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Crankshaft Pulleys & Harmonic Balancers

Keep your drive belt system in check by replacing your BMW's crankshaft pulleys and harmonic balancers.
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URO Crankshaft Vibration Damper - 11237573655
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URO - Corporate Logo
T#:28171559
Part#: 11237573655
In Stock
$ 341.99 USD
Free Shipping on orders $49 and up
A vibration damper is crucial for preventing shock load factors that could damage the crankshaft. If your damper is faulty, opt for this quality replacement from URO Parts for a lasting and comprehensive fix.
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VAC Motorsports - Corporate Logo
T#:27905092
Part#: VAC-HPCD-M50
Ships in 8 Business Days
$ 799.99 USD
Free Shipping on orders $49 and up

If you're grappling with issues like crankshaft failures and oil pump breakdowns in your BMW 6-cylinder engines, you're not alone. Even seasoned mechanics can overlook the critical aspect of harmonic resonance control in these inline-6 motors, despite their optimal configuration.

Enter ATI Performance Products in collaboration with VAC Motorsports, presenting a solution in the form of new dampers tailored for BMW 2.5L, 2.8L, 3.0L, and 3.2L straight-6 engines found in various models like the E36 and E46 M3, E9X, and E6X, as well as newer Z3s and Z4s. These dampers effectively nullify crankshaft harmonic vibrations, paving the way for enhanced horsepower and torque output, alongside a reduction in internal engine wear. Say goodbye to issues like fractured oil pumps and timing chain mishaps! By pairing these dampers with a VAC accessory pulley, you seamlessly replace the OEM balancer. Featuring a 7” outer diameter and OEM-style timing alignment tabs, these ATI Super Dampers boast SFI 18.1 Safety Certification, ensuring they're competition-ready.

What sets the ATI SuperDamper apart? It's the remedy for vibration woes in inline 6 engines, especially those equipped with lightweight clutch and flywheel setups. Expect diminished wear on bearings, engine accessories, and oil pumps, all while being compatible with underdrive pulleys.

Included in the kit are the damper itself, a lightweight VAC Billet Crankshaft Pulley, along with all necessary mounting and installation hardware. Note that it's not compatible with S50B30 & S50B32 Euro Engines. For street/track vehicles with air conditioning, opting for the Additional A/C Pulley Option is imperative, given that the OE A/C pulley isn't compatible. Rest assured, all required mounting and installation hardware is included, and the entire package is proudly Made in the USA.

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VAC Motorsports - Corporate Logo
T#:12610319
Part#: VAC-HPCD-S14
Ships in 7 Business Days
$ 699.99 USD
Free Shipping on orders $49 and up
NOTE: Due to space limitations, the design of this damper will overdrive your components (water pump, power steering, and alternator) by approximately 10-13%; we highly recommend using underdrive pulleys in your setup Controlling the harmonic resonance of the BMW S14 engine is highly important as RPMs rise, but the ideal configuration of the 4-cylinder motor makes even the most experienced engine builders overlook some fundamental principles of engine harmonics that can be destructive. Harmonics destroy these motors by causing extensive oil pump and crankshaft damage, but the addition of VAC’s Harmonic Damper eliminates the unstable crankshaft harmonic vibrations that cause internal engine wear. By eliminating harmonic vibrations, your S14 engine will be able to produce more horsepower and torque with increased reliability. The VAC/ATI Harmonic Damper is made with an integral pulley, eliminating the need for the additional pulley other models require. Exceeds SFI 18.1 Safety Certification Eliminates problems with lightweight clutch and flywheel assemblies Controls destructive harmonic forces Reduces instances of bearing wear, accessory failure and oil pump failure Includes lightweight VAC Billet Crankshaft Pulley Made in USA ATI Performance Products, Inc. is located in Baltimore, MD, and specializes in producing and maintaining high performance products for street and track applications. Over the years ATI has earned a reputation for its cutting edge technology, attention to detail and rigorous testing under race conditions.
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Crank Pulley With Dampener for MINI R5X R6X
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:591628
Part#: 11237562801
In Stock
$ 72.00

This product was last offered at the strikethrough price on
07-28-2026

$ 49.78 USD
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$ 49.78 USD
Free Shipping on orders $49 and up

Enhance your Mini's engine performance with this essential Engine Harmonic Balancer/Vibration Dampener. Designed to smooth out rotational vibrations from the crankshaft, this pulley-driven unit ensures optimal engine operation. When worn, it may produce unusual noises near the passenger's side oil pan, signaling the need for replacement. For comprehensive maintenance, it's advisable to change the hex bolts along with the unit. Benefit from:

  • Improved engine performance.
  • Reduction of rotational vibrations.
  • Prevention of unusual noises.
  • Compatibility with Mini vehicles.
  • Easy replacement process.
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ATI Performance Products - Corporate Logo
T#:22756711
Part#: 917992
In Stock
$ 370.99 USD
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The ATI Super Damper, meticulously designed for late-model 1.6L Mini Cooper engines, stands as the top choice and a rarity with its SFI 18.1 Certification, ensuring optimum performance for your MINI Cooper.

