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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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Genuine BMW Hex Bolt - 11211439395
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Genuine BMW - Corporate Logo
T#:32404
Part#: 11211439395
In Stock
4% off MSRP $ 26.99

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$ 25.99 USD
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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
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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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Vargas N54/55 Billet Crank Seal Guard - BMW N54 N55 3.0L
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Vargas Turbo Technologies - Corporate Logo
T#:638889
Part#: VTT-CRANKGUARD
Ships in 4 Business Days
Sale - Save 15% $ 89.99

This product was last offered at the strikethrough price on
07-02-2026

Starting at $ 76.49 USD
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Sale - Save 15%
$ 89.99

This product was last offered at the strikethrough price on
07-02-2026

Starting at $ 76.49 USD
Free Shipping
It is a well-known issue on the BMW N54/55 platforms that your serpentine belt can fail for various reasons. When this happens, there is a high chance of the belt getting sucked behind the front damper pulley and then being pushed past the crank seal into your oil pan. From there it can get sucked into the oil pick up causing total engine failure. Even if you do not lose the engine, it is a COSTLY repair to remove the sub-frame and drop the oil pan to remove the belt. The best way to combat this is to watch for oil leaks and keep up on your maintenance. BUT, even with those preventative measures, pre-mature belt failure can occur. This crank seal guard installs over your front crank seal and will keep the belt from being sucked in if a belt failure does occur. This is a cheap way to ensure you do not end up having to replace your motor from oil starvation due to an ingested belt. Vargas' seal is different from those already on market in two major ways. Firstly, it is not offensively priced. Secondly, it is 100% billet with no welds on the tabs to break, no cheap bent thin steel pieces. 100% Billet 6061-T6 aluminum, anodized black for long-term corrosion resistance. Crank Seal Guard includes: One VTT Billet N54/55 Crank Seal Guard Two extended 12.9 Grade bolts, and two stainless washers We highly recommend you install WITH a crank bolt capture at the same time, as you have to remove the damper anyway. Then you will get the benefit of helping eliminate the dreaded spun crank hub and the crank seal issue
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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
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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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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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Crankshaft Pulley
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URO - Corporate Logo
T#:591616
Part#: 11281735358
Ships in 1 Business Day
$ 98.99 USD
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$ 98.99 USD
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Reduces vibrations and connects accessories
VAC Harmonic SuperDamper By ATI - M52/S52/M52TU/M54
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VAC Motorsports - Corporate Logo
T#:27905092
Part#: VAC-HPCD-M50
Ships in 7 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 Harmonic S55 SuperDamper By ATI
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ATI Performance Products - Corporate Logo
T#:639880
Part#: VAC-HPCD-S55
In Stock
$ 989.99 USD
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$ 989.99 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. Includes lightweight VAC Billet Crankshaft Pulley. Made in the USA.
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S14 VAC/ATI Crank Damper - BMW S14B23/B25/B27
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VAC Motorsports - Corporate Logo
T#:12610319
Part#: VAC-HPCD-S14
Ships in 6 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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N54 "Bulletproof" Crank Hub & Serpentine Kit - BMW E82/88 E9X N54 3.0...
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Packaged by Turner - Corporate Logo
T#:1241396
Part#: TMSN54BPKT
Back Ordered
Sale - Save 6% $ 541.99

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

$ 509.11 USD
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Sale - Save 6%
$ 541.99

