A6429970046 PCV Valve Oil Seal for Mercedes-Benz OM642 3.0 CDI V6
This replacement PCV valve oil seal is designed for Mercedes-Benz vehicles with the OM642 3.0 CDI V6 diesel engine. The confirmed OEM reference for the seal is A6429970046.
This product is an individual PCV valve oil seal. It seals the crankcase ventilation valve to the engine block and is not a complete PCV valve or crankcase ventilation assembly.
OEM / Reference Numbers
- A6429970046 — OEM reference for the PCV valve oil seal
Compatible PCV Valve References
- A6420101791
- A6420101291
- A6420100212
- A6420101812
- A6420101312
Part Type
- PCV valve oil seal
- Crankcase ventilation valve seal
- Individual replacement seal
- Not a complete PCV valve
- Not a complete crankcase ventilation assembly
What This Part Does
The PCV valve oil seal seals the crankcase ventilation valve to the engine block on the Mercedes-Benz OM642 3.0 CDI V6 diesel engine. When the seal fails, oil can leak at the PCV valve mounting point. Replacing the failed seal restores sealing between the PCV valve and the engine block.
Compatible Applications
This oil seal is intended for Mercedes-Benz applications with the OM642 3.0 CDI V6 diesel engine using a compatible PCV valve.
Engine / Technical Details
- Vehicle brand: Mercedes-Benz
- Engine family: OM642
- Engine context: 3.0 CDI V6 diesel
- Seal OEM reference: A6429970046
- Sealing location: between the PCV valve and engine block
Common Symptom of Seal Failure
- Oil leakage at the PCV valve mounting point
Why Choose This Replacement Seal
- Replaces the individual failed PCV valve oil seal
- Designed for Mercedes-Benz OM642 3.0 CDI V6 applications
- OEM reference A6429970046 is confirmed on the product page
- Allows the sealing component to be replaced without presenting the product as a complete PCV valve assembly
Important Before Ordering
- Verify that the required oil seal OEM reference is A6429970046.
- Confirm that your Mercedes-Benz uses the OM642 3.0 CDI V6 diesel engine.
- Check that the installed PCV valve corresponds to one of the compatible references listed above.
- This product is an individual oil seal and not a complete PCV valve or crankcase ventilation assembly.
- The product page does not specify exact Mercedes-Benz models, chassis codes, model years, seal dimensions or material.
What does OEM A6429970046 fit?
A6429970046 is the OEM reference for this PCV valve oil seal used with Mercedes-Benz OM642 3.0 CDI V6 diesel applications and compatible PCV valves listed on the product page.
Are A6420101791 and A6420101291 related to A6429970046?
They are related application references, but they are not the OEM number of the seal. The product page lists A6420101791 and A6420101291 as compatible PCV valve references, while A6429970046 is the OEM reference for the oil seal.
What does the OM642 PCV valve oil seal do?
The seal prevents oil leakage where the crankcase ventilation valve mounts to the engine block.
What symptom can indicate PCV valve oil seal failure?
The product page identifies oil leakage at the PCV valve mounting point as the relevant symptom of seal failure.
Is this a complete OM642 PCV valve?
No. This product is an individual PCV valve oil seal and is not a complete PCV valve or crankcase ventilation assembly.
How do I confirm compatibility before ordering?
Confirm the OM642 3.0 CDI V6 engine, verify OEM seal reference A6429970046, and compare the installed PCV valve with the compatible valve references listed for this product.
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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