Fix Porsche Cayenne 4.8L PCV Issues Without Replacing the Oil Separator!
Restore engine stability, eliminate vacuum leaks, and reduce oil consumption with this 85mm PCV diaphragm designed for Porsche M48.01 engines. Replace only the failed membrane instead of the entire oil separator assembly and save significantly on repair costs.
Over time, the factory diaphragm becomes brittle due to heat and oil exposure. This leads to vacuum leaks, rough idle, poor fuel efficiency, and unstable engine operation. This replacement restores proper crankcase ventilation and engine performance.
Important Note! Please verify your engine type and OEM part number before purchase to ensure compatibility.
Common Failure Symptoms:
• Unstable or fluctuating idle
• High-pitched whistling noise from engine cover
• Increased fuel and oil consumption
• Hard starting or occasional misfires
• Vacuum leaks affecting engine performance
Why This Repair Kit Works:
• Restores proper crankcase pressure and airflow
• Eliminates vacuum leaks and engine noise
• Improves idle stability and fuel efficiency
• Reduces oil consumption
• Cost-effective alternative to full oil separator replacement
Technical Specifications:
• Diameter: 85mm
• Designed for Porsche 4.8L M48.01 engine
• Made from premium oil-resistant elastomer
• Durable and heat-resistant for long service life
Perfect Fitment:
• Direct replacement diaphragm
• Fits oil separator part numbers: 94810723601;94810723602;94810723603;94810723652;94810723653;07L103471AC;07L103471AA;07L103471L
Compatibility:
Porsche Cayenne 4.8L (S; Turbo)
Engine: M48.01
Important Installation Note:
This diaphragm is not compatible with M48.51 engines. If your oil separator has two outlets, it is M48.51 and this part will not fit.
After installation, allow the engine to idle for several minutes before driving so the ECU can adapt to the restored vacuum pressure.
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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