BMW Drive Belts & V-Belts for BMW Z Series E85/6 (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 - 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
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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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Turner Motorsport - Corporate Logo
T#:3465
Part#: PPK-MZ4
In Stock
Sale - Save 25% $ 354.99

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

$ 266.24 USD
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Sale - Save 25%
$ 354.99

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

$ 266.24 USD
Free Shipping
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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    Genuine BMW - Corporate Logo
    T#:32404
    Part#: 11211439395
    In Stock
    4% off MSRP $ 26.99

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

    $ 25.99 USD
    Free Shipping on orders $49 and up
    4% off MSRP
    $ 26.99

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

    $ 25.99 USD
    Free Shipping on orders $49 and up


    Genuine BMW Hex Bolt
    This item fits the following BMW Chassis:
    E82 1M Coupe,E70 X5,E71 X6,E82,E83 X3,E85 Z4,E86 Z4,E89 Z4,E90,E92,E93,F01,F02,F10,F25 X3

    Fits BMW Engines including:
    N51,N52,N52N,N54,N54T

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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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    Genuine BMW - Corporate Logo
    T#:360628
    Part#: 11287837898
    In Stock
    13% 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.

    $ 52.99 USD
    Free Shipping on orders $49 and up
    13% 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.

    $ 52.99 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.
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    Genuine BMW - Corporate Logo
    T#:360630
    Part#: 11287838797
    Ships in 4 Business Days
    6% 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.

    $ 286.99 USD
    Free Shipping
    6% 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.

    $ 286.99 USD
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    Genuine BMW - Corporate Logo
    T#:360611
    Part#: 11281748131
    In Stock
    Sale - Save 5% $ 78.99

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

    $ 75.04 USD
    Free Shipping on orders $49 and up
    Sale - Save 5%
    $ 78.99

    This product was last offered at the strikethrough price on
    06-25-2026

    $ 75.04 USD
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    Genuine BMW - Corporate Logo
    T#:16560
    Part#: 11281437475
    In Stock
    $ 29.99

    This product was last offered at the strikethrough price on
    06-23-2026

    $ 22.99 USD
    Free Shipping on orders $49 and up
    $ 22.99 USD
    Free Shipping on orders $49 and up
    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 - Corporate Logo
    T#:177051
    Part#: 11287628651
    Ships in 4 Business Days
    14% off MSRP $ 63.99

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

    $ 54.99 USD
    Free Shipping on orders $49 and up
    14% off MSRP
    $ 63.99

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

    $ 54.99 USD
    Free Shipping on orders $49 and up
    This serpentine belt ( 6Pk 1827) drives the Air conditioning, Alternator, and power steering system for BMW's with the N52, N52N engine. We recommend replacing the AC / Alternator / Power Steering belt every 80,000 miles.
    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:
    2006-2008 E85 BMW Z4 3.0i Z4 3.0s2009+ E89 BMW Z4 sDrive30i
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    Genuine BMW - Corporate Logo
    T#:38827
    Part#: 12311713153
    Ships in 10 Business Days
    $ 24.99 USD
    Free Shipping on orders $49 and up


    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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    Genuine BMW - Corporate Logo
    T#:4472
    Part#: 11511436590
    In Stock
    Sale - Save 6% $ 73.99

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

    $ 69.65 USD
    Free Shipping
    Sale - Save 6%
    $ 73.99

    This product was last offered at the strikethrough price on
    06-25-2026

    $ 69.65 USD
    Free Shipping
    SEE T#337981
    Genuine BMW - Corporate Logo
    T#:360625
    Part#: 11287830946
    In Stock
    8% 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.

    $ 59.99 USD
    Free Shipping on orders $49 and up
    8% 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.

    $ 59.99 USD
    Free Shipping on orders $49 and up


    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

    Genuine BMW - Corporate Logo
    T#:360602
    Part#: 11281433571
    Ships in 3 Business Days
    3% 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.

    $ 221.99 USD
    Free Shipping
    3% 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.