Key Features:

  • Compatible with 2001-2006 Mini Cooper and Mini Cooper S models.
  • Effectively dampens torsional crankshaft vibrations across all RPM levels.
  • Provides protection against engine harmonics.
  • A direct replacement for the OEM unit, ensuring ease of installation.
  • Equipped with a 6-rib serpentine belt drive for reliable performance.
  • Laser-etched timing marks for precision.
  • SFI 18.1 Certified for competition use, meeting rigorous standards.
  • Note: A belt tensioner tool is required to remove or replace the factory belt, and the ATI puller is not compatible with this damper.

Specifications:

  • Shell Material: Aluminum, 6-rib
  • Hub Material: Steel 916102
  • Inertia Weight: 2.20 lbs, 3 ring
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Alta Performance - Corporate Logo
T#:26238480
Part#: AMPENG520
In Stock at Vendor
$ 129.99 USD
Free Shipping on orders $49 and up

Enhance the performance of your Mini with the ALTA Lightened Crank Pulley (LCP), engineered to increase horsepower and torque. Available in 0% Stock Sized and +2% Oversized options, this pulley is crafted from 6061T6 aluminum, weighing only 0.65 lbs. Significantly lighter than the stock crank pulley, the ALTA LCP ensures improved engine efficiency without adding vibration or noise. The +2% Oversized pulley provides additional boost for Supercharged Cooper S models, delivering safe and reliable performance. With increased belt contact, this pulley reduces wear and enhances durability, making it a must-have upgrade for Mini enthusiasts.

  • Increases horsepower and torque
  • Lightweight 6061T6 aluminum construction
  • Available in 0% Stock Sized and +2% Oversized options
  • Does not affect charging system
  • Improves engine efficiency and performance
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ATI Performance Products - Corporate Logo
T#:22756691
Part#: 917993
In Stock
$ 370.99 USD
Free Shipping on orders $49 and up

ATI Super Damper for Enhanced MINI Cooper Performance

Upgrade your MINI Cooper with the ATI Super Damper, a top-rated and SFI 18.1 Certified replacement. Designed to fit 2001-2006 Mini Cooper and Mini Cooper S models, this damper is engineered to dampen torsional crankshaft vibrations across all RPM levels, ensuring smooth and reliable performance. It serves as a vital shield against engine harmonics and is a direct replacement for the OEM unit. The 6-rib serpentine belt drive and laser-etched timing marks offer precision and accuracy. Please note that a belt tensioner tool is necessary for removing or replacing the factory belt, and the ATI puller is not compatible with this damper.

Key Features:

  • SFI 18.1 Certified for competition use
  • Provides effective torsional crankshaft vibration damping
  • Direct replacement for the OEM unit
  • 6-rib serpentine belt drive
  • Laser-etched timing marks for precision

Specifications:

  • Shell Material: Aluminum, 6-rib
  • Hub Material: Steel 916102
  • Inertia Weight: 2.20 lbs, 3 ring
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Dinan - Corporate Logo
T#:21078436
Part#: D560-0001
Ships in 6 Business Days
Sale - Save 10% $ 449.99

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

$ 404.96 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 449.99

This product was last offered at the strikethrough price on
07-31-2026

$ 404.96 USD
Free Shipping on orders $49 and up
Dinan's lightweight billet aluminum crankshaft pulley underdrives each of the accessories by 13 percent, reducing parasitic drag on the engine for a 6 HP @ 8000 RPM and 4 lb-ft torque @ 8000 RPM gain on a stock vehicle. The Dinan underdrive pulley retains the factory harmonic crankshaft damper, eliminating vibration that might otherwise damage the crankshaft. The kit includes all of the necessary mounting hardware, a lightweight pulley, and shorter belts. This product is backed by our industry-leading 4 year/50,000 mile warranty so you can rest assured that you are purchasing the best quality product for your BMW. Features: All accessories are underdriven by 13% to decrease drag on the engine. Lightweight billet aluminum crankshaft pulley, black anodized and engraved. Includes mounting hardware and shorter belts.
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ATI Performance Products - Corporate Logo
T#:27605443
Part#: ATI-HPCD-B58
Ships on Aug 31, 2026
$ 389.99 USD
Free Shipping on orders $49 and up

