S55 M3/M4 Crank Hub Fix kit


This kit includes all recommended components necessary in order to successfully remove and replace your stock S55 crank hub with an upgraded 2 piece Maximum PSI keyed crank hub. All components included in the kit are listed below. Professional installer discretion is highly advised in deciding if any other components need replacing during the process of replacing the crank hub. Any specialty tools that would not be found in a non-specializing automotive shop can be added for an additional cost and are included as options for this Crankhub Fix Kit.

We highly suggest that this Crank Hub Kit ONLY be installed by qualified personnel. Timing tools are required in order to complete this procedure. Improper installation may cause irreversible engine damage. Local Southern California customers please contact us today to schedule your appointment (800) 438-2808 (all in house installations come with a 1 year / 10,000 mile warranty)

Allow 5-7 business days for shipping after date of purchase


  • BMW F80 M3 (2015 - 2018)
  • BMW F82 M4 (2015 - 2018)
  • BMW F82 M2 Competition (2019)
  • The items in this kit are compiled specifically for the BMW S55 engine and therefore will fit any other unlisted models that use a BMW S55 engine


  • Maximum PSI Keyed Crank Hub
  • Valve Cover Gasket Set
  • Front Crank Seal - Crankshaft Seal
  • Bolt for Timing Chain Sprocket - Intake/Exhaust Camshaft
  • Cover Seal for Brake Booster Vacuum Pump
  • Oil Pan Gasket
  • Engine Oil Pan Bolt Kit (Aluminum)
  • Coolant / Antifreeze (Blue) (1 Gallon)
  • Engine Oil - 5W-30 Synthetic (7 Liters)
  • Oil Filter Kit


  • Crankshaft Alignment S55 Timing Tool Kit

Part availability is subject to manufacturers on hand quantities. If ordered, the product may not ship till items are back in stock as per manufacturers timelines.