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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Turner Motorsport Power Pulley Upgrade Kit - Z4 M Roadster & Coup...
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Turner Motorsport - Corporate Logo
T#:3465
Part#: PPK-MZ4
Ships in 5 Business Days
Sale - Save 25% $ 347.99

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

$ 260.99 USD
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Sale - Save 25%
$ 347.99

This product was last offered at the strikethrough price on
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$ 260.99 USD
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Underdrive Power Pulleys work to 'free up' horsepower. Any accessory that spins from the main drive belt is using up power. That's power that could otherwise be used to move the car. By giving some of that power back to the engine, you can make the car faster! It's like FREE HORSEPOWER !

Underdrive pulleys for your BMW will slow down engine-mounted accessories - the water pump, power steering pump, and alternator*. These systems contribute to 'parasitic losses' - power lost from what the engine could produce if it did not have these systems. Since less energy is used to move them, that power is transferred back to the engine and used to propel the car. Our pulleys give a 10-20% reduction in rotation, releasing up to 11hp on most BMW six-cylinder engines. There's also a small but noticeable improvement in throttle response too! We have done extensive testing and development work, both on and off the track, to ensure that the accessory systems function as they should. On our Racing pulley kits we actually underdrive certain components more so we feel our Street pulleys are an ideal compromise between power/torque gains, reliability, and system performance. Our pulley kits have been on the market for over ten years, and used in all of our own cars, with zero component failures related to their use.

Our pulleys are made from T-6061 aluminum and finished in a durable black hard anodize that is very resistant to wear, chemical exposure, and heat. We designed our pulleys to look similar to the factory parts but also to be stronger and, in most cases, slightly lighter too. For example, With our hardcoat aluminum you will never have to worry about a serious failure of a stock plastic pulley. A 'stealth' approach to aesthetics was our goal and we let the results speak for the pulley design. Installation is straight forward and easy with simple hand tools. Removal of the fan is required for access to the front of the engine. Total install time for a 3-piece pulley set should be around 1.5 hours. A new longer belt is included and we also recommend replacing the separate A/C belt, belt tensioners, and the guide and deflection pulleys at the same time.



Additional Info
Clickhere for example dyno graph

Click here for installation instructions.

Turner Pulley Kit contents:
  • Turner water pump pulley
  • Turner power steering pump pulley
  • new extended length belt
  • instructions

    This underdrive pulley kit fits the following BMW:
    2006-2008 MZ4 Z4 M Coupe / Z4 M Roadster
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    OEM Continental Drive Belt - Alternator/Water Pump - E46 E9X Z3 Z4 ...
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    Continental - Corporate Logo
    T#:3027
    Part#: 11287837898
    In Stock at Vendor
    $ 31.22 USD
    Free Shipping on orders $49 and up
    This serpentine belt drives the water pump, alternator and power steering systems for BMW E46 M3, E90 E92 E93 M3, Z3 M Roadster M Coupe 2001-2002 with S54 engine and Z4 M Roadster, Z4 M Coupe. It is also known as a main drive belt.
    Show More Show Less
    OEM Ruville Hydraulic Belt Tensioner - E36 E46 E39 E60 X3 X5 Z3 Z4 ...
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    Ruville - Corporate Logo
    T#:11475
    Part#: 11287838797
    In Stock
    $ 97.99 USD
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    $ 97.99 USD
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    This OEM Ruville hydraulic tensioner assembly is designed to keep the serpentine belt at the correct pressure against the pulleys. Many BMW's can have either a hydraulic or mechanical belt tensioner. Please check to see which tensioner type you need before ordering.

    OEM Schaeffler (INA, LuK, Ruville, & FAG) is an engineering company that focuses on high-performance, precision manufacturing. With their individual brands INA, Luk, and FAG providing exceptionally high quality parts directly to BMW, as well as countless other automotive companies, their history of reliability and variety of offered parts makes Schaeffler a go-to replacement parts provider for all of us here at Turner Motorsport.

    As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!