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

$ 509.11 USD
Free Shipping
BMW has a seemingly endless number of fans of the N54/N55/S55 engines, three straight-six turbo engines that are each capable of 750+ horsepower, but that doesn't mean they were without their faults! BMW's N54 had a notoriously rocky start with reliability due to multiple issues such as fuel injectors failing, turbos failing, serpentine belt failure, crank hubs coming loose, and more... BMW made multiple attempts to fix the issues plaguing the N54, but they could only do so much and the fixes rolled out seemed temporary at best. Following the N54, BMW released their updated N55 and S55 engines, giving many people hope that these engines would address the previous issues. Unfortunately, this was only some-what the case. Crank hubs and crank bolts continued to loosen over time and serpentine belts continued to shred themselves and get pulled into the oil pan through the front main seal. For all three engines, this meant a single failure could effectively turn your engine into an oversized paperweight. Luckily for us, the BMW community is full of skilled enthusiasts who have gladly taken up the task to offer solutions! The first headache to be addressed was the Crank Hub and Bolt. Using a simple plate that fits perfectly over your crank hub's hex-head bolt and mounts up against the damper, the crank bolt is effectively locked in place, preventing it from being able to back out until the plate is fully removed. Next up was the serpentine belt failures. It's not known what exactly causes the serpentine belt to split, but once it does, the pieces hanging off of the belt wrap around and behind the damper. This leads to the belt breaking up into smaller pieces and eventually getting pushed between the crank hub and rear main seal into the oil pan. These small pieces of debris get caught in and block the oil pickup, preventing oil flow and leading to engine failure. To prevent this, multiple aftermarket companies came up with their own versions of Crank Seal Plates. This plate is installed behind the front damper, blocking the opening that allows the serpentine belt to pass between the crank hub and seal, keeping debris out of your oil pan! Also included in this kit are the components to service your front Oil Cooler/Filter Housing gaskets, refresh your drive belt system, and install the aftermarket upgrades. Kit Features and Contents: Vargas Turbo Crank Bolt Capture Vargas Turbo Crank Seal Plate OEM Accessory Belt OEM Belt Tensioner & Idler Pullies Liqui-Moly Longtime High Tech Engine Oil (5w-30) - 7 Liters OEM Hengst Oil Filter OEM Oil Filter/Cooler Housing Gaskets TMS Oil Change Sticker Genuine BMW Full-Strength Coolant - 1 Liter Looking to go even further and upgrade your Crank Hub as well? Check out T#558924
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Genuine BMW Crankshaft Pulley (Vibration Damper) - F48 F39
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Genuine BMW - Corporate Logo
T#:522791
Part#: 11238602800
In Stock
6% off MSRP $ 579.98

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

$ 546.99 USD
Limited Qty Sale
Free Shipping
6% off MSRP
$ 579.98

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

$ 546.99 USD
Limited Qty Sale
Free Shipping

Upgrade your BMW engine with the Genuine BMW Crankshaft Pulley (Part Number: 11238602800). This OEM crankshaft pulley, designed specifically for BMW models, ensures optimal engine performance and reliability.

Key Features:

  • Genuine BMW part for perfect compatibility and functionality
  • Precision engineering for a perfect fit and long-lasting performance
  • Designed to meet BMW's high standards for quality and durability
  • Ensures proper belt tension and smooth operation of engine accessories
  • Compatible with specific BMW models (verify compatibility before purchase)

Replace your worn or faulty crankshaft pulley with this Genuine BMW part to maintain your vehicle's performance and drive with confidence.

