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MuchBoost OM642 Upgraded Turbocharger with a Custom Billet Compressor Wheel and Enlarged Turbine Wheel. They are based on original Garrett turbocharger, which means that the installation is 100%P&P. The turbocharger is meant to work with Mercedes Benz 3.0CDI with an OM642 265HP engine.

The turbo delivers up to 151% power (135 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 350HP to 400HP.

MuchBoost OM642 350

Upgraded turbocharger with an estimated potential ~350HP at the crank. The list of modifications:

  • Precisely machined seal plates and compressor housing,
  • Genuine Garrett  compressor housing,
  • Genuine Garrett bearing housing,
  • Genuine Garrett exhaust manifold,
  • Genuine Garrett ceramic ball bearings,
  • Original Hella actuator,
  • More efficient and larger Billet Compressor Wheel GEN II,
  • Genuine Turbine Wheel,
  • 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 OM642 400

Upgraded turbocharger with an estimated potential of ~400HP at the crank. Modifications compared to the 350 option are the same except:

  • Billet Compressor Wheel,
  • Larger High-Flow 9 blades Turbine Wheel,
  • Machined exhaust housing.
Other Significant Modifications

To fully utilize the potential of this hybrid turbo, we recommend upgrading i.a. fuel, exhaust, cooling systems, and the clutch. Individual ECU remapping is the foundation.

Example project

One of our clients managed to make 359HP and 750Nm of torque with the OM642 350 turbo. The car was stock, except for the ECU tune. Please take a look at the dyno graph below.

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


Mercedes C-Klasse 350 CDI (W204)
Mercedes C-Klasse 350 CDI (S204)
Mercedes C-Klasse 350 CDI (C204)
Mercedes CLS-Klasse 350 CDI (C218)
Mercedes CLS-Klasse 350 CDI (X218)
Mercedes E-Klasse 350 CDI (W212)
Mercedes E-Klasse 350 CDI (W213)
Mercedes E-Klasse 350 CDI (C207)
Mercedes E-Klasse 350 CDI (C212)
Mercedes GL-Klasse 350 CDI (X164)
Mercedes R-Klasse 350 CDI (V251)
Mercedes R-Klasse 350 CDI (W251)
Mercedes M-Klasse 350 CDI (W166)
Mercedes S-Klasse 350 d (C2222)

Factory numbers



OM 642 LS DE 30 LA, 265HP

OEM number

A 642 090 23 86
A 642 090 16 86
A 642 090 13 86

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. 


350HP, 400HP

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