MuchBoost OM629 4.0 V8 hybrid turbo set, Mercedes GL-Class 420CDI X164 (450–500 hp)

MuchBoost OM629 4.0 V8 hybrid turbo set, Mercedes GL-Class 420CDI X164, 450–500 hp

A bolt-on MuchBoost hybrid turbo set for applications including Mercedes GL-Class 420CDI X164, Mercedes E-Class 420CDI W164. This upgrade is built for OM629 4.0 V8 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 450–500 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

450 hp version

This version is built for approximately 450 hp, with upgraded internals sized for this output level.

• Manufacturer-rated power potential approximately 450 hp
• Upgraded billet compressor wheel
• Larger high-flow turbine wheel
• Clipped turbine wheel helps reduce exhaust backpressure
• Reinforced journal bearing system for higher boost
• Variable-geometry VNT system calibrated on a flow bench
• Turbo core is high-speed VSR balanced

500 hp version

This version is built for approximately 500 hp, with upgraded internals sized for this output level.

• Manufacturer-rated power potential approximately 500 hp
• Larger high-flow 9-blade 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 turbos

Examples of compatible vehicle applications

• Mercedes GL-Class 420CDI X164 – 306HP
• Mercedes E-Class 420CDI W164 – 306HP
• Mercedes E-Class 420CDI W211 – 314HP (MY 2002–2009)
• Mercedes S-Class 420CDI W221 – 320HP (MY 2005–2013)

Engine codes

OM629

Related OE and turbo numbers

765417-5001S
765417-0001
765001-0003
765001-0002
765001-0001
765418-5001S
765418-0001
765002-0003
765002-0002
765002-0001
A6290900880
A6290901280
A6290900680
A6290900980
A6290901380
A6290900780

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.