MuchBoost OM646 2.2CDI hybrid turbo, C-Class 2.2 200CDI W203 (220–250 hp)

MuchBoost OM646 2.2CDI hybrid turbo, C-Class 2.2 200CDI W203, 220–250 hp

A bolt-on MuchBoost hybrid turbo for applications including C-Class 2.2 200CDI W203, C-Class 2.2 220CDI W203. This upgrade is built for OM646 2.2CDI applications and retains a clean, vehicle-specific installation.

The turbo is based on original Garrett housings. The upgraded compressor and higher-flow turbine sides provide considerably more capacity than the factory unit, while the housings are precision-machined for the new internals.

Depending on the selected version, the manufacturer rates the turbo for approximately 220–250 hp. Final output depends on engine condition, the fuel system, intake, exhaust, cooling and, above all, the ECU calibration.

An upgraded turbo always requires vehicle-specific ECU calibration.

Futurez imports MuchBoost turbochargers and works with the manufacturer in Finland. You get secure delivery from a Finnish seller, a wide choice of payment methods and help selecting the correct turbo version. Every purchase also earns F* Bonus points.

Versions and technical differences

220 hp version

This version is built for approximately 220 hp, with upgraded internals sized for this output level.

• Manufacturer-rated power potential approximately 220 hp
• Upgraded billet compressor wheel
• Larger high-flow turbine wheel
• Clipped turbine wheel helps reduce exhaust backpressure
• Reinforced journal bearing system for higher boost
• Precision-machined compressor housing and seal plate
• Variable-geometry VNT system calibrated on a flow bench
• Turbo core is high-speed VSR balanced

250 hp version

This version is built for approximately 250 hp, with upgraded internals sized for this output level.

• Manufacturer-rated power potential approximately 250 hp
• Larger high-flow turbine wheel
• Precision-machined turbine housing

Common to all versions

• Original Garrett housings and actuator
• Compressor and turbine wheels are balanced separately, followed by high-speed VSR balancing of the complete core
• Required gasket set is included
• Bolt-on fit in place of the original turbo

Upgrade service or a complete new turbo?

You can order the turbo either by sending your original unit to us as the build core or by choosing a complete, newly built turbo.

Send my original turbo: The serviceable original housings are used to build the new hybrid turbo. After ordering, we will email the return instructions so the turbo can be sent through us for the upgrade. The work and delivery normally take around 2–3 weeks from the time the turbo arrives for inspection. The supplied unit must be original and its housings must be serviceable.

Complete new turbo: You receive a complete, ready-built hybrid turbo. Your original unit does not need to be sent in, so it can be retained or sold separately.

Read more about the core exchange process and shipping instructions.

Examples of compatible vehicle applications

• 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

Engine codes

OM646

Related OE and turbo 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
A6460901080
A6460960399
A6460960499
A6460960099
A6460900080

Before ordering, check the engine code and the identification numbers on the original turbo. If you are unsure about fitment, contact us with the VIN and the old turbo numbers and we will help verify the correct version.

Tip: Ask us for the gaskets, bolts, oil lines and other installation parts at the same time. A new turbo should not be installed with a restricted oil feed or leaking gaskets.

MuchBoost turbochargers carry a 12-month manufacturer warranty covering manufacturing and material defects. The warranty does not cover failures caused by external factors such as lubrication problems, unsuitable engine calibration or installation errors.