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Crankshaft Pulley With Vibration Damper
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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:593668
Part#: 11237564969
Ships in 1 Business Day
$ 234.99 USD
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$ 234.99 USD
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Every time the cylinders fire, torque is transferred into the crankshaft. The crankshaft deflects under this torque, which sets up vibrations when the torque is released. At certain engine speeds the torque imparted by the cylinders are in synch with the vibrations in the crankshaft, which results in a phenomenon called resonance This resonance causes stress beyond what the crankshaft can withstand, resulting in crankshaft failure. The accessory pulley acts as a balancer and prevents these vibrations from destroying your crankshaft.
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BMW F30 N47 2.0L Crankshaft Pulley (Vibration Damper)
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Corteco - Corporate Logo
T#:594954
Part#: 11238512072
In Stock at Vendor
$ 308.90 USD
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BMW F30 N47 2.0L Crankshaft Pulley (Vibration Damper) is a high-quality replacement component from Corteco, designed to ensure smooth engine operation and minimize vibration. Turner Motorsport offers this vibration damper as a perfect fit for various BMW chassis, including the F25 X3, F30, and F31 models. This crankshaft pulley helps maintain engine balance and reduces wear on other engine components by absorbing vibrations. Ideal for maintaining performance and reliability, this part is a crucial upgrade or replacement for your BMW.
  • Reduces engine vibration: Effectively dampens vibrations to protect engine components.
  • High-quality construction: Manufactured by Corteco for reliability and durability.
  • Improves engine performance: Ensures smooth operation and reduced wear.
  • Exact fit: Compatible with BMW F25 X3, F30, and F31 chassis.
  • Easy installation: Designed for straightforward replacement with no modifications required.
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ARP Harmonic Damper Bolt Set - BMW S58
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ARP - Corporate Logo
T#:49092362
Part#: ARP-CBS-S58
Ships on Aug 4, 2026
New Item
$ 134.99 USD
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The OE crank bolts are grade 10 torque-to-yield bolts, designed for only a single use. For vehicles making stock power, the stock bolts are more than enough. Unfortunately, vehicles making more power than stock have experienced issues with the stock damper bolts coming loose and breaking, leading to engine and crank damage. 5150 AutoSport worked with ARP to create this ARP Harmonic Damper Bolt Set to address this issue. These upgraded bolts are stronger than the factory bolts and are designed to provide even repeatable torque load, preventing them from breaking and allowing them to be re-torqued as needed.
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Genuine BMW Crank hub
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Genuine BMW - Corporate Logo
T#:32901
Part#: 11237570107
Ships in 2 Business Days
6% off MSRP $ 167.00

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

$ 156.99 USD
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6% off MSRP
$ 167.00

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

$ 156.99 USD
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Genuine BMW Hub -
This item fits the following BMW Chassis:
E71,E82,E89 Z4,E90,E92,E93,F01,F02

Fits BMW Engines including:
N54,N54T

VAC V2 Harmonic SuperDamper By ATI - BMW N54 3.0L
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ATI Performance Products - Corporate Logo
T#:639879
Part#: VAC-HPCD-N54
Ships in 8 Business Days
$ 1,059.99 USD
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$ 1,059.99 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. Includes lightweight VAC Billet Crankshaft Pulley.
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Genuine BMW Vibration Damper
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Genuine BMW - Corporate Logo
T#:32905
Part#: 11237573655
In Stock
10% off MSRP $ 713.99

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

$ 641.99 USD
Limited Qty Sale
Free Shipping
10% off MSRP
$ 713.99

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

$ 641.99 USD
Limited Qty Sale
Free Shipping


Genuine BMW Vibration Damper -
This item fits the following BMW Chassis:
E71,F06,F10,F12,F13,F15,F16,F22,F25 X3,F26 X4,F30,F32,F33,F34,F36

Fits BMW Engines including:
N55

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Crank Pulley With Dampener for MINI R5X R6X
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URO - Corporate Logo
T#:591628
Part#: 11237562801
In Stock
$ 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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ALTA Crank Pulley - 2% - R52 R53
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Alta Performance - Corporate Logo
T#:26238480
Part#: AMPENG520
In Stock
$ 129.99 USD
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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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ALTA Crank Pulley - 0% (Stock Size) MINI W11 1.6L Engine
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Alta Performance - Corporate Logo
T#:394899
Part#: AMPENG500
In Stock at Vendor
$ 129.99 USD
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$ 129.99 USD
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ALTA Lightweight Crank Pulley (LCP) for Mini

Upgrade your Mini's performance with the ALTA Lightweight Crank Pulley (LCP), designed to increase horsepower and torque. Available in two sizes - 0% Stock Sized and +2% Oversized - this pulley is engineered for Supercharged Cooper S models. Crafted from 6061T6 aluminum, the ALTA pulley is lightweight, weighing just 0.65 lbs, providing a weight reduction of over 2.3 lbs compared to the stock crank pulley.