Understanding the criticality of harmonic resonance in BMW inline-6 engines, ATI Performance Products has collaborated with VAC Motorsports to craft revolutionary dampers. Designed for BMW 2.5L, 2.8L, 3.0L, and 3.2L straight-6 engines in E36 and E46 M3, E9X, E6X, Z3s, and Z4s, these dampers tackle harmonic vibrations, unlocking heightened horsepower, torque, and longevity. Forget about broken oil pumps and timing chains!

Pairing seamlessly with VAC accessory pulleys, these 7" diameter dampers boast OEM-style timing alignment tabs, ensuring a direct fit over OEM balancers. Notably, all ATI Super Dampers exceed SFI 18.1 Safety Certification for competitive use, making them a must-have for BMW enthusiasts. Benefits extend to eliminating vibration issues with lightweight clutch and flywheel assemblies, reducing wear on bearings, engine accessories, and oil pumps, and harmonizing with underdrive pulleys.

Plus, each package includes the lightweight VAC Billet Crankshaft Pulley, proudly made in the USA for uncompromised quality assurance.

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Packaged by Turner - Corporate Logo
T#:27672133
Part#: 11238511371TKT5
Ships in 2 Business Days
Sale - Save 2% $ 710.99

This product was last offered at the strikethrough price on
06-22-2026

$ 696.95 USD
Free Shipping on orders $49 and up
Sale - Save 2%
$ 710.99

This product was last offered at the strikethrough price on
06-22-2026

$ 696.95 USD
Free Shipping on orders $49 and up
The vibration damper in the E70 X5 35d is a common failure item and can fail at as low as 60 thousand miles leaving you stranded. This kit includes everything needed to replace your vibration damper and service your drive belt system! Vibration Dampers (also called Harmonic Dampers or Harmonic Balancers) absorb and remove unwanted vibrations due to torsional twisting of the crankshaft. During cylinder combustions, the crank quickly flexes ever so slightly, resulting in resonance vibrations. These vibrations could lead to damage of the crankshaft or crank bearings over time if not accounted for. The vibration damper helps to eliminate these vibrations, thereby extending the life of your engine's mechanical components and preventing damage. If your vibration damper has failed, you will likely notice excess engine vibrations or shaking that will gradually get worse, especially around certain RPMs where the vibration resonance is most pronounced. This kit includes all of the components necessary to replace your damper with an OEM damper from Corteco, including belts, pulleys, hardware, and more. Also included in this kit is a brand-new line of specialty tools from Schwaben designed specifically for this replacement! You will get a Crankshaft Pulley Turner Tool, Stretch Belt Remover/Installer, T50 Alternator Wrench, and a 15/16" Pass-Through Socket, all included to make swapping out your old damper a quick and easy process! Standard tools you might need but are not included: 8mm Drill Bit (to use as flywheel locking pin) 32mm Fan Clutch Wrench - You may want a second 32mm to hold the coupler in place 24mm Box Wrench - For releasing tensioner Torque Wrench - To torque new crankshaft bolts Breaker Bar - to drive the crankshaft bolts further
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Packaged by Turner - Corporate Logo
T#:27672134
Part#: 11238511371TKT6
Ships in 2 Business Days
Sale - Save 1% $ 577.99

