Akrapovic Valve Actuator Kit - C205 | W205 | C63 AMGAkrapovic Valve Actuator Kit C205 W205 C63 AMG For vehicles with the base Mercedes AMG exhaust system, which is then replaced by the Akrapovic Evolution Line system, the Valve Actuator Kit (P HF985) is a mandatory upgrade. If the Evolution Line system replaces the Mercedes AMG performance exhaust system, the Valve Actuator Kit (P HF985) is not required.

Optimized for increased flow and maximum performance

5" bar and plate intercooler core made from T5052 aluminum

Ignition Timing Precisely Calibrated for 91 Octane Fuel

**Does NOT fit 2002+ Golf/Jetta with Automatic Trans

Forward Hole: 101% increase over stock GTI 21

Rooted in Denmark

When installing onto a small port cylinder head

as the silicone is more robust than the flimsy factory rubber

You Simply Will Not Ever Go Back to a Heavy Crank Pulley After Installing This One

Installation Guide

Part numbers

and a DME/ECU Software Upgrade