BMW Drive Belts & V-Belts for BMW 3 Series F34 (2014+)

Clear BMW chassis

Please ensure your correct model is selected

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.

Sub-Categories

Sort By:

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

Show More Show Less
Packaged by Turner - Corporate Logo
T#:22097553
Part#: 11287628661TKT
In Stock
Sale - Save 23% $ 131.99

This product was last offered at the strikethrough price on
06-16-2026

$ 101.98 USD
Free Shipping on orders $49 and up
Sale - Save 23%
$ 131.99

This product was last offered at the strikethrough price on
06-16-2026

$ 101.98 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!
Show More Show Less
OEM INA Accessory Belt Tensioner Assembly - N55 S55
We Price Match - Give Us A Call or Chat!
Ina - Corporate Logo
T#:394063
Part#: 11288604266
In Stock
$ 79.99

This product was last offered at the strikethrough price on
06-08-2026

$ 60.99 USD
Free Shipping on orders $49 and up
$ 60.99 USD
Free Shipping on orders $49 and up

Pulleys begin to squeak once they are reaching the end of their life span and the tensioners can fail, no longer applying enough tension to the accessory belt. If not replaced, tese can seize up and lead to a long host of problems that would leave you stranded on the side of the road. Prevent this with routine maintenance and replace your belts and pulleys every 50,000 miles to ensure continued reliability.

Fits the following BMW chassis:
F22/23 F87 F3X F07/10/11 F06/12/13 F01/02 F25/26 E70/71 F15/16

Fits the following BMW engines:
N55 3.0L, S65 3.0L

Show More Show Less

OEM INA Deflection Pulley - N55 3.0L, S55 3.0L
We Price Match - Give Us A Call or Chat!
Ina - Corporate Logo
T#:554453
Part#: 11288673720
In Stock
$ 45.99 USD
Free Shipping on orders $49 and up
Pulleys begin to squeak once they are reaching the end of their life span and if not replaced, can seize up and lead to a long host of problems that would leave you stranded on the side of the road.

Belt - Serpentine Belt - F30,F32,F33,F34,F36,F10,F12 +
We Price Match - Give Us A Call or Chat!
Continental - Corporate Logo
T#:22239
Part#: 11287628661
In Stock
$ 37.59 USD
Free Shipping on orders $49 and up
This serpentine belt ( 8Pk 1390) drives the Air conditioning, Alternator, and power steering system for BMW's with the N55 engine. We recommend replacing the AC / Alternator / Power Steering belt every 80,000 miles.

This item fits the following BMWs:
2014+ F22 BMW M235i M235i xDrive
2014+ F23 BMW M235i
2011+ F25 BMW X3 xDrive35i
2015+ F26 BMW X4 xDrive35i
2012+ F30 BMW 335i 335i xDrive - Sedan
2013+ F32 BMW 435i 435i xDrive - Coupe
2013+ F33 BMW 435i Convertible 435i xDrive Convertible- Convertible
2014+ F34 BMW 335i xDrive GT - Gran Tourismo
2014+ F36 BMW 435i Gran Coupe 435i xDrive Gran Coupe
2011+ F10 BMW 535i - NOT for cars with Dynamic Drive
2010+ F07 BMW 535i GT
2012+ F12 BMW 640i - NOT for cars with Dynamic Drive<
2013+ F06 BMW 640i Gran Coupe - NOT for cars with Dynamic Drive<
2009+ F01 BMW 740i 740li - NOT for cars with Dynamic Drive<
2011-2013 E70 BMW X5 xDrive35i
2011-2013 E71 BMW X6 xDrive35i
2014+ F15 BMW X5 xDrive35i - NOT for cars with Dynamic Drive<
2015+ F16 BMW X6 sDrive35i X6 xDrive35i - NOT for cars with Dynamic Drive<
Show More Show Less
OEM INA Accessory Belt Tensioner Assembly - BMW N20 2.0L
We Price Match - Give Us A Call or Chat!
Ina - Corporate Logo
T#:587382
Part#: 11287594969
In Stock
$ 72.99

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

$ 43.99 USD
Free Shipping on orders $49 and up
$ 43.99 USD
Free Shipping on orders $49 and up
This is the main belt tensioner for the accessory belt.

Accessory Belt Tensioner Assembly
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
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
Free Shipping on orders $49 and up
Sale - Save 7%
$ 51.99

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

$ 48.59 USD
Free Shipping on orders $49 and up
Conti Tech AC & Alternator Accessory Belt - N20 2.0L
We Price Match - Give Us A Call or Chat!
Continental - Corporate Logo
T#:379606
Part#: 11287618848
Ships in 1 Business Day
$ 40.95 USD
Free Shipping on orders $49 and up
OEM replacement A/C & Alternator accessory belt.