    This item fits the following BMWs:
    1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
    1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
    1991-1995 E34 BMW 525i
    1997-2003 E39 BMW 525i 528i 530i

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    ECS Tuning Performance Kevlar Reinforced Accessory Belt - Water Pump ...
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    ECS - Corporate Logo
    T#:20979672
    Part#: 6PK1460
    In Stock
    $ 32.99 USD
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    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 Tuning Performance Kevlar Reinforced Accessory Belt - A/C - E46 M...
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    ECS - Corporate Logo
    T#:23416515
    Part#: 5PK830
    Ships in 7 Business Days
    $ 25.99 USD
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    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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    OEM INA A/C Belt Tensioner with Pulley - BMW E46 E39 E53 Z3 Z4 ...
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    Ina - Corporate Logo
    T#:2479
    Part#: 11281433571
    In Stock at Vendor
    $ 62.17 USD
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    $ 62.17 USD
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    This is an OEM INA AC Belt Tensioner with pulley for all 2001-2006 E46 M3, as well as all 1999-2002 non-M E46 3 series models. These belt tensioner units are known to fail, and include the tensioner pulley (as shown).

    OEM Schaeffler (INA, LuK, & FAG) is an engineering company that focuses on high-performance, precision manufacturing. With their individual brands INA, Luk, and FAG providing exceptionally high quality parts directly to BMW, as well as countless other automotive companies, their history of reliability and variety of offered parts makes Schaeffler a go-to replacement parts provider for all of us here at Turner Motorsport.

    As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

    This Air Conditioning / AC Belt Tensioner with Pulley fits:
    1999-2000 E46 3 Series 323i, 323Ci, 328i, 328Ci
    2001-2002 E46 3 Series 325i, 325Ci, 330i, 330Ci
    2001-2006 E46 M3 coupe & convertible

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    E46 M3, Z4M ECS Tuning Aluminum Water Pump Pulley
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    ECS - Corporate Logo
    T#:367060
    Part#: 002778ECS01
    Ships on Oct 22, 2026
    Sale - Save 10% $ 98.99

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

    $ 89.09 USD
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    Sale - Save 10%
    $ 98.99

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

    $ 89.09 USD
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    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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    Genuine BMW Idler Pulley - Multiple BMWs
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    Genuine BMW - Corporate Logo
    T#:11477
    Part#: 11287841228
    Ships in 3 Business Days
    8% off MSRP $ 123.34

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 113.39 USD
    Free Shipping on orders $49 and up
    8% off MSRP
    $ 123.34

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 113.39 USD
    Free Shipping on orders $49 and up
    This is a Genuine BMW Upper Idler Pulley, also known as the roller pulley or deflection pulley. The upper and lower idler pulleys are known to be the primary sources for 'belt squealing'. The pulley is also encased in rubber which will crack over time. If left without service the rubber could fail completely, chucking the belt and leaving you stranded. Replacement is a very simple procedure and can be done anytime the fan is off the engine (belt replacement, water pump service, alternator replacement, etc).
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    OEM Febi Hydraulic Alternator Belt Tensioner Assembly - E34 E39 E53 ...
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    We Price Match - Give Us A Call or Chat!
    Febi - Corporate Logo
    T#:363804
    Part#: 11287838797
    Ships on Sep 2, 2026
    $ 83.99 USD
    Free Shipping
    $ 83.99 USD
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    The Hydraulic Alternator Belt Tensioner is exposed to a lot of dirt, salt, and other debris due to its front lower location. This can cause the tensioner to seize and not allow the belt tensioner to adjust. Replace your belt tensioner with this OEM high quality hydraulic tensioner for many years of reliable operation to come.
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    Hydraulic Alternator Belt Tensioner Assembly
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    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
    Mechanical A/C Belt Tensioner Assembly
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    Bremmen Parts - Corporate Logo
    T#:26305100
    Part#: 11281433571
    In Stock
    Sale - Save 21% $ 59.99

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

    $ 47.32 USD
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    Sale - Save 21%
    $ 59.99

