Oil Separator PCV Repair Kit – Mercedes OM642 / OM611 / OM612 | Vito / Sprinter | OEM A6420100591
A failed oil separator on Mercedes-Benz OM642, OM611, and OM612 diesel engines causes oil consumption, oil mist in the intake, and PCV fault codes. This repair kit restores correct oil separator function — compatible with assembly A6420100591. Mercedes-Benz Vito W639 (OM642/OM611), Sprinter W906 (OM642/OM651) — and other models with OM611, OM642 diesel engines
Fits OEM #A6420101891.
When to Inspect This Part
- whistling or excessive crankcase vacuum
- rough or unstable idle
- increased oil consumption
- oil residue in the intake
- smoke after warm-up
- mixture faults or an intake air leak
What's Included
- Repair components supplied for this SKU and shown in the product photos; no complete surrounding assembly is included
Important Limitations
This repair is suitable only when the valve cover or oil-separator housing and the connected breather hoses are serviceable. Cracks or blocked hoses require separate correction.
Part Number / PN
A6420101891, A6420100391, A6680160334, 68188865AA, 31382010G, 05080116AA, K05080116AA, 5080116AA, 5066845AA, A6110160334, A6420102091, A6680160434, A6420101991, 5114348AB, 026012, A6110160134, A0001801015, A6420100591, A6110160234, A6680160534, A6420100291, 6110160134, 6110160334, 0001801015, 31382009f, 6420100591, 611016034, 6110160234, 6680160534, 5175514ab, 6420100191, 6420100891, 6420100691, hr6110160334a, a6291800315, 6291800315, 420100591
Important Fitment Check
Before ordering, compare the part design, dimensions, connectors, and every available OEM/P/N marking with the part installed on the vehicle. Matching OEM/P/N A6420101891 is the primary fitment check.
FAQ
How do I confirm fitment for this Oil Separator PCV Repair Kit?
Compare the exact OEM/P/N and physical design with the installed part. The primary reference is A6420101891. Do not select the part by vehicle model alone.
What symptoms may indicate a problem with this Oil Separator PCV Repair Kit?
Confirmed symptoms include whistling or excessive crankcase vacuum, rough or unstable idle, increased oil consumption, oil residue in the intake. Diagnose the original assembly before ordering so another fault is not mistaken for this part.
What is included with this Oil Separator PCV Repair Kit?
The confirmed kit contents are: Repair components supplied for this SKU and shown in the product photos; no complete surrounding assembly is included.
Does this listing include the complete surrounding assembly?
This repair is suitable only when the valve cover or oil-separator housing and the connected breather hoses are serviceable. Cracks or blocked hoses require separate correction.
What should be checked before installation?
Check the OEM/P/N, dimensions, connectors, orientation, and condition of the mating components. Installation should follow the correct service procedure for the specific vehicle and assembly.
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Orders ship within 1–2 business days.
Standard delivery:
- USA: Some items ship from our US warehouse and arrive within 3 business days.
- USA-EU: 10–21 business days
- Worldwide: 14–30 business days
Shipping cost is shown at checkout.
Can I exchange or return an item?
Yes, you can exchange or return an item within 14 days of purchase. This right is guaranteed to you by the Law on the Protection of Consumer Rights
To use this feature, please make sure that:
- the product was not in use and has no traces of use: scratches, chips, abrasions, etc.
- the goods are fully completed and the integrity of the packaging is not violated
- retained all labels and factory markings