    $ 221.99 USD
    Free Shipping
    Genuine BMW - Corporate Logo
    T#:19288
    Part#: 11517840403
    Ships in 4 Business Days
    $ 208.99 USD
    Free Shipping
    $ 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


    Genuine BMW - Corporate Logo
    T#:14462
    Part#: 11287509508
    Ships in 4 Business Days
    5% off MSRP $ 72.99

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

    $ 68.99 USD
    Free Shipping on orders $49 and up
    5% off MSRP
    $ 72.99

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

    $ 68.99 USD
    Free Shipping on orders $49 and up


    Genuine BMW Deflection Pulley -
    This item fits the following BMW Chassis:
    E85

    Fits BMW Engines including:
    M54


    Genuine BMW - Corporate Logo
    T#:38953
    Part#: 12317501754
    Ships in 4 Business Days
    3% off MSRP $ 122.99

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

    $ 118.99 USD
    Free Shipping
    3% off MSRP
    $ 122.99

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

    $ 118.99 USD
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    Genuine BMW Pulley Alternator - D=55Mm
    This item fits the following BMW Chassis:
    E39,E46,E53 X5,E83 X3,E85

    Fits BMW Engines including:
    M54

    Genuine BMW - Corporate Logo
    T#:360615
    Part#: 11287512762
    Ships in 3 Business Days
    8% off MSRP $ 35.99

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

    $ 32.99 USD
    Free Shipping on orders $49 and up
    8% off MSRP
    $ 35.99

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

    $ 32.99 USD
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    Genuine BMW - Corporate Logo
    T#:205330
    Part#: 11287636372
    Ships in 4 Business Days
    9% off MSRP $ 69.99

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

    $ 63.99 USD
    Free Shipping on orders $49 and up
    9% off MSRP
    $ 69.99

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

    $ 63.99 USD
    Free Shipping on orders $49 and up
    This serpentine belt (6Pk X 1453) drives the Air conditioning, Alternator, and power steering system for BMW's with the M54 engine. We recommend replacing the AC / Alternator / Power Steering belt every 80,000 miles.
    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:
    2003-2005 E85 BMW Z4 2.5i Z4 3.0i
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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
    Free Shipping on orders $49 and up
    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
    Free Shipping on orders $49 and up


    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


    Genuine BMW - Corporate Logo
    T#:6729
    Part#: 11281727159
    In Stock
    $ 14.10 USD
    Free Shipping on orders $49 and up
    This is the Genuine BMW protection cap for the tensioner pulley # 11281748131

    Genuine BMW - Corporate Logo
    T#:360614
    Part#: 11287512758
    Ships in 4 Business Days
    3% 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.

    $ 221.99 USD
    Free Shipping
    3% 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.

    $ 221.99 USD
    Free Shipping
    Genuine BMW - Corporate Logo
    T#:33617
    Part#: 11281726773
    Ships in 4 Business Days
    2% 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.

    $ 59.99 USD
    Free Shipping
    2% 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.

    $ 59.99 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 - Corporate Logo
    T#:32895
    Part#: 11237564969
    Ships in 4 Business Days
    8% off MSRP $ 789.99

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

    $ 723.99 USD
    Free Shipping
    8% off MSRP
    $ 789.99

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

    $ 723.99 USD
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    Genuine BMW Vibration Damper -
    This item fits the following BMW Chassis:
    E70 X5,E82,E83 X3,E85,E86,E89 Z4,E90,E92,E93

    Fits BMW Engines including:
    N51,N52,N52N

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    Genuine BMW - Corporate Logo
    T#:360606
    Part#: 11281717188
    Ships in 4 Business Days
    6% 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.

    $ 155.99 USD
    Free Shipping
    6% 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.

    $ 155.99 USD
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    Genuine BMW - Corporate Logo
    T#:14460
    Part#: 11281726774
    Ships in 6 Business Days
    $ 67.99 USD
    Free Shipping
    $ 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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    Genuine BMW - Corporate Logo
    T#:19175
    Part#: 11237513862
    Ships in 10 Business Days
    2% off MSRP $ 719.99

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

    $ 705.99 USD
    Free Shipping on orders $49 and up
    2% off MSRP
    $ 719.99

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

    $ 705.99 USD
    Free Shipping on orders $49 and up


    Genuine BMW Vibration Damper -
    This item fits the following BMW Chassis:
    E39,E46,E53 X5,E83 X3,E85

    Fits BMW Engines including:
    M54,M56