    This product was last offered at the strikethrough price on
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    $ 47.32 USD
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    S54 VAC Harmonic SuperDamper By ATI - Standard Size Crank Pulley ...
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    ATI Performance Products - Corporate Logo
    T#:639878
    Part#: VAC-HPCDK-S54-ST
    In Stock
    $ 1,049.99 USD
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    $ 1,049.99 USD
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    If you are breaking crankshafts and oil pumps, the cause may be a mystery to you as it has been to many of our customers. We know that controlling the harmonic resonance of the BMW 6 is highly important as RPMs rise, but the ideal configuration of the inline-6 motor makes even experienced engine builders overlook some fundamental principals of engine harmonics that can be destructive. ATI Performance Products has partnered with VAC Motorsports to develop new dampers for BMW 2.5L, 2.8L, 3.0L and 3.2L straight-6 engines found in the E36 and E46 M3, E9X and E6X, as well as newer Z3s and Z4s. These dampers eliminate crankshaft harmonic vibration, which allows the engine to produce more horsepower and torque, while also reducing internal engine wear at the same time. Broken oil pumps and timing chains will be a thing of the past! When used with a VAC accessory pulley, these dampers are a direct replacement over the OEM balancer. They have a 7” outer diameter and include OEM style timing alignment tabs. BMW enthusiasts should know that all ATI Super Dampers exceed SFI 18.1 Safety Certification and are approved for competition. The advantages of the ATI SuperDamper include eliminating vibration issues with inline 6 engines equipped with lightweight clutch and flywheel assemblies, reduced bearing, engine accessories, oil pump wear, and compatibility with underdrive pulleys. Made in the USA.
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    Genuine BMW Hydraulic Alternator Belt Tensioner Assembly
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    Genuine BMW - Corporate Logo
    T#:360630
    Part#: 11287838797
    Ships in 3 Business Days
    7% off MSRP $ 304.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 284.99 USD
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    7% off MSRP
    $ 304.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 284.99 USD
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    Genuine BMW Hydraulic Alternator Belt Tensioner Roller
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    Genuine BMW - Corporate Logo
    T#:360611
    Part#: 11281748131
    Ships in 3 Business Days
    4% off MSRP $ 82.54

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 78.99 USD
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    4% off MSRP
    $ 82.54

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 78.99 USD
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    BMW Power Steering Pully - 32427830838
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    Atlantic Automotive Engineering - Corporate Logo
    T#:45757458
    Part#: 32427830838
    Ships in 2 Business Days
    $ 50.99 USD
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    A new power steering pulley is key to keeping your steering system smooth and reliable. Over time, pulleys can warp, crack, or wear, causing belt slippage, whining noises, or even pump failure. Installing a fresh pulley restores correct belt alignment, eliminates noise, and maintains consistent hydraulic pressure for precise, effortless steering. Why choose a new pulley? Smooth operation – Ensures proper belt tension for dependable pump performance. Noise reduction – Eliminates squealing, whining, or vibration from worn pulleys. System protection – Protects the pump and steering components from damage. Install a new pulley and keep your steering system running quietly, efficiently, and confidently.
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    Belt - Main Drive Belt for Turner Pulley Kit - E46 M3, MZ3 S54, Z4 M ...
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    Genuine BMW - Corporate Logo
    T#:16560
    Part#: 11281437475
    Ships in 5 Business Days
    $ 21.99

    This product was last offered at the strikethrough price on
    05-22-2026

    $ 20.99 USD
    Free Shipping on orders $49 and up
    $ 20.99 USD
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    This is the main drive belt / serpentine belt 6PK x 1538 that is used with the Turner Motorsport Power Pulley Kit (PPK-S54) . This is not for replacing the belt on a car that doesn't have the Turner Pulley Kit. This belt drives all of the engine auxillaries, such as the alternator, waterpump, and power steering pump. If your belt has excessive cracks, dry rot, missing teeth and/or grooves, or are causing noise, it's time for a new one. Alternate Part #11281706545.
    When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

