BMW Drive Belts & V-Belts for BMW Z4 M Roadster S54 (2003-2008)

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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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Hydraulic Alternator Belt Tensioner Assembly
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
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$ 53.99 USD
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Water Pump Pulley
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 2 Business Days
$ 57.99 USD
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$ 57.99 USD
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Belt Tensioner Conversion Kit
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
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$ 65.99 USD
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Update from a mechanical tensioner to a hydraulic style tensioner
Mechanical A/C Belt Tensioner Assembly
Mechanical A/C Belt Tensioner Assembly
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:361998
Part#: 11281433571
Ships in 2 Business Days
$ 53.99 USD
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$ 53.99 USD
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Complete tensioner assembly with roller
Accessory Belt Service Kit w/ Kevlar Reinforced Belt - E46 M3, Z3M, Z4M S54 3.2L
Accessory Belt Service Kit w/ Kevlar Reinforced Belt - E46 M3, Z3M, Z...
Packaged by Turner - Corporate Logo
T#:23482931
Part#: S54KEVACCKT
Ships in 9 Business Days
Sale - Save 3% $ 333.99

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

$ 323.77 USD
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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
Add to Wish List
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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Drive Belt Pulley Cap
Drive Belt Pulley Cap
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:639224
Part#: 11281727159
In Stock
$ 3.99 USD
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$ 3.99 USD
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Replace that missing protective cap and protect your belt tensioner bearing from debris.
Meyle - Auxiliary Belt - E46, E90, E92, E93, Z3, Z4
Meyle - Auxiliary Belt - E46, E90, E92, E93, Z3, Z4
Meyle - Corporate Logo
T#:40546016
Part#: 11287830945
Special Order: No Guaranteed ETA
$ 15.99 USD
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$ 15.99 USD
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A high-quality, OE-style replacement serpentine belt designed to deliver reliable power to critical engine components, ensuring optimal performance and durability.

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