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

$ 573.46 USD
Free Shipping on orders $49 and up
Sale - Save 1%
$ 577.99

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

$ 573.46 USD
Free Shipping on orders $49 and up
The vibration damper in the E70 X5 35d is a common failure item and can fail at as low as 60 thousand miles leaving you stranded. This kit includes everything needed to replace your vibration damper and service your drive belt system! Vibration Dampers (also called Harmonic Dampers or Harmonic Balancers) absorb and remove unwanted vibrations due to torsional twisting of the crankshaft. During cylinder combustions, the crank quickly flexes ever so slightly, resulting in resonance vibrations. These vibrations could lead to damage of the crankshaft or crank bearings over time if not accounted for. The vibration damper helps to eliminate these vibrations, thereby extending the life of your engine's mechanical components and preventing damage. If your vibration damper has failed, you will likely notice excess engine vibrations or shaking that will gradually get worse, especially around certain RPMs where the vibration resonance is most pronounced. This basic kit includes the components necessary to replace your damper with an OEM damper from Corteco, including two belts and the Corteco Vibration Damper pulley. Also included in this kit is a brand-new line of specialty tools from Schwaben designed specifically for this replacement! You will get a Crankshaft Pulley Turner Tool, Stretch Belt Remover/Installer, T50 Alternator Wrench, and a 15/16" Pass-Through Socket, all included to make swapping out your old damper a quick and easy process! Standard tools you might need but are not included: 8mm Drill Bit (to use as flywheel locking pin) 32mm Fan Clutch Wrench - You may want a second 32mm to hold the coupler in place 24mm Box Wrench - For releasing tensioner Torque Wrench - To torque new crankshaft bolts Breaker Bar - to drive the crankshaft bolts further
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Packaged by Turner - Corporate Logo
T#:27672135
Part#: 11238511371TKT7
Ships in 2 Business Days
$ 751.37 USD
Free Shipping on orders $49 and up
The vibration damper in the 335d is a common failure item and can fail at as low as 60 thousand miles leaving you stranded. This kit includes everything needed to replace your vibration damper and service your drive belt system! Vibration Dampers (also called Harmonic Dampers or Harmonic Balancers) absorb and remove unwanted vibrations due to torsional twisting of the crankshaft. During cylinder combustions, the crank quickly flexes ever so slightly, resulting in resonance vibrations. These vibrations could lead to damage of the crankshaft or crank bearings over time if not accounted for. The vibration damper helps to eliminate these vibrations, thereby extending the life of your engine's mechanical components and preventing damage. If your vibration damper has failed, you will likely notice excess engine vibrations or shaking that will gradually get worse, especially around certain RPMs where the vibration resonance is most pronounced. This kit includes all of the components necessary to replace your damper with an OEM damper from Corteco, including belts, pulleys, hardware, and more. Also included in this kit is a brand-new line of specialty tools from Schwaben designed specifically for this replacement! You will get a Crankshaft Pulley Turner Tool, Stretch Belt Remover/Installer, T50 Alternator Wrench, and a 15/16" Pass-Through Socket, all included to make swapping out your old damper a quick and easy process! Standard tools you might need but are not included: 8mm Drill Bit (to use as flywheel locking pin) 32mm Fan Clutch Wrench - You may want a second 32mm to hold the coupler in place 24mm Box Wrench - For releasing tensioner Torque Wrench - To torque new crankshaft bolts Breaker Bar - to drive the crankshaft bolts further
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Packaged by Turner - Corporate Logo
T#:27672136
Part#: 11238511371TKT8
Ships in 2 Business Days
$ 561.99

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

$ 559.34 USD
Free Shipping on orders $49 and up
$ 559.34 USD
Free Shipping on orders $49 and up
The vibration damper in the 335d is a common failure item and can fail at as low as 60 thousand miles leaving you stranded. This kit includes everything needed to replace your vibration damper and service your drive belt system! Vibration Dampers (also called Harmonic Dampers or Harmonic Balancers) absorb and remove unwanted vibrations due to torsional twisting of the crankshaft. During cylinder combustions, the crank quickly flexes ever so slightly, resulting in resonance vibrations. These vibrations could lead to damage of the crankshaft or crank bearings over time if not accounted for. The vibration damper helps to eliminate these vibrations, thereby extending the life of your engine's mechanical components and preventing damage. If your vibration damper has failed, you will likely notice excess engine vibrations or shaking that will gradually get worse, especially around certain RPMs where the vibration resonance is most pronounced. This basic kit includes the components necessary to replace your damper with an OEM damper from Corteco, including two belts and the Corteco Vibration Damper pulley. Also included in this kit is a brand-new line of specialty tools from Schwaben designed specifically for this replacement! You will get a Crankshaft Pulley Turner Tool, Stretch Belt Remover/Installer, T50 Alternator Wrench, and a 15/16" Pass-Through Socket, all included to make swapping out your old damper a quick and easy process! Standard tools you might need but are not included: 8mm Drill Bit (to use as flywheel locking pin) 32mm Fan Clutch Wrench - You may want a second 32mm to hold the coupler in place 24mm Box Wrench - For releasing tensioner Torque Wrench - To torque new crankshaft bolts Breaker Bar - to drive the crankshaft bolts further
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