Find Parts That Fit Your Vehicle

Crankshaft Pulleys & Harmonic Balancers

Keep your drive belt system in check by replacing your BMW's crankshaft pulleys and harmonic balancers.
Sort By:

Vargas N54/55 Billet Crank Seal Guard - BMW N54 N55 3.0L
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:638889
Part#: VTT-CRANKGUARD
In Stock
Starting at $ 89.99 USD
Free Shipping
Starting at $ 89.99 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
Show More Show Less
URO Crankshaft Vibration Damper - 11237573655
2X Entries Into Our F80 M3 Sweepstakes
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.
Show More Show Less
Crankshaft Pulley
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:591616
Part#: 11281735358
Ships in 2 Business Days
$ 98.99 USD
Free Shipping
$ 98.99 USD
Free Shipping
Reduces vibrations and connects accessories

Crankshaft Pulley With Vibration Damper
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:593668
Part#: 11237564969
Ships in 2 Business Days
$ 234.99 USD
Free Shipping
$ 234.99 USD
Free Shipping
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.
Show More Show Less

Crank Pulley With Dampener for MINI R5X R6X
2X Entries Into Our F80 M3 Sweepstakes
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
Free Shipping on orders $49 and up
$ 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.
Show More Show Less
M7 Speed - Corporate Logo
T#:12774050
Part#: 53-3M7101-0
In Stock
$ 159.99

This product was last offered at the strikethrough price on
08-31-2026

$ 140.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 159.99

This product was last offered at the strikethrough price on
08-31-2026

$ 140.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up

M7 Speed - Corporate Logo
T#:584439
Part#: 53-3M7101-4
Back Ordered
Sale - Save 5% $ 159.99

This product was last offered at the strikethrough price on
08-31-2026

$ 151.77 USD
Free Shipping
Sale - Save 5%
$ 159.99

This product was last offered at the strikethrough price on
08-31-2026

$ 151.77 USD
Free Shipping

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.

Show More Show Less
Adjustment Pulley W11 1.6L Engine
We Price Match - Give Us A Call or Chat!
Ina - Corporate Logo
T#:591703
Part#: 11288625983
In Stock
$ 31.99

This product was last offered at the strikethrough price on
08-12-2026

$ 28.99 USD
Free Shipping on orders $49 and up
$ 28.99 USD
Free Shipping on orders $49 and up

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.

Show More Show Less

Crank Pulley With Harmonic Balancer - BMW N62
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:591601
Part#: 11237568345
Ships in 2 Business Days
$ 151.99 USD
Free Shipping
$ 151.99 USD
Free Shipping
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.
Show More Show Less

Crank Pulley With Dampener
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:591633
Part#: 11237829906
Back Ordered
$ 74.25 USD
Free Shipping
$ 74.25 USD
Free Shipping