RS5 PCV Valve service kit. (AMG style)
So turns out I had a hole in one of my pcv valve diaphragms and was making a complete whistle sound when at idle.
Started out thinking it was a warn bearing somewhere but as it got louder in time I had to do something
Unfortunately Audi or any other company don’t make a service kit with new seals and diaphragms, and a new PCV valve will set you back from $400 to $600.
But after opening one up and seeing if it’s possible to fix it I couldn’t help notice that they look very similar to what you would find on a Mercedes M156 6.2 V8
So I thought I go and buy one and compare the two being that a Mercedes valve cost only $130.
Not sure if I’m the first in the world to discover this but it’s definitely a money saver. And your using basically genuine parts.
https://www.vwwatercooled.com.au/for...c32cf704-1.jpg
“The Mercedes valve is the top one”
https://www.vwwatercooled.com.au/for...3c0128ba-1.jpg
https://www.vwwatercooled.com.au/for...f9fa827f-1.jpg
https://www.vwwatercooled.com.au/for...bf0e4f65-1.jpg
https://www.vwwatercooled.com.au/for...fa28435a-1.jpg
As you can see ones opened they are completely identical!
https://www.vwwatercooled.com.au/for...b288af7e-1.jpg
Audi valve
https://www.vwwatercooled.com.au/for...d21536a4-1.jpg
Mercedes valve
https://www.vwwatercooled.com.au/for...591c5b54-1.jpg
https://www.vwwatercooled.com.au/for...8095bc6a-1.jpg
Ones you strip off all the seals, cap and diaphragm you have a full Audi RS5 PCV valve rebuild kit for a fraction of the cost for a new one https://www.vwwatercooled.com.au/for...8bf6f154-1.jpg
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