  • Increases horsepower and torque
  • Lightweight design reduces rotational mass
  • Does not wear out engine bearings or oil pump
  • Adds boost safely and reliably
  • Improves belt contact with pulleys, reducing wear
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N55 "Bulletproof" Crank Hub & Serpentine Kit - BMW E82/88 E9X N55 3.0...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:1241397
Part#: TMSE90N55BPKT
In Stock
$ 575.69 USD
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$ 575.69 USD
Free Shipping
BMW has a seemingly endless number of fans of the N54/N55/S55 engines, three straight-six turbo engines that are each capable of 750+ horsepower, but that doesn't mean they were without their faults! BMW's N54 had a notoriously rocky start with reliability due to multiple issues such as fuel injectors failing, turbos failing, serpentine belt failure, crank hubs coming loose, and more... BMW made multiple attempts to fix the issues plaguing the N54, but they could only do so much and the fixes rolled out seemed temporary at best. Following the N54, BMW released their updated N55 and S55 engines, giving many people hope that these engines would address the previous issues. Unfortunately, this was only some-what the case. Crank hubs and crank bolts continued to loosen over time and serpentine belts continued to shred themselves and get pulled into the oil pan through the front main seal. For all three engines, this meant a single failure could effectively turn your engine into an oversized paperweight. Luckily for us, the BMW community is full of skilled enthusiasts who have gladly taken up the task to offer solutions! The first headache to be addressed was the Crank Hub and Bolt. Using a simple plate that fits perfectly over your crank hub's hex-head bolt and mounts up against the damper, the crank bolt is effectively locked in place, preventing it from being able to back out until the plate is fully removed. Next up was the serpentine belt failures. It's not known what exactly causes the serpentine belt to split, but once it does, the pieces hanging off of the belt wrap around and behind the damper. This leads to the belt breaking up into smaller pieces and eventually getting pushed between the crank hub and rear main seal into the oil pan. These small pieces of debris get caught in and block the oil pickup, preventing oil flow and leading to engine failure. To prevent this, multiple aftermarket companies came up with their own versions of Crank Seal Plates. This plate is installed behind the front damper, blocking the opening that allows the serpentine belt to pass between the crank hub and seal, keeping debris out of your oil pan! Also included in this kit are the components to service your front Oil Cooler/Filter Housing gaskets, refresh your drive belt system, and install the aftermarket upgrades. Kit Features and Contents: Vargas Turbo Crank Bolt Capture Vargas Turbo Crank Seal Plate OEM Accessory Belt OEM Belt Tensioner & Idler Pullies Liqui-Moly Longtime High Tech Engine Oil (5w-30) - 7 Liters OEM Hengst Oil Filter OEM Oil Filter/Cooler Housing Gaskets TMS Oil Change Sticker Genuine BMW Full-Strength Coolant - 1 Liter
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ATI Super Damper Harmonic Damper - 5.67" Stock Size
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ATI Performance Products - Corporate Logo
T#:22756711
Part#: 917992
In Stock
$ 370.99 USD
Free Shipping on orders $49 and up

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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Genuine BMW Crankshaft Pulley - E90 E92 E93 M3
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Genuine BMW - Corporate Logo
T#:32918
Part#: 11237838230
In Stock
12% off MSRP $ 107.99

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

$ 97.99 USD
Limited Qty Sale
Free Shipping
12% off MSRP
$ 107.99

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

$ 97.99 USD
Limited Qty Sale
Free Shipping


Genuine BMW Pulley
This item fits the following BMW Chassis:
E60 M5,E63 M6,E63,E90,E92,E93

Fits BMW Engines including:
S65,S85

ATI Super Damper Harmonic Damper - 5.75" 2% OD - W11 1.6L
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ATI Performance Products - Corporate Logo
T#:22756691
Part#: 917993
In Stock
$ 370.99 USD
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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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Crank Pulley With Dampener
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T#:38587673
Part#: 11237829906
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Crank Pulley With Dampener
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T#:591627
Part#: 11237562801
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$ 97.71

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Smooth out rotational vibrations and maintain optimal engine performance with this pulley-driven unit for your Mini. Over time, wear and drying out can lead to unusual noises near the passenger's side oil pan, indicating the need for replacement. Ensure seamless operation by replacing this unit when necessary, and don't forget to change the hex bolts for comprehensive maintenance.

