Packaged by Turner Crankshaft Pulleys & Harmonic Balancers for BMW F82 M4 S55 3.0L

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

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S55 "Bulletproof" Crank Hub & Serpentine Kit - BMW F8X S55 3.0L ...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:1241399

Part#: TMSS55BPKT

Ships on Oct 21, 2026

Sale - Save 3% $ 794.99

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

$ 769.29 USD

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Qty

Sale - Save 3%

$ 794.99

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

$ 769.29 USD

Add to Wish List

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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Harmonic Balancer Replacement Kit - S55

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:641974

Part#: 11237853850KT1

Ships on Oct 21, 2026

$ 1,099.99

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

$ 1,073.99 USD

Add to Wish List

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$ 1,073.99 USD

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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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Packaged by Turner Crankshaft Pulleys & Harmonic Balancers for BMW F82 M4 S55 3.0L

S55 "Bulletproof" Crank Hub & Serpentine Kit - BMW F8X S55 3.0L ...

Harmonic Balancer Replacement Kit - S55

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