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RKX VW & Audi 4.2L & 5.2L PCV Valve assembly Diaphragm

RKX VW & Audi 4.2L & 5.2L PCV Valve assembly Diaphragm


Genuine RKX PCV valve replacement diaphragm.

New version 4.0 has been refined to be the most durable PCV valve EVER!

Designed to replace broken / ruptured PCV diaphragms on the 4.2 Land 5.2L engine without having to replace the entire PCV assembly!

Diaphragm is made from high quality Viton and designed to be more durable.

Volkswagen & Audi do not sell this as a spare part!

They want you to replace the entire PCV assembly at a cost up to $350 for some applications!


Advantages of replacing only the PCV diaphragm:

- Cost savings

-Higher quality material to maximize lifespan

- Retain high quality OEM PCV assembly / oil separator

- Once the PCV assembly is removed install is quick and easy.




Audi 4.2L & 5.2L FSI 2004* - 2011**

(S6, RS6, A8, S8, R8, Q7, S5, RS5)

Volkswagen 4.2L FSI 2006* - 2011


 *Does not fit the older timing belt driven 4.2l engines
used from 1999 up to 2006 in some applications!
** Does not fit 2010+ R8 5.2L V10


Listing is for PCV membrane only. PCV assembly pictured is not included

Fits PCV assembly part number: 079103464D, 079103464F, 079103464H, 079133424P 

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