BMW Drive Belts & V-Belts for BMW 3 Series E93 (2007-2013)

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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
In Stock
Sale - Save 25% $ 132.99

This product was last offered at the strikethrough price on
06-14-2026

$ 99.99 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 132.99

This product was last offered at the strikethrough price on
06-14-2026

$ 99.99 USD
Free Shipping on orders $49 and up

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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URO Premium - Corporate Logo
T#:592384
Part#: 32427537862
In Stock
$ 63.99 USD
Free Shipping on orders $49 and up
Commonly damaged during pump removal, the power steering pulley needs to be perfectly true and round to avoid throwing a belt. Replacement alleviates problems associated with a damaged pulley.
Aluminum Power Steering Pulley
2X Entries Into Our F80 M3 Sweepstakes
URO Premium - Corporate Logo
T#:587735
Part#: 32427838220PRM
In Stock
$ 70.99 USD
Free Shipping on orders $49 and up
Replacement power steering pump pulley

URO - Corporate Logo
T#:48573724
Part#: 11287835417
Ships in 1 Business Day
$ 120.11 USD
Free Shipping on orders $49 and up
Hydraulic Belt Tensioner for E9x M3 with S65 engine and E60 M5, E63 M6 with S85 engine. This oil-filled tensioner keeps the main drive belt in the proper tension. Over time, the seals wear, allowing fluid to leak out and the tensioner then becomes frozen or inoperable. Replacement is the best corrective action to take. This can be done during any belt or pulley service or anytime the fan is off the engine.
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URO Premium - Corporate Logo
T#:587734
Part#: 32427553955PRM
In Stock
$ 51.99 USD
Free Shipping on orders $49 and up

Aluminum Power Steering Pulley - Priced Each | BMW E8X E9X N54 3.0L is a high-quality replacement pulley designed to restore optimal performance to your BMW's power steering system. This durable, aluminum pulley ensures smooth operation of the power steering pump, making steering more responsive and efficient. Whether your vehicle is equipped with active steering or not, this pulley is designed for a perfect fit and enhanced performance, ensuring long-lasting reliability and reducing the risk of premature failure.

  • Direct replacement for the power steering pump pulley in BMW E8X and E9X N54 3.0L models
  • Compatible with both active and non-active steering systems
  • Made from lightweight, durable aluminum for improved performance and longevity
  • Designed to ensure smooth and precise steering responsiveness
  • Reduces wear on the power steering pump and extends its service life
  • Easy installation with OEM-level fitment for hassle-free replacement
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Accessory Belt Tensioner Assembly
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:591622
Part#: 11287563927
In Stock
$ 60.99 USD
Free Shipping on orders $49 and up
This is the main belt tensioner for A/C, Alternator, and power steering.

URO Upper Idler Pulley - BMW N54 3.0L
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:591621
Part#: 11287556251
In Stock
$ 28.89

This product was last offered at the strikethrough price on
10-08-2026

$ 23.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 28.89

This product was last offered at the strikethrough price on
10-08-2026

$ 23.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
The higher idler pulley
Bav Auto Ratcheting Serpentine Belt Wrench Kit
10X Entries Into Our F80 M3 Sweepstakes
Bav Auto Tools - Corporate Logo
T#:580390
Part#: B8800077
In Stock
Sale - Save 7% $ 67.99

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

$ 62.99 USD
Free Shipping on orders $49 and up
Sale - Save 7%
$ 67.99

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

$ 62.99 USD
Free Shipping on orders $49 and up
Used to retract your serpentine belt tensioner. This kit includes 18mm, 5/8 in, 14mm, 13mm, 12mm, sockets and 3/8 in and 1/4 in drive adapters

Idler Pulley
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:37892100
Part#: 11287578675
Ships in 1 Business Day
$ 28.54 USD
Free Shipping on orders $49 and up
The idler pulley serves as a guide and support for the serpentine belt, ensuring it runs smoothly over the entire system.

Lower Idler Pulley
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:384427
Part#: 11287557851
Ships in 1 Business Day
$ 23.99 USD
Free Shipping on orders $49 and up
The lowest of the idler pulleys on the accessory drive belt. Featuring NTN/NSK bearing.
URO - Corporate Logo
T#:591618
Part#: 11287530314
Ships in 1 Business Day
$ 48.99 USD
Free Shipping on orders $49 and up
Complete tensioner assembly
Accessory Belt Tensioner Assembly
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:583971
Part#: 11287582946
Ships in 1 Business Day
$ 46.99 USD
Free Shipping on orders $49 and up


Deflection Pulley
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:591619
Part#: 11287535860
Back Ordered
$ 17.99 USD
Free Shipping on orders $49 and up
Commonly replaced when servicing belts or cooling system, or when it begins to make noise.
URO A/C Idler Pulley - BMW E82/88 E84 E9X N55 3.0L
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:43446142
Part#: 11287578674
Ships in 1 Business Day
$ 25.99 USD
Free Shipping on orders $49 and up
Commonly replaced when servicing belts or the cooling system, or when it begins to make noise.