Description
KIT is non refundable. Our KIT does not offer support for any side-efects of coolant leake, coolant system faults or impropper kit installation. Our KITs are validated with 7 EVC Certified workshops and applied daily without any issues. WE CANNOT CHECK BY VIN NUMBER IF IT FITS TO YOUR ENGINE. THIS KIT IS NOT FOR DIY-ers
Road tested repair kit for electric motor and gearbox. All your questions are answered here to avoid emails due limited resources in EVC R&D Lab.
Type: eVito , EQV
Year: 2018-2023
Part number: A4473408601, a4473402401, A4473407600, other
Not supported : 4473402401 This version has different seal hole diameter and our Holygrail does not fit need customization. Hole is 6.0 andseal is 6.2. It is possible bud needs small enginnerings.
Model: ZF
Motor: Induction
KIT consists of :
– 7 ball bearings,
– rotor oil seal,
– 2 halfshaft seals
– special PTFE Nylon Seal to replace SIC Kaco Seal
– special heat treated and nano coated custom EVC rotor sleeve.
– KIT IS FOR eDrive and Gearbox
We do not offer anymore SIC Seal or Coolant delete option. This kit is designed with materials and methods based on our many years of experience to outlast the designed life of the electric motor. KIT is non refundable.
Before purchasing check our manual: https://evclinic.eu/evc-knowhow-academy/evc/other-manuals/eqv-edrive-coolant-bypass-explanation/
Pass: zfpwned
⚠️ HIGH VOLTAGE SAFETY WARNING
DANGER: HIGH VOLTAGE ELECTRICAL SYSTEM. RISK OF FATAL ELECTRIC SHOCK.
The Tesla Large Drive Unit is part of a high-voltage propulsion system. Improper isolation, disassembly, testing or reassembly can result in electric shock, severe injury, burns, fire or death.
Mandatory safety requirements:
- Work must be performed exclusively by appropriately qualified EV technicians with the required high-voltage certification, including HV Level 3 or equivalent where applicable.
- Before removing or disassembling the drive unit, follow the vehicle manufacturer’s approved high-voltage shutdown and isolation procedure.
- Disconnect the relevant low-voltage service disconnect or service loop and 12V supply as specified in the applicable procedure. These actions alone do not establish electrical safety.
- Prevent accidental re-energization using appropriate lockout and identification measures.
- Observe all manufacturer-specified capacitor discharge times.
- Verify the absence of hazardous voltage at the prescribed measurement points using appropriately rated and verified test equipment.
- Use approved high-voltage PPE, insulated equipment and suitable workshop safety procedures.
- Never touch exposed HV connections, inverter terminals or internal electrical components before safe isolation has been verified.
- Never energize or operate a partially assembled drive unit.
- After repair, perform the applicable insulation resistance, sealing, electrical safety and functional validation tests before returning the vehicle to service.
WARNING: A switched-off vehicle or disconnected 12V battery does not mean the high-voltage system is electrically safe.
Unauthorized or unqualified attempts to repair the Tesla LDU can cause serious injury and irreparable damage to the drive unit.
EV Clinic recommends installation only by trained and certified EV repair professionals.
NP658549, 0899331227 , 0735300409, F-613620, 0735302636, 0501*342*766, 0501*342*766, 68x87x8
FAQ
What is the price of the repair kit?
The current price is always listed directly in our webshop.
What is the dispatch time?
We normally prepare and dispatch the kit within 48 hours after receiving the order. The actual delivery time depends on the courier and destination country, and EV Clinic cannot guarantee or control the courier transit time.
What is the difference between the EVC kit and the original OEM solution?
The EVC kit is not a copy of the original solution. It was developed to eliminate the known failure mechanism of the original design.
Our modified sealing components and related solutions are developed based on real-world failures, measurements, repeated repairs, and long-term testing of eDrive units.
The goal is not simply to replace a worn original component, but to address the reason why it failed in the first place.
When replacing the failed parts with the same OEM design, the drive unit is largely returned to its original factory configuration, including its known weak points.
The EVC solution modifies critical sealing elements and the sealing concept itself in order to improve long-term reliability.
Our approach is simple: do not repair only the consequence, eliminate the root cause of the failure.
More information about the difference between the OEM approach and our modified eDrive solutions:
https://evclinic.eu/2026/06/04/the-first-emotor-to-reach-1000000-km-no-service/
Are EVC components tested in real-world conditions?
Yes. EVC solutions are developed through our own R&D, failure analysis, eDrive remanufacturing, measurement, and long-term validation in real vehicles.
One of our modified drive systems reached 1,000,000 km without an eMotor overhaul, demonstrating the long-term potential of addressing the original design weaknesses instead of simply repeating the OEM repair.
Can I order only the repair kit without sending the eMotor to EV Clinic?
Yes. If the repair kit is available as a standalone product in our webshop, it can be ordered directly.
The customer or repair workshop is responsible for correct disassembly, installation, measurements, assembly procedures, and final validation of the drive unit.
How can I confirm that the kit fits my Mercedes EQ?
Before ordering, compare the drive unit model and part numbers with the compatibility information listed on the product page.
As several drive unit variants may exist within the same vehicle model, we strongly recommend confirming the eDrive identification and part number before placing the order.
