Fix PCV Failure on Audi & Porsche 4.0T V8 Without Replacing the Entire Oil Separator!
Restore proper crankcase ventilation and engine performance without the high cost of a full oil separator replacement. This Klifex PCV repair kit allows you to replace only the failed internal diaphragm — the most common failure point in 4.0T Twin-Turbo V8 engines.
Over time, the factory membrane breaks down due to extreme heat and boost pressure. This leads to whistling noises, oil consumption, rough idle, and engine faults. Replacing just the diaphragm is a proven and cost-effective solution.
Important Note: Please verify your part number and engine type before purchase to ensure compatibility.
Common Symptoms of PCV Failure:
• High-pitched whistling noise at idle
• Increased oil consumption
• Rough idle or engine misfires
• Check Engine Light (CEL)
• Vacuum leaks and unstable engine operation
Why This Repair Kit Works:
• Restores proper crankcase pressure regulation
• Eliminates vacuum leaks and engine noise
• Helps reduce oil consumption
• Prevents further engine performance issues
• Cost-effective alternative to full oil separator replacement
Engineered for High-Performance Engines:
• Designed for 4.0L Twin-Turbo V8 engines
• Handles high boost pressure and temperature
• Made from premium oil-resistant elastomer
• Resistant to cracking, hardening, and wear
• Long service life under extreme conditions
Perfect Fitment:
• Direct replacement for OEM diaphragm
• Matches OEM specifications for precise fit
• Compatible with oil separator part numbers: 9A710349501;PAB10349500
Compatibility:
Fits Audi and Porsche vehicles with 4.0T V8 engines:
Porsche:
Panamera (2017–2024)
Cayenne (2018–2026)
Audi:
RS6; RS7 Sportback (2020–2026)
RSQ8 (2020–2026)
A8; S8 (2018–2026)
Q7; SQ7 (2016–2026)
Cross Reference Part Numbers:
PAB10349500;PAB103495;PAB10346400;9A710349501;9A710346401;9A710346402;0P2103495F;0P2103495D;0P2103464D;PAB103495B;PAB198542;0P2198542
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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