    This item fits the following BMWs with the Turner Power Pulley Kit:
    2001-2006 E46 BMW M3 coupe & convertible
    2001-2002 Z3 Z3 M Roadster / Z3 M Coupe (S54 engine)
    2006-2008 E85 E86 Z4 M Roadster / Z4 M Coupe
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    Genuine BMW Accessory Belt - Alternator/Water Pump - E46 E9X Z3 Z4 ...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Genuine BMW - Corporate Logo
    T#:360628
    Part#: 11287837898
    Ships in 3 Business Days
    15% off MSRP $ 60.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 51.99 USD
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    15% off MSRP
    $ 60.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 51.99 USD
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    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.
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    OEM INA Hydraulic Belt Tensioner - E36, E46, E39 6-cyl
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    Ina - Corporate Logo
    T#:1603
    Part#: 11281717188
    In Stock
    $ 78.29

    This product was last offered at the strikethrough price on
    03-21-2026

    $ 56.99 USD
    Free Shipping
    $ 56.99 USD
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    For Alternator / Water Pump Belt

    Hydraulic Belt Tensioner for E36, E46, E39 6-cyl models. This is the oil-filled tensioner that keeps the main drive belt in the proper tension. Over time the piston seals inside allow fluid to leak out. The tensioner 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.

    OEM Schaeffler (INA, LuK, & FAG) is an engineering company that focuses on high-performance, precision manufacturing. With their individual brands INA, Luk, and FAG providing exceptionally high quality parts directly to BMW, as well as countless other automotive companies, their history of reliability and variety of offered parts makes Schaeffler a go-to replacement parts provider for all of us here at Turner Motorsport.

    As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!


    NOTE: These BMW's may have been equipped with either a mechanical or hydraulic tensioner. Only for cars with Hydraulic Belt Tensioners. Please check before ordering.

    This tensioner pulley fits the following BMWs:
    1991-1995 E34 525i (M50 engine)
    1992-1999 E36 325i, 325is, 328i, 328is, 323is
    1995-1999 E36 M3 (M3 3.0 & M3 3.2 liter)
    1997-2003 E39 525i, 528i, 530i
    1999-2000 E46 323i, 323Ci, 328i, 328Ci
    2001-2005 E46 325i, 325Ci, 325xi, 330i, 330Ci, 330xi
    2001-2006 E46 M3 coupe & convertible
    2000-2006 X5 3.0 liter (E53 chassis)
    2006 525i, 530i(M54 engine)
    1997-2002 Z3 & MZ3 2.8, M Roadster, M Coupe
    2003-2009 Z4 M Coupe and Roadster

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    Water Pump Pulley
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    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
    Free Shipping on orders $49 and up
    OEM Febi Idler Pulley - Multiple BMWs
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    We Price Match - Give Us A Call or Chat!
    Febi - Corporate Logo
    T#:382342
    Part#: 11287841228
    Ships on Sep 22, 2026
    $ 48.99 USD
    Free Shipping on orders $49 and up
    $ 48.99 USD
    Free Shipping on orders $49 and up
    This is an OEM Febi Upper Idler Pulley, also known as the roller pulley or deflection pulley. The upper and lower idler pulleys are known to be the primary sources for 'belt squealing'. The pulley is also encased in rubber which will crack over time. If left without service the rubber could fail completely, chucking the belt and leaving you stranded. Replacement is a very simple procedure and can be done anytime the fan is off the engine (belt replacement, water pump service, alternator replacement, etc).
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    Rogue Engineering Power Pulley Set - S54 - E46 M3, Z3/Z4 M
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    Rogue Engineering - Corporate Logo
    T#:553971
    Part#: PP.S54
    Ships in 4 Business Days
    $ 259.00 USD
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    $ 259.00 USD
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    Rogue Engineering has developed a power pulley kit that reduces the drag on specific pulleys while allowing others to remain at their same efficiency. This allows for perfect operation in daily driven vehicles without a hiccup or stutter. However, when the demand for power is requested, the power pulley kit allows for the freed power to become apparent.  The term "power" pulley is a bit of a misnomer. Underdrive pulleys actually free up power by reducing the drag caused by the accessories.  These pulleys are based off a calculated percentage from factory dimensions, so that particular component speeds are safely reduced without affecting their true purpose.