Accessory Belt Tensioner - Mechanical
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
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
Free Shipping on orders $49 and up
Sale - Save 20%
$ 93.99

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

$ 75.06 USD
Free Shipping on orders $49 and up

Packaged by Turner - Corporate Logo
T#:22097555
Part#: 11287618848TKT
In Stock
Sale - Save 34% $ 106.99

This product was last offered at the strikethrough price on
06-01-2026

$ 70.48 USD
Free Shipping on orders $49 and up
Sale - Save 34%
$ 106.99

This product was last offered at the strikethrough price on
06-01-2026

$ 70.48 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 and an OEM tensioner assembly. 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 tensioner and upgrading your accessory belt is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!
Show More Show Less
Deflection Pulley
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
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
Free Shipping on orders $49 and up
Sale - Save 10%
$ 27.99

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

$ 25.19 USD
Free Shipping on orders $49 and up
Accessory Belt Tensioner Assembly
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
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
Free Shipping on orders $49 and up
Sale - Save 15%
$ 47.99

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

$ 40.79 USD
Free Shipping on orders $49 and up


Packaged by Turner - Corporate Logo
T#:22097533
Part#: 11288613707TKT
Ships on Nov 12, 2026
Sale - Save 24% $ 137.99

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

$ 105.35 USD
Free Shipping on orders $49 and up
Sale - Save 24%
$ 137.99

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

$ 105.35 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 the hardware required to install the 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!
Show More Show Less
OEM Continental Accessory Belt - 11288646475
We Price Match - Give Us A Call or Chat!
Continental - Corporate Logo
T#:30430716
Part#: 6PK1165
Ships in 2 Business Days
$ 27.99

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

$ 26.99 USD
Free Shipping on orders $49 and up
$ 26.99 USD
Free Shipping on orders $49 and up

Accessory drive belts are essential for keeping your engine's components running smoothly off the crank pulley. These belts power the generator, fans, water pumps, and AC compressors, ensuring everything functions properly. If your drive belt shows signs of aging, such as cracking, glazing, or squeaking, it's time for a replacement.

Signs of wear are easy to spot. The underside of the belt will start to glaze, reducing its effectiveness. Cracks can develop on the back due to "dry rot" from exposure to engine heat or age. Squealing noises indicate the belt is slipping on the pulleys. In any of these cases, it's clear your vehicle needs a new belt.

Our drive belt is designed for long-lasting performance, keeping your accessories running efficiently. A worn belt can cause your accessories to work below their optimal capacity. Don't wait for a belt failure—include it in your next maintenance plan to ensure your vehicle remains in top condition.

Show More Show Less
Accessory Belt Service Kit - F3X F2X B46/B48
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:30430718
Part#: 11288646475KT2
Ships in 2 Business Days
Sale - Save 19% $ 130.99

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

$ 105.75 USD
Free Shipping on orders $49 and up
Sale - Save 19%
$ 130.99

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

$ 105.75 USD
Free Shipping on orders $49 and up

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!

Show More Show Less

Continental - Corporate Logo
T#:29765763
Part#: 6PK1153
In Stock
$ 25.99

This product was last offered at the strikethrough price on
09-02-2026

$ 17.99 USD
Free Shipping on orders $49 and up
$ 17.99 USD
Free Shipping on orders $49 and up
Accessory drive belts keep everything turning off of the crank pulley. Generator, fans, water pumps and AC compressors all rely on this belt to keep everything working properly. If your drive belt is getting old, cracking, glazing, or squeaking, replace it. It's easy to see when the belts are beginning to wear. Visually, the belt will begin to glaze on the underside, making it far less effective. Cracks can appear on the back of the belt from “dry rot” caused by exposure to engine heat or age. Squealing is common on worn belts which basically means that the belt is slipping on pulleys. In either case, your vehicle needs a new belt. Designed for long life, this belt will keep everything turning great and all of your accessories working properly. With a worn belt, accessories aren't working at maximum efficiency. Do not wait for this belt to break to replace. Replace it as part of your next maintenance plans.
Show More Show Less

Vaico - Corporate Logo
T#:50346424
Part#: 11288580360
Special Order: No Guaranteed ETA
$ 68.99 USD
Free Shipping on orders $49 and up
$ 68.99 USD
Free Shipping on orders $49 and up
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.
Show More Show Less