  • Reduces rotational vibrations for smoother engine operation
  • Prevents unusual noises near the passenger's side oil pan
  • Ensures optimal engine performance and longevity
  • Replacement recommended to maintain engine health
  • Hex bolts replacement advised for thorough maintenance
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S55 "Bulletproof" Crank Hub & Serpentine Kit - BMW F8X S55 3.0L ...
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T#:1241399
Part#: TMSS55BPKT
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This product was last offered at the strikethrough price on
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$ 767.75 USD
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BMW has a seemingly endless number of fans of the N54/N55/S55 engines, three straight-six turbo engines that are each capable of 750+ horsepower, but that doesn't mean they were without their faults! BMW's N54 had a notoriously rocky start with reliability due to multiple issues such as fuel injectors failing, turbos failing, serpentine belt failure, crank hubs coming loose, and more... BMW made multiple attempts to fix the issues plaguing the N54, but they could only do so much and the fixes rolled out seemed temporary at best. Following the N54, BMW released their updated N55 and S55 engines, giving many people hope that these engines would address the previous issues. Unfortunately, this was only some-what the case. Crank hubs and crank bolts continued to loosen over time and serpentine belts continued to shred themselves and get pulled into the oil pan through the front main seal. For all three engines, this meant a single failure could effectively turn your engine into an oversized paperweight. Luckily for us, the BMW community is full of skilled enthusiasts who have gladly taken up the task to offer solutions! The first headache to be addressed was the Crank Hub and Bolt. Using a simple plate that fits perfectly over your crank hub's hex-head bolt and mounts up against the damper, the crank bolt is effectively locked in place, preventing it from being able to back out until the plate is fully removed. Next up was the serpentine belt failures. It's not known what exactly causes the serpentine belt to split, but once it does, the pieces hanging off of the belt wrap around and behind the damper. This leads to the belt breaking up into smaller pieces and eventually getting pushed between the crank hub and rear main seal into the oil pan. These small pieces of debris get caught in and block the oil pickup, preventing oil flow and leading to engine failure. To prevent this, multiple aftermarket companies came up with their own versions of Crank Seal Plates. This plate is installed behind the front damper, blocking the opening that allows the serpentine belt to pass between the crank hub and seal, keeping debris out of your oil pan! Also included in this kit are the components to service your front Oil Cooler/Filter Housing gaskets, refresh your drive belt system, and install the aftermarket upgrades. Kit Features and Contents: Vargas Turbo Crank Bolt Capture Vargas Turbo Crank Seal Plate OEM Accessory Belt OEM Belt Tensioner & Idler Pullies Liqui-Moly Longtime High Tech Engine Oil (5w-30) - 7 Liters OEM Hengst Oil Filter OEM Oil Filter/Cooler Housing Gaskets TMS Oil Change Sticker Genuine BMW Full-Strength Coolant - 1 Liter Looking to go even further and upgrade your Crank Hub as well? Check out T#585961 and T#599784!
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Dinan Underdrive Crankshaft Pulley Kit - E60 M5, E63/64 M6 S85 5.0L ...
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Dinan - Corporate Logo
T#:21078436
Part#: D560-0001
Ships in 5 Business Days
11% off MSRP $ 506.99

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$ 449.99 USD
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11% off MSRP
$ 506.99

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$ 449.99 USD
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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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Crankshaft Pulley
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Corteco - Corporate Logo
T#:586900
Part#: 11238638534
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$ 545.99 USD
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This is the main crankshaft pulley commonly referred to as the harmonic balancer.

