MuchBoost DT17 2.7HDI hybrid turbo set, Citroen C6 I 2.7HDI, 300–350 hp
A bolt-on MuchBoost hybrid turbo set for applications including Citroen C6 I 2.7HDI, Peugeot 407/407 Coupe/407 SW 2.7HDI. This upgrade is built for DT17 2.7HDI 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 300–350 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
300 hp version
This version is built for approximately 300 hp, with upgraded internals sized for this output level.
- Manufacturer-rated power potential approximately 300 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
350 hp version
This version is built for approximately 350 hp, with upgraded internals sized for this output level.
- Manufacturer-rated power potential approximately 350 hp
- Larger compressor wheel
- Larger high-flow turbine wheel
- Precision-machined turbine housing
350 hp version
This version is built for approximately 350 hp, with upgraded internals sized for this output level.
- Manufacturer-rated power potential approximately 350 hp
- Larger compressor wheel
- 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 turbos
Examples of compatible vehicle applications
- Citroen C6 I 2.7HDI – 204HP
- Peugeot 407/407 Coupe/407 SW 2.7HDI – 204HP
- Peugeot 607 2.7HDI – 204HP
Engine codes
DT17, DT17ED4, DT17TED4, DT17BTED4
Related OE and turbo numbers
723340-0012
723340-0013
723340-12
723340-13
723340-5012S
723340-5013S
723340-0011
723340-5011S
723340-11
723341-0012
723341-0013
723341-12
723341-13
723341-5012S
723341-5013S
723341-0011
723341-5011S
723341-11
0375K4
4U3Q6K682BJ
4U3Q6K682BK
4U3Q-6K682-BJ
4U3Q-6K682-BK
DPQRA4U3Q6K6
DPQRA4U3Q6K682B
4U3Q6K682BL
0375K3
4U3Q6K682AJ
4U3Q6K682AK
4U3Q-6K682-AJ
4U3Q-6K682-AK
DPQRA4U3Q6K682A
4U3Q-6K682-AL
4U3Q6K682AL
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.


