Eaton’s M45 supercharger was supplied on various models of Mercedes from C-Class, CLK, SLK and E-Class models. Using Eaton’s earlier gen rotor packs they are good dependable superchargers. Please note – this M45 page does not cover the more complicated BMW Mini version of the M45 unit, please see our page specifically for that model.
Good though they are, these superchargers can be subject to premature seal, bearing wear, or failure of the drive coupler. A degree of maintenance is required to keep things working just as a car’s engine needs it. Rattling at idle is the first indication that something is going wrong, usually that a bearing is starting to wear, or that a drive coupler is fractured and failing. The important thing is to have them repaired when you hear early signs of something being wrong – if they are left rattling too long and the damage will spread from bearing wear, which is curable, to wear of the rotors and/or main casing, which can become bad enough to scrap the supercharger.
Replacing the bearings and oil seals in your supercharger will give it a new lease of life and peace of mind. As long as issues are not ignored and repaired early your supercharger should be serviceable, our Eaton M45 supercharger rebuild services start at £345).
Please note all quoted prices unless otherwise stated include UK vat at 20%.
M45 SNOUT REBUILD
If you’ve found a leaky snout oil seal, used a scope or suspect a snout bearing needs to be replaced. We can service your M45 snout from just £125 plus return shipping – a cost-effective way to have your car back to good health. Our M45 snout rebuild service includes front and rear snout bearings, snout oil seal and the required oil to fill the supercharger after reassembly, plus a good clean!
BUT – if you have any doubt over the condition of the rear bearings, it would be advisable to change them as well. The rear bearings are prone to failure, and you may wish to avoid having to remove and refit the supercharger again in the near future. For the sake of two more bearings first time around consider opting for our M45 supercharger rebuild service!
M45 SUPERCHARGER REBUILD
Our M45 supercharger rebuild service includes a mix of high-quality aftermarket bearings and seals chosen for maximum life and specification to match OE alongside original OE components where available. We inspect the supercharger, check tolerances and advise if required, we then deep clean and replace all the main components needed to bring a new lease of life to your blower. This service starts from £345 plus return shipping.
ROTOR PACK BEARINGS & SEALS
Our M45 supercharger rebuild kits do not include the pair of bearings and seals situated between the rotors and timing gears of the rotor pack. This is because Eaton rolls the casting onto the bearing outer race at manufacture, permanently sealing them in, meaning the casing must be fractured to remove those bearings. That said, these are in an oil bath and rarely fail – when rebuilding superchargers, we do not change the rotor pack bearings. If they do fail, some service providers in the US do offer rebuild of the rotor pack, but the Eaton Corporation themselves consider this to be an unreliable and often unsuccessful route to repair – when the rotor pack is worn out or damaged the only dependable solution is a new rotor pack.
If you want to attempt to rebuild your Eaton M45 rotor pack we can supply you the parts, but caution that it is not always successful.