MuchBoost M139 Upgraded Turbocharger with a Custom Billet Compressor Wheel 6+6 Blades. It is based on an original KKK Turbocharger, which means that the installation is 100%P&P. The turbocharger is meant to work with Mercedes A45, CLA45, GLA45 with the M139  386-421HP engines. The turbo delivers up to 142% power (166 extra HP) over the factory specs. […]