The A6460108698 part number corresponds to a Positive Crankcase Ventilation (PCV) component (often referred to as an oil separator or crankcase rebreather) for Mercedes-Benz 2.2 CDI diesel engines. As of 2026, this part is commonly replaced either as a complete unit or via repair kits that include the internal rubber membrane and cap.
A failing PCV valve or cracked internal diaphragm in these engines often presents specific mechanical issues:
Oil Leaks: Cracking in the housing or gaskets can cause oil to leak onto the catalytic converter, leading to smoke and a burnt oil smell.
Rough Idle and Smoke: Damaged membranes can lead to poor crankcase pressure regulation, causing rough idling or blue smoke from the exhaust.
Flap Damage: A broken internal diaphragm can send debris into the air intake manifold, potentially clogging or breaking internal swirl flaps.
Compatibility and Fitment
This component is designed primarily for the OM646 and related 2.2L CDI diesel engines used across several Mercedes-Benz model lines:
C-Class: Including W203 and W204 models (e.g., C200 CDI, C220 CDI).
E-Class: Specifically, W211 and W212 models (e.g., E200 CDI, E220 CDI).
Commercial Vehicles: Frequently found in Mercedes-Benz Sprinter (W906) and Vito models using the 2.2L diesel powerplant.
What's in the box
1 x Housing
1 x Diaphragm
1 x Spring