Genuine BMW Crank Pulley
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Genuine BMW - Corporate Logo
T#:32904
Part#: 11237572788
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Genuine BMW Vibration Damper
This item fits the following BMW Chassis:
E82 1M Coupe,E82,E89 Z4,E90,E92,E93

Fits BMW Engines including:
N54,N54T

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Genuine BMW Crankshaft Pulley - S62
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Genuine BMW - Corporate Logo
T#:32843
Part#: 11231406934
Ships in 4 Business Days
1% off MSRP $ 377.99

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$ 375.99 USD
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Genuine BMW Pulley
This item fits the following BMW Chassis:
E39 M5,E39

Fits BMW Engines including:
M62,S62


N55 "Bulletproof" Crank Hub & Serpentine Kit - BMW F22/23 F3X N55 3.0...
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Packaged by Turner - Corporate Logo
T#:1241398
Part#: TMSF30N55BPKT
In Stock
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This product was last offered at the strikethrough price on
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$ 490.99 USD
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BMW has a seemingly endless number of fans of the N54/N55/S55 engines, three straight-six turbo engines that are each capable of 750+ horsepower, but that doesn't mean they were without their faults! BMW's N54 had a notoriously rocky start with reliability due to multiple issues such as fuel injectors failing, turbos failing, serpentine belt failure, crank hubs coming loose, and more... BMW made multiple attempts to fix the issues plaguing the N54, but they could only do so much and the fixes rolled out seemed temporary at best. Following the N54, BMW released their updated N55 and S55 engines, giving many people hope that these engines would address the previous issues. Unfortunately, this was only some-what the case. Crank hubs and crank bolts continued to loosen over time and serpentine belts continued to shred themselves and get pulled into the oil pan through the front main seal. For all three engines, this meant a single failure could effectively turn your engine into an oversized paperweight. Luckily for us, the BMW community is full of skilled enthusiasts who have gladly taken up the task to offer solutions! The first headache to be addressed was the Crank Hub and Bolt. Using a simple plate that fits perfectly over your crank hub's hex-head bolt and mounts up against the damper, the crank bolt is effectively locked in place, preventing it from being able to back out until the plate is fully removed. Next up was the serpentine belt failures. It's not known what exactly causes the serpentine belt to split, but once it does, the pieces hanging off of the belt wrap around and behind the damper. This leads to the belt breaking up into smaller pieces and eventually getting pushed between the crank hub and rear main seal into the oil pan. These small pieces of debris get caught in and block the oil pickup, preventing oil flow and leading to engine failure. To prevent this, multiple aftermarket companies came up with their own versions of Crank Seal Plates. This plate is installed behind the front damper, blocking the opening that allows the serpentine belt to pass between the crank hub and seal, keeping debris out of your oil pan! Also included in this kit are the components to service your front Oil Cooler/Filter Housing gaskets, refresh your drive belt system, and install the aftermarket upgrades. Kit Features and Contents: Vargas Turbo Crank Bolt Capture Vargas Turbo Crank Seal Plate ECS Kevlar reinforced accessory belt OEM Belt Tensioner & Idler Pullies Liqui-Moly Longtime High Tech Engine Oil (5w-30) - 7 Liters OEM Hengst Oil Filter OEM Oil Filter/Cooler Housing Gaskets TMS Oil Change Sticker Genuine BMW Full-Strength Coolant - 1 Liter
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Genuine BMW Crankshaft Pulley With Vibration Damper - E90 335d E70 X5...
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Genuine BMW - Corporate Logo
T#:32923
Part#: 11238511371
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10% off MSRP $ 831.99

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$ 751.99 USD
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$ 831.99

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Genuine BMW Vibration Damper -
This item fits the following BMW Chassis:
E70 X5,E90

Fits BMW Engines including:
M57


Genuine BMW Crank Pulley With Vibration Damper - E31 E38 E39 E53 M62 ...
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Genuine BMW - Corporate Logo
T#:32875
Part#: 11231741773
Special Order: No Guaranteed ETA
3% off MSRP $ 905.99

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$ 880.99 USD
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$ 905.99

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$ 880.99 USD
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Genuine BMW Vibration Damper -
This item fits the following BMW Chassis:
E38,E39,E53 X5

Fits BMW Engines including:
M62


Crankshaft Pulley With Vibration Damper for F15 N57 3.0L
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Corteco - Corporate Logo
T#:592806
Part#: 11238511321
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$ 573.99

This product was last offered at the strikethrough price on
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$ 557.99 USD
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Ensure the longevity of your BMW's engine with the accessory pulley.