    Rogue Engineering Power Pullies are CNC machined from 6061-T6, heat treated aluminum and specially coated with a MIL-A-8625 Type III hard coat anodize finish. This kind of anodizing is not to be confused with a Type II cosmetic anodize finish (typical colors such as red, blue, silver, green, etc.). The hard coat anodize finish actually builds a small surface layer on top of the aluminum, preventing wear.

    This part fits the following BMW engines:
    S54

    This part fits the following chassis:
    E46, Z3, Z4

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    Genuine BMW Belt tensioner adjuster bearing
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    Genuine BMW - Corporate Logo
    T#:38827
    Part#: 12311713153
    Ships in 9 Business Days
    $ 24.99 USD
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    Genuine BMW Needle Sleeve
    This item fits the following BMW Chassis:
    E36 M3,E46 M3,E85 Z4M,E34,E36,E39,E46,E53 X5 X5,E83 X3,E85 Z4,E86 Z4

    Fits BMW Engines including:
    M50,M52,M54,M56,S50,S52,S54

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    VAC Motorsports Lightweight Underdrive Power Pulley Set - S54 ...
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    VAC Motorsports - Corporate Logo
    T#:27705420
    Part#: VACUPPSS542ULG
    Ships on Jun 23, 2026
    $ 294.99 USD
    Free Shipping on orders $49 and up

    Crafted from high-grade domestic USA 6061-T6 Billet Aluminum, these pulleys are a testament to precision engineering. Rigorously tested through extensive hours of racing and street use, they've proven their reliability and performance excellence.

    Each pulley is meticulously zero-balanced and thoroughly inspected to ensure zero-runout, guaranteeing optimal performance without compromising on reliability, noise, or vibration.

    This comprehensive kit comprises a precision power steering pulley, water pump pulley, and an OE Contitech Brand drive belt. Experience a notable boost of 8hp and 7 ft/lbs. of torque to the wheels, making it ideal for stock vehicles, track cars, and even those with upgraded audio systems seeking consistent voltage output from their alternators.

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    Belt Tensioner Conversion Kit
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    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    URO - Corporate Logo
    T#:600039
    Part#: 11287838797K
    In Stock
    $ 82.99 USD
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    Update from a mechanical tensioner to a hydraulic style tensioner


    Genuine BMW Accessory Belt - Air Conditioner - S54
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    Genuine BMW - Corporate Logo
    T#:360625
    Part#: 11287830946
    Ships in 3 Business Days
    9% off MSRP $ 64.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 58.99 USD
    Free Shipping on orders $49 and up
    9% off MSRP
    $ 64.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 58.99 USD
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    Bav Auto Ratcheting Serpentine Belt Wrench Kit
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Bav Auto Tools - Corporate Logo
    T#:580390
    Part#: B8800077
    In Stock
    Sale - Save 10% $ 67.99

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

    $ 61.19 USD
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    Sale - Save 10%
    $ 67.99

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

    $ 61.19 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
    Genuine BMW Power Steering Pulley - S54
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    Genuine BMW - Corporate Logo
    T#:19787
    Part#: 32427830838
    In Stock at Vendor
    $ 167.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 136.99 USD
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    $ 136.99 USD
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    Genuine BMW Pulley
    This item fits the following BMW Chassis:
    E46 M3,E85 Z4M,E46,E85 Z4,E86 Z4


    Mechanical A/C Belt Tensioner Assembly
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    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

    Genuine BMW Mechanical A/C Belt Tensioner Assembly
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    Genuine BMW - Corporate Logo
    T#:360602
    Part#: 11281433571
    Ships in 3 Business Days
    4% off MSRP $ 229.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 220.99 USD
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    $ 229.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 220.99 USD
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    Genuine BMW Water Pump Pulley - S54 3.2L
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    Genuine BMW - Corporate Logo
    T#:19288
    Part#: 11517840403
    Ships in 3 Business Days
    $ 208.99 USD
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    $ 208.99 USD
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    Genuine BMW Pulley
    This item fits the following BMW Chassis:
    E46 M3,E85 Z4M,E46,E85 Z4,E86 Z4

