LDU Motor & Reduction Box Rebuild Kit – With O-rings

Includes Smoothbev PRO high-quality gaskets. READ MORE HERE

Restore your Tesla Large Drive Unit Motor and Reduction Box to proper operating condition with this complete bearing and gasket kit.

This kit combines genuine SKF bearings with high-quality sealing components, making it ideal for professional workshops and experienced EV technicians performing full LDU and reduction box rebuilds.

Common Problems This Kit Solves

• Coolant leaks into the motor or inverter

• Whining / grinding noises caused by worn rotor or gearbox bearings

• Insulation faults leading to HV isolation errors
  

Kit Contents 

Bearings (SKF – genuine & authenticated):

• 2× SKF hybrid ceramic rotor bearings

• 2× SKF bearings for the primary shaft

• 2× SKF reduction box main differential high-speed bearing

• 2× SKF reduction box countershaft high-speed bearings

O-Rings:

• 19× O-ring gaskets – high-quality FKM (Viton®) with high resistance to high-temperature oil and coolant

• 3× Inverter inner cooling square gaskets – high-quality EPDM with high resistance to coolant

• 1× Gear middle-part cooling gasket – high-quality EPDM with high resistance to coolant

• 1× Electric motor back cover cooling gasket – high-quality EPDM with high resistance to coolant

• 1× Stator back cover cooling gasket – high-quality EPDM with high resistance to coolant

Oil Seals:

• 2× Output shaft seals

• 1× Gearbox oil seal
  
  

Vehicle Compatibility

• Tesla Model S (2012–2021)

• Tesla Model X (2015–2021)
  Versions: 60, 60D, 70, 70D, 75, 75D, 85, 85D, 90, 90D, 100D
  Performance: P85D, P90D, P100D

• Mercedes-Benz B-Class Electric Drive (B250e) (2014–2017)

• Toyota RAV4 EV (2012–2014)

Key Features

• Genuine SKF bearings, verified via SKF Authenticate app

• High-temperature and chemical-resistant sealing materials

• Designed specifically for high-voltage EV motor and LDU repairs

• Prevents repeat failures caused by coolant ingress

• Suitable for full LDU rebuilds and preventive maintenance