The Turbosmart Kompact EM Dual Port VR29 is a billet aluminum plug-and-play upgrade for the factory diverter valve on the 2015-2021 Mercedes-Benz C63 with the 4.0L M177 engine. EM means it is a direct OE-mount valve with an integrated solenoid, so it bolts in and plugs into the factory harness with no tuning. The dual-port design vents to atmosphere and recirculates with sequential timing for quiet daily driving and full response under boost.
| Type | Kompact EM Dual Port (VR29) blow-off valve |
| Operation | Dual port (atmospheric + recirculating) |
| Fitment | 2015-2021 Mercedes-Benz C63 4.0L (M177) |
| Body | Billet aluminum |
| Mounting | Direct OE-mount plug-and-play (integrated solenoid) |
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