Designed to prevent crankshaft failure caused by resonance vibrations, this accessory pulley is essential for maintaining your engine's integrity. With each cylinder firing, torque is transferred to the crankshaft, inducing vibrations. These vibrations, when synchronized with engine speeds, can lead to stress beyond the crankshaft's capacity, resulting in failure. The accessory pulley acts as a balancer, mitigating these vibrations and safeguarding your engine's longevity.

  • Prevents crankshaft failure
  • Balances vibrations for engine longevity
  • Safeguards against resonance-induced stress
  • Enhances engine performance and reliability
  • Specifically designed for BMW engines
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VAC Harmonic SuperDamper By ATI - BMW S50B32 EURO
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ATI Performance Products - Corporate Logo
T#:7355606
Part#: HPCDK-S50B32-S
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Genuine BMW Crank pulley/Vibration Damper
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Genuine BMW - Corporate Logo
T#:32873
Part#: 11231738620
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3% off MSRP $ 826.99

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$ 803.99 USD
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$ 826.99

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Genuine BMW Vibration Damper
This item fits the following BMW Chassis:
E36 M3,E34,E36,E39

Fits BMW Engines including:
M50,M52,S50,S52



Genuine BMW Vibration Damper
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Genuine BMW - Corporate Logo
T#:12928
Part#: 11231743305
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Genuine BMW Vibration Damper -
This item fits the following BMW Chassis:
E36

Fits BMW Engines including:
M42,M44

Genuine BMW Crankshaft Pulley - E39 528i Z3 2.8 M E36 328 M3 S52 ...
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Genuine BMW - Corporate Logo
T#:25072
Part#: 11281735358
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Genuine BMW Pulley - D=129mm
This item fits the following BMW Chassis:
E34,E36,E39

Fits BMW Engines including:
M50,M52,S52

VAC Harmonic SuperDamper By ATI - M50/S50/M52/S52
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ATI Performance Products - Corporate Logo
T#:639877
Part#: VAC-HPCD-M50-TR
Ships on Jul 21, 2026
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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 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. Kit includes: Damper Lightweight VAC Billet Crankshaft Pulley Mounting and Installation Hardware Trigger Ring for OBD1 systems Note: Will NOT work with S50B30 & S50B32 Euro Engines, For Street/Track cars with Air Conditioning, the Additional A/C Pulley Option is REQUIRED as the OE A/C pulley is not compatible. The additional mounting and installation hardware is also included. Made in the USA
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VAC Harmonic SuperDamper By ATI - B58
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ATI Performance Products - Corporate Logo
T#:27605443
Part#: ATI-HPCD-B58
Ships on Jul 21, 2026
$ 389.99 USD
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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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M7 Lightweight Crank Pulley - Stock Size
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M7 Speed - Corporate Logo
T#:12774050
Part#: 53-3M7101-0
In Stock
$ 159.99 USD
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M7 Lightweight Crank Pulley - 4% Overdrive - R52 / R53
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M7 Speed - Corporate Logo
T#:584439
Part#: 53-3M7101-4
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M7 Speed 4% Oversize Crankshaft Pulley for MINI Cooper

Unlocking Performance

The M7 Speed 4% oversize crankshaft pulley is your ticket to unlocking the hidden potential of your MINI Cooper. This performance-enhancing pulley is designed to add power, acceleration, and overall performance to your beloved MINI. Here's how it does the trick:

Performance Boost:

  • Safely speeds up your supercharger, delivering a significant "low end" boost and torque.
  • The result? Your MINI Cooper takes off with newfound energy and responsiveness.

Lightweight Advantage:

  • Weighing just 13 ounces, this pulley is a remarkable 88.5% lighter than the factory version.
  • Reduced crankshaft rotational mass equals more horsepower, torque, and improved throttle response.

Advanced Design

The M7 Speed 4% Crank Pulley isn't just about performance; it's also a work of art. Crafted with advanced computer modeling and precision CNC machining, it's a blend of form and function:

Materials:

  • Made in the USA from billet 6061-T6 aerospace-grade aluminum alloy.
  • Features a deep black anodized coating and laser etching for a sleek look.