    Fits BMW Engines including:
    S54


    Accessory Belt Service Kit w/ Kevlar Reinforced Belt - E46 M3, Z3M, Z...
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    Packaged by Turner - Corporate Logo
    T#:23482931
    Part#: S54KEVACCKT
    Ships in 7 Business Days
    Sale - Save 2% $ 333.99

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

    $ 328.31 USD
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    $ 333.99

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

    $ 328.31 USD
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    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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    Tensioner Pulley Cap for #11281748131
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    Genuine BMW - Corporate Logo
    T#:6729
    Part#: 11281727159
    In Stock
    $ 14.12

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    $ 14.10 USD
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    $ 14.10 USD
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    This is the Genuine BMW protection cap for the tensioner pulley # 11281748131

    Drive Belt Pulley Cap
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    URO - Corporate Logo
    T#:639224
    Part#: 11281727159
    In Stock
    $ 3.99 USD
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    Replace that missing protective cap and protect your belt tensioner bearing from debris.

    OEM INA Idler Pulley - Multiple BMWs
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    Ina - Corporate Logo
    T#:1626
    Part#: 11287841228
    In Stock
    $ 18.99 USD
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    $ 18.99 USD
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    This is an OEM INA Upper Idler Pulley, also known as the roller pulley or deflection pulley. The upper and lower idler pulleys are known to be the primary sources for 'belt squealing'. The pulley is also encased in rubber which will crack over time. If left without service the rubber could fail completely, chucking the belt and leaving you stranded. Replacement is a very simple procedure and can be done anytime the fan is off the engine (belt replacement, water pump service, alternator replacement, etc).
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    Hydraulic Alternator Belt Tensioner Roller - 11281748131
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    Bremmen Parts - Corporate Logo
    T#:30629659
    Part#: 11281748131
    In Stock
    Sale - Save 19% $ 18.99

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

    $ 15.29 USD
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    Sale - Save 19%
    $ 18.99

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

    $ 15.29 USD
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    This pulley is mounted along with the hydraulic belt tensioner but can be replaced on its own. It is used for the main drive belt on the M50-M54 family engines (M50, M50TU, M52, S52, M52TU, M54, M56, and S54 engines). This is the same belt that covers the water pump/alternator/power steering systems. Replacement is a very easy procedure (requires fan removal) and will have your engine purring in no time. Belt replacement is strongly recommended at the same time. If you have a mechanical belt tensioner, the pulley can only be replaced with a new tensioner.

    This high-quality replacement from Bremmen Parts is designed for exact fitment on your BMW. Whether you're looking to complete much-needed preventative maintenance, or replacing a failed roller, choose this component from Bremmen Parts for a lasting repair.

    If you need the hydraulic belt tensioner, click here.

    This item is 70mm Diameter. Please check the diameter before ordering.

    This tensioner pulley fits the following BMWs: 1991-1995 E34 525i (M50 engine) 1992-1999 E36 325i, 325is, 328i, 328is, 323is 1995-1999 E36 M3 (M3 3.0 & M3 3.2 liter) 1997-2003 E39 525i, 528i, 530i - Only for Hydraulic Tensioner 1999-2000 E46 323i, 323Ci, 328i, 328Ci - Only for Hydraulic Tensioner 2001-2005 E46 325i, 325Ci, 325xi, 330i, 330Ci, 330xi - Only for Hydraulic Tensioner 2001-2006 E46 M3 coupe & convertible - Only for Hydraulic Tensioner 2000-2006 X5 3.0 liter (E53 chassis) 2004 E60 525i, 530i (M54 engine) 1997-2002 Z3 & MZ3 2.5, 2.8, 3.0, M Roadster, M Coupe 2003-2009 Z4 M Coupe and Roadster

