Drive Belt Service for BMW Z Series E85/6 (2003-2008)

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Drive belts should be inspected and changed regularly to avoid further complications. We offer Genuine BMW and other aftermarket brands that we trust or know to be OE manufacturers. We like to make it easy on you and do all the research for you - check out our Drive Belt Service kits.

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Packaged by Turner - Corporate Logo
T#:23482931
Part#: S54KEVACCKT
Ships in 7 Business Days
Sale - Save 3% $ 333.99

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

$ 323.77 USD
Free Shipping on orders $49 and up
Sale - Save 3%
$ 333.99

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

$ 323.77 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 Belts, tensioner assemblies, and new tensioner pulleys. 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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Packaged by Turner - Corporate Logo
T#:30430694
Part#: 11287636372KT2
Back Ordered
$ 284.99 USD
Free Shipping on orders $49 and up

Don't let a failed accessory belt leave you stranded! Over time, your belt and tensioner wear out, risking your alternator's ability to charge and your vehicle's reliability. Turner Motorsport offers a comprehensive solution with our convenient belt drive service kit, ensuring you have everything needed to maintain your belt drive system and keep your BMW running smoothly.

Key Features:

Complete Solution: Includes all essential components for servicing your belt drive system. Enhanced Reliability: Prevents unexpected failures, keeping you off the side of the road. Optimized Performance: Ensures your alternator and other accessories function efficiently. For a detailed list of included components, please refer to the "Kit Contents" tab.

Maintain your BMW's performance and reliability with the Turner Motorsport belt drive service kit!

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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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ECS - Corporate Logo
T#:363707
Part#: 001977ECS03A
In Stock
Sale - Save 5% $ 104.99

This product was last offered at the strikethrough price on
06-13-2026

$ 99.74 USD
Free Shipping
Sale - Save 5%
$ 104.99

This product was last offered at the strikethrough price on
06-13-2026

$ 99.74 USD
Free Shipping
Most of the pulleys on your BMW engine are plastic, which become brittle and frail over time and from engine bay heat. A failed pulley could leave you stranded which is why it is vital to inspect the pulleys during routine maintenance. This is an aluminum version of the stock water pump pulley used on the M50/M52/M52TU/M54 engine in the E36, E46, Z3, Z4, and other models. It uses the same hardware and the original belt as the stock plastic pulley. But the aluminum will last much longer.
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ECS - Corporate Logo
T#:20979672
Part#: 6PK1460
In Stock
$ 33.99 USD
Free Shipping on orders $49 and up
Replaces BMW # 11287837898 ECS Tuning Performance Kevlar reinforced belts give you that extra piece of mind! 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. ECS Tuning Performance Kevlar reinforced belts have been put through a series of multiple tests such. Tensile strength Elongation Hardness Temperature and oil resistance per standard JASO E 109-94 Flex testing per SAE J2432.
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ECS - Corporate Logo
T#:23416515
Part#: 5PK830
Ships in 7 Business Days
$ 26.99 USD
Free Shipping on orders $49 and up
Replaces BMW # 11287830946 ECS Tuning Performance Kevlar reinforced belts give you that extra piece of mind! 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. ECS Tuning Performance Kevlar reinforced belts have been put through a series of multiple tests such. Tensile strength Elongation Hardness Temperature and oil resistance per standard JASO E 109-94 Flex testing per SAE J2432.
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ECS - Corporate Logo
T#:367060
Part#: 002778ECS01
Ships on Dec 7, 2026
Sale - Save 10% $ 100.99

This product was last offered at the strikethrough price on
06-13-2026

$ 90.89 USD
Free Shipping
Sale - Save 10%
$ 100.99

This product was last offered at the strikethrough price on
06-13-2026

$ 90.89 USD
Free Shipping
Most of the pulleys on your BMW engine are plastic, which become brittle and frail over time and from engine bay heat. A failed pulley could leave you stranded which is why it is vital to inspect the pulleys during routine maintenance. This is an aluminum version of the stock water pump pulley used on the S54 engine in the E46 M3, MZ3, and Z4M. It's the same size and uses the same hardware and the original belt as the stock plastic pulley. But the aluminum will last much longer.
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Hydraulic Alternator Belt Tensioner Assembly
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:396757
Part#: 11287838797
In Stock
$ 53.99 USD
Free Shipping on orders $49 and up

ECS - Corporate Logo
T#:20979670
Part#: 4PK863
In Stock
$ 26.99 USD
Free Shipping on orders $49 and up
$ 26.99 USD
Free Shipping on orders $49 and up
Replaces BMW # 11287512762, 11281437450, and 11281437872 ECS Tuning Performance Kevlar reinforced belts give you that extra piece of mind! 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. ECS Tuning Performance Kevlar reinforced belts have been put through a series of multiple tests such. Tensile strength Elongation Hardness Temperature and oil resistance per standard JASO E 109-94 Flex testing per SAE J2432.
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Water Pump Pulley
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:638798
Part#: 11517840403
Ships in 1 Business Day
$ 57.99 USD
Free Shipping on orders $49 and up
Crankshaft Pulley With Vibration Damper
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:593668
Part#: 11237564969
Ships in 1 Business Day
$ 234.99 USD
Free Shipping
$ 234.99 USD
Free Shipping
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 synch 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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Belt Tensioner Conversion Kit
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:600039
Part#: 11287838797K
Back Ordered
$ 82.99

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

$ 65.99 USD
Free Shipping on orders $49 and up
$ 65.99 USD
Free Shipping on orders $49 and up
Update from a mechanical tensioner to a hydraulic style tensioner


Corteco - Corporate Logo
T#:591600
Part#: 11237564969
Ships in 1 Business Day
$ 355.99 USD
Free Shipping
$ 355.99 USD
Free Shipping
Reduces vibrations and connects accessories
Corteco - Corporate Logo
T#:591599
Part#: 11237513862
Ships in 1 day
$ 156.63 USD
Free Shipping
$ 156.63 USD
Free Shipping
Reduces vibrations and connects accessories