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MuchBoost OM646 Upgraded Turbocharger with a Custom Billet Compressor Wheel 6+6 Blades and Enlarged Turbine Wheel. It is based on an original Garrett Turbocharger, which means that the installation is 100%P&P. The turbocharger is meant to work with Mercedes C-Class W203/W204, E-Class W211with the OM646 122-170HP engines.

The turbo delivers up to 205% power (128 extra HP) over the factory specs. It is a great choice for someone looking for a bit extra HP from their daily driver. MuchBoost turbo allows you to get more from your engine and enjoy it even more than you’ve been so far.

We have developed 2 modification options that allow you to reach anywhere from 220HP to 250HP.

MuchBoost OM646 220

Upgraded turbocharger with an estimated ~220HP at the crank. List of modifications:

  • Upgraded journal bearings system that allows the turbo to hold more boost,
  • Genuine Hella electronic actuator
  • More efficient and larger Billet Compressor Wheel 6+6 Blades,
  • Genuine Clipped and Lightened Turbine Wheel,
  • Precisely machined seal plates and compressor housing,
  • Genuine Honeywell compressor housing,
  • Genuine Honeywell bearing housing,
  • Genuine Honeywell exhaust manifold,
  • Dynamically balanced,
  • Perfectly calibrated VNT system + dynamically balanced. We use a modern VISCOM flow bench and Schenck balancing machines,
  • The compressor and turbine wheels are balanced separately, and then the whole core is high-speed balanced using VSR balancing machines at speeds similar to the level seen in the vehicle.
MuchBoost OM646 250

Upgraded turbocharger with an estimated potential of ~250HP at the crank. Modifications compared to the 220 option are the same except:

  • Bigger Compressor Billet Wheel,
  • Enlarged Turbine Wheel,
  • Precisely machined exhaust housing.
Other significant modifications

The turbo is meant to work with ~220-250HP In order to reach that level of power, you need to adjust your fuel, exhaust, and cooling systems as well.


A set of gaskets is included with every option you choose!


Cars
C-Class 2.2 200CDI W203 122HP
C-Class 2.2 220CDI W203 150HP
C-Class 2.2 200CDI W204 136HP
C-Class 2.2 220CDI W204 170HP
E-Class 2.2 200CDI W211 122HP
E-Class 2.2 220CDI W211 150HP
E-Class 2.2 200CDI W211 136HP
E-Class 2.2 220CDI W211 170HP


Factory numbers

752990-0006
752990-0007
752990-9007S
752990-5007S
742693-0002
742693-5004S
742693-9004S
742693-5003S
742693-5002S
727461-0002
727461-9007S
727461-5007S
727461-5006S
727461-0005
727461-0004
727461-0003
727461-0002

Engines

OM646, OM646 DE 22 LA


OEM number

A6460901080
A6460960399
A6460960499
A6460960099
A6460900080


(If your engine has a different code, please send us a message. We will verify it.)


Matters you should be aware of when placing your order.
    1. The warranty is 12 months without the limit of mileage.
    2. We need about 7 working days to perform and ship the upgraded turbocharger. The parcels in European Union are shipped via DPD for just 25,00 EURO. DHL Express (airplane shipping)  is used for orders besides the EU, it costs 99,00 EURO. The average delivery time is 2-4 working days. 
    3. Every parcel is fully insured.
    4. If you didn`t find the turbo you need, feel free to contact us. We are able to perform many more upgraded turbochargers than you can find on the site. Our development department works permanently on the new models.
    5. Do you have a workshop, are you an influencer or seller of tuning parts? We are open to cooperation by offering discounts and refunds.
    6. During placing your order, please provide information as follows:
    • the engine code,
    • the car model,
    • the stock power,
    • the VIN number

These details are helpful to make the turbo correctly.

POWER RANGE

220HP, 250HP

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