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    Genuine BMW Hex Bolt 07119904677
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    Genuine BMW - Corporate Logo
    T#:20613
    Part#: 07119904677
    In Stock
    3% off MSRP $ 6.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 6.77 USD
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    3% off MSRP
    $ 6.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 6.77 USD
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    Genuine BMW Hex Bolt
    This item fits the following BMW Chassis:
    E36 M3,E46 M3,E85 Z4M,E34,E36,E39,E46,E53 X5 X5,E63,E83 X3,E85 Z4,E86 Z4



    OEM INA Belt tensioner adjuster bearing -- M50 S50 M52 S52 M54 S54 ...
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    Ina - Corporate Logo
    T#:393585
    Part#: 12311713153
    In Stock
    $ 10.99 USD
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    The OEM INA Tensioner Bearing allows the belt tensioner arm to rotate and apply pressure to the serpentine belt. With a bad bearing, the arm may seize up and prevent the tensioner from working properly.

    OEM Schaeffler (INA, LuK, & FAG) is an engineering company that focuses on high-performance, precision manufacturing. With their individual brands INA, Luk, and FAG providing exceptionally high quality parts directly to BMW, as well as countless other automotive companies, their history of reliability and variety of offered parts makes Schaeffler a go-to replacement parts provider for all of us here at Turner Motorsport.

    As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform

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    OEM INA Tensioner Pulley for Main Drive Belt (Water Pump/Alternator/P...
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    Ina - Corporate Logo
    T#:2045
    Part#: 11281748131
    In Stock
    $ 19.99 USD
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    $ 19.99 USD
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    This is an OEM INA tensioner pulley, also known as the adjusting pulley and lower pulley. This pulley is mounted on the belt tensioner near the center of the belt assembly. The upper and lower pulleys are known to be the primary sources for 'belt squealing'. This pulley is also encased in rubber which will crack over time. If left without service the rubber could fail completely, chucking the belt and leaving you stranded. Replacement is a very simple procedure and can be done anytime the fan is off the engine (belt replacement, water pump service, alternator replacement, etc).

    This pulley is mounted along with the hydraulic belt tensioner but can be replaced on its own. It is used for the main drive belt on the M50-M54 family engines (M50, M50TU, M52, S52, M52TU, M54, M56, and S54 engines). This is the same belt that covers the water pump/alternator/power steering systems. Replacement is a very easy procedure (requires fan removal) and will have your engine purring in no time. Belt replacement is strongly recommended at the same time. If you have a mechanical belt tensioner, the pulley can only be replaced with a new tensioner.

    OEM Schaeffler (INA, LuK, & FAG) is an engineering company that focuses on high-performance, precision manufacturing. With their individual brands INA, Luk, and FAG providing exceptionally high quality parts directly to BMW, as well as countless other automotive companies, their history of reliability and variety of offered parts makes Schaeffler a go-to replacement parts provider for all of us here at Turner Motorsport.

    As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

    If you need the hydraulic belt tensioner, click here.

    This item is 70mm Diameter. Please check the diameter before ordering.

    This tensioner pulley fits the following BMWs:
    1991-1995 E34 525i (M50 engine)
    1992-1999 E36 325i, 325is, 328i, 328is, 323is
    1995-1999 E36 M3 (M3 3.0 & M3 3.2 liter)
    1997-2003 E39 525i, 528i, 530i - Only for Hydraulic Tensioner
    1999-2000 E46 323i, 323Ci, 328i, 328Ci - Only for Hydraulic Tensioner
    2001-2005 E46 325i, 325Ci, 325xi, 330i, 330Ci, 330xi - Only for Hydraulic Tensioner
    2001-2006 E46 M3 coupe & convertible - Only for Hydraulic Tensioner
    2000-2006 X5 3.0 liter (E53 chassis)
    2004 E60 525i, 530i (M54 engine)
    1997-2002 Z3 & MZ3 2.5, 2.8, 3.0, M Roadster, M Coupe
    2003-2009 Z4 M Coupe and Roadster