Precision Machining:

  • Micro V-Belt grooves meet SAE J1459 specifications to minimize belt slippage, especially at maximum boost.

Optimal Fit:

Use it in conjunction with the M7 Speed 16% Supercharger Technology Pulley for peak performance in MINI tuning.

Reliable Performance

From the factory, MINI lacks a positive drive key on the crankshaft snout to drive the lower pulley. Most aftermarket pulleys are slip-fit and rely on the bolt to prevent slippage. The M7 Speed crank pulley is engineered differently:

Interference Fit:

The pulley is interference-fit onto the crankshaft, ensuring zero slippage even at high RPMs.

Features at a Glance:

  • Super Lightweight: Only 13 ounces (0.3 kg)
  • Sheds 6.2 lbs (2.8 kg) compared to stock
  • Achieves perfect balance through a symmetric design and precision machining
  • Includes a high-quality ARP Racing bolt and precision ground flat washer
  • Installation is a breeze

Unleash Your MINI's Potential

Proudly made in the USA, the M7 Speed 4% Oversize Crankshaft Pulley is the upgrade your MINI Cooper deserves. Unleash its hidden power and enjoy a new level of performance, reliability, and overall driving pleasure. Get ready to experience the difference.

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Adjustment Pulley W11 1.6L Engine
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Ina - Corporate Logo
T#:591703
Part#: 11288625983
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$ 28.99 USD
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Ensure your Mini's engine runs smoothly with the idler pulley, a crucial component in routing the serpentine belt. Discover the benefits below:

  • Smooth Belt Routing: Helps to effectively route the serpentine belt for optimal engine performance.
  • Prevents Rattles: Eliminates high-pitched rattles caused by worn-out bearings, ensuring a quieter driving experience.
  • Easy Installation: Simple bolt-on design requires no special tools, making installation hassle-free.
  • Enhanced Engine Performance: Maintains proper belt tension, preventing slippage and ensuring efficient power delivery.
  • Durable Construction: Crafted from high-quality materials for long-lasting durability and reliability.

Upgrade your Mini's engine with the idler pulley to maintain smooth belt operation and prevent unwanted noises.

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Hex Bolt - MINI
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Bavarian Autosport - Corporate Logo
T#:16940487
Part#: 11217616164
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This product was last offered at the strikethrough price on
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$ 9.99 USD
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Used to attach the crank pulley / vibration dampener

Hex Bolt - N52, N54
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Bavarian Autosport - Corporate Logo
T#:19792190
Part#: 11211439395
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This product was last offered at the strikethrough price on
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$ 15.19 USD
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Replacement center bolt for the engine crank pulley.

Crank Pulley With Dampener
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Corteco - Corporate Logo
T#:591632
Part#: 11237638551
Ships in 1 Business Day
$ 88.33

This product was last offered at the strikethrough price on
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$ 80.98 USD
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ATI Super Damper Harmonic Damper Stock Size B46/B48 - 3 Ring ...
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ATI Performance Products - Corporate Logo
T#:33047043
Part#: 917999
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$ 383.99 USD
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Crank Pulley With Dampener
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URO - Corporate Logo
T#:591633
Part#: 11237829906
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$ 74.25 USD
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Harmonic Balancer Replacement Kit - S55
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Packaged by Turner - Corporate Logo
T#:641974
Part#: 11237853850KT1
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The harmonic balancer on the S55 is designed to keep unwanted vibrations from destroying the engine. If your harmonic balancer is worn out or damaged your engine is at risk of possible catastrophic failure. This kit contains all of the components commonly replaced when servicing the harmonic balancer, including serpentine belts and mounting hardware.
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Crank Pulley With Harmonic Balancer - BMW N62
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T#:591601
Part#: 11237568345
Ships in 1 Business Day
$ 151.99 USD
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If you vibration damper is failing, it will usually present itself in the form of a squealing noise that sounds like a slipping belt. This is an indication that the rubber ring inside of the vibration damper has dried out and cracked, causing the pulley to slip.
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