A common failure inherent to the intake manifold of OM642 V6 CDI / CRD engines is for breakage of the actuating mechanisms on the intake swirl flap system. The plastic material used in the construction of the intake manifold is the main source of the problem. These swirl flaps help create better torque low down and enhance fuel economy. However the material of this lever that controls the swirl flaps has been incorrectly specified. Over time this less robust plastic material cannot withstand the constant heat cycles and mechanical stresses, therefore embittering and weakening the material leading to inevitable failure. Our Premium intake manifold repair kit is the only solution which solves all of these issues during your first and only repair... One of the faults of the OM642 diesel engine is the defective intake manifold flaps, they stop working due to the wear of the chuck fixing clips, the thrust guide of the connection to the flaps, and the seat plates on the dampers levers. The cause of wear is the material from which the vortex dampers drive system itself is made - plastic. Over time, the connection points of the linkage and the flaps wear out, this leads to a malfunctioning system of the vortex dampers of the manifold. Engine control module stored pending codes for Intake Manifold Air Flap or Runner Control System problems, in order to fix this problem need a complete replacement of the "Intake Manifold Assembly"...... but by using our new repair kit, specially designed to save you money, you will not have to replace complete Intake Manifold Assembly. Even if the Swirl Valve Arms on your manifold are very worn, replacement of just the Connecting Rod usually restores full function.