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    Continental Belt - A/C Compressor 5K X 829 - E46 Z3 Z4
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    Continental - Corporate Logo
    T#:595101
    Part#: 11287830946
    Ships in 7 Business Days
    $ 20.59

    This product was last offered at the strikethrough price on
    05-10-2026

    $ 16.99 USD
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    $ 16.99 USD
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    Genuine BMW Hydraulic Alternator Belt Tensioner
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    Genuine BMW - Corporate Logo
    T#:360606
    Part#: 11281717188
    Ships in 3 Business Days
    7% off MSRP $ 165.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 154.99 USD
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    7% off MSRP
    $ 165.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 154.99 USD
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    Air Conditioner Serpentine Belt - E46 M3
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    Continental - Corporate Logo
    T#:1282
    Part#: 11287830946
    Ships in 1-2 days
    $ 18.99

    This product was last offered at the strikethrough price on
    12-11-2025

    $ 16.99 USD
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    $ 16.99 USD
    Free Shipping on orders $49 and up
    This belt drives the air conditioning compressor for the AC system. 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. This belt fits 2001-2006 M3.
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    Genuine BMW Belt tensioner pitman arm
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    Genuine BMW - Corporate Logo
    T#:33617
    Part#: 11281726773
    Ships in 3 Business Days
    3% off MSRP $ 60.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 58.99 USD
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    3% off MSRP
    $ 60.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 58.99 USD
    Free Shipping


    Genuine BMW Pitman Arm
    This item fits the following BMW Chassis:
    E36 M3,E46 M3,E85 Z4M,E34,E36,E39,E46,E53 X5 X5,E83 X3,E85 Z4,E86 Z4

    Fits BMW Engines including:
    M50,M52,M54,M56,S50,S52,S54

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    Genuine BMW Belt tensioner base plate
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    Genuine BMW - Corporate Logo
    T#:14460
    Part#: 11281726774
    Ships in 6 Business Days
    $ 67.99 USD
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    $ 67.99 USD
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    Genuine BMW Base Plate
    This item fits the following BMW Chassis:
    E36 M3,E46 M3,E85 Z4M,E34,E36,E39,E46,E53 X5 X5,E83 X3,E85 Z4,E86 Z4

    Fits BMW Engines including:
    M50,M52,M54,M56,S50,S52,S54

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    Idler Pulley
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    Bremmen Parts - Corporate Logo
    T#:30629656
    Part#: 11287841228
    In Stock
    Sale - Save 22% $ 19.99

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

    $ 15.50 USD
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    Sale - Save 22%
    $ 19.99

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

    $ 15.50 USD
    Free Shipping on orders $49 and up

    VAC Motorsports S54 Underdrive Power Pulley Set - 3 Pulley Race Set -...
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    VAC Motorsports - Corporate Logo
    T#:29533361
    Part#: VACUPPSS543ULG
    Ships on Jun 23, 2026
    $ 349.99 USD
    Free Shipping on orders $49 and up
    These pulleys are precision made from domestic USA 6061-T6 Billet Aluminum. They have undergone thousands of hours in testing, race use, and street miles accumulated to show these pulleys work great and give you the edge. Each is precision zero-balanced and inspected for zero-runout for the best performance and to have no adverse effects on reliability, noise, or vibration. This 3 Pulley Race Set is a very popular choice: just like the 2 pulley set, a precision power steering pulley and water pump pulley are included, but VAC includes an additional underdriven alternator pulley for maximum power output on the track. We have seen 11hp and 9 ftlbs to the wheels on otherwise stock racing cars with this kit.
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    Gates Mechanical A/C Belt Tensioner Assembly - E39, E46, E53, Z3, Z4 ...
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    Gates - Corporate Logo
    T#:591610
    Part#: 11281433571
    Ships on Jun 25, 2026
    $ 84.99 USD
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    $ 84.99 USD
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    Complete tensioner assembly with roller
    Meyle - Auxiliary Belt - E46, E90, E92, E93, Z3, Z4
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    Meyle - Corporate Logo
    T#:40546016
    Part#: 11287830945
    Special Order: No Guaranteed ETA
    $ 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.