered at the strikethrough price on
07-14-2026

$ 23.99 USD
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Sale - Save 25%
$ 31.99

This product was last offered at the strikethrough price on
07-14-2026

$ 23.99 USD
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Deflection Pulley
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:34080699
Part#: 11287578674
In Stock
Sale - Save 21% $ 28.99

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

$ 22.84 USD
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Sale - Save 21%
$ 28.99

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

$ 22.84 USD
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Bremmen Parts - Corporate Logo
T#:39497969
Part#: 11287530314
In Stock
Sale - Save 21% $ 54.99

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

$ 43.24 USD
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Sale - Save 21%
$ 54.99

This product was last offered at the strikethrough price on
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$ 43.24 USD
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This tensioner keeps the belt for the alternator, power steering, and air conditioning taut to provide maximum performance of each system.
Idler Pulley
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:34080698
Part#: 11287578675
In Stock
Sale - Save 21% $ 27.99

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

$ 22.02 USD
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This product was last offered at the strikethrough price on
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Rein - Corporate Logo
T#:34147755
Part#: 32427582947
In Stock at Vendor
Sale - Save 5% $ 71.99

This product was last offered at the strikethrough price on
08-31-2026

$ 68.39 USD
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$ 71.99

This product was last offered at the strikethrough price on
08-31-2026

$ 68.39 USD
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Power Steering Pulley is a vital component in your BMW’s power steering system, designed to maintain smooth and responsive steering performance. Available from Turner Motorsport, this high-quality pulley ensures the efficient operation of your power steering pump by providing optimal belt tension and reducing wear. Built to OEM specifications, the Power Steering Pulley is a direct-fit replacement, making installation easy and hassle-free for BMW owners and mechanics alike.

Made from durable materials, this pulley is designed to withstand the rigors of daily driving, offering long-lasting performance and reliability. It’s the perfect solution for those looking to restore or maintain the functionality of their BMW’s power steering system.

Key Benefits:

  • Ensures smooth and efficient power steering operation
  • Direct OEM fit for easy installation
  • Reduces wear on the power steering belt and pump
  • Made from durable materials for long-lasting performance
  • Available from Turner Motorsport, a trusted source for BMW parts

This Power Steering Pulley is an essential part for maintaining the functionality and reliability of your BMW’s power steering system.

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Accessory Belt Tensioner Assembly
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:54995068
Part#: 11287582946
In Stock
New Item
$ 52.99 USD
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Double roller tensioner
Torx Screw - Priced Each
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:400830
Part#: 11287530315
In Stock
Sale - Save 5% $ 7.92

This product was last offered at the strikethrough price on
08-31-2026

$ 7.52 USD
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$ 7.92

This product was last offered at the strikethrough price on
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$ 7.52 USD
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Used to mount the drive belt tensioner to the engine block.
Deflection Pulley
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:26305076
Part#: 11287535860
In Stock
Sale - Save 19% $ 20.99

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

$ 16.99 USD
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Sale - Save 19%
$ 20.99

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

$ 16.99 USD
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Alternator Pulley
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:52164889
Part#: 12317560483
In Stock
New Item
Sale - Save 50% $ 44.99

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

$ 22.50 USD
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$ 44.99

This product was last offered at the strikethrough price on
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$ 22.50 USD
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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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Rein - Corporate Logo
T#:45997481
Part#: PKP0246
Ships in 4 Business Days
Sale - Save 6% $ 64.99

This product was last offered at the strikethrough price on
08-31-2026

$ 61.00 USD
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Sale - Save 6%
$ 64.99

This product was last offered at the strikethrough price on
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$ 61.00 USD
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Plastic power steering pump pulleys can wear over time or even crack. If you are replacing your pump or if your pulley has worn or failed, upgrade to this aluminum pulley from OEM Rein.