Holy hell those things are expensive!!! I don't get it?! You can find something like that for 1/10 or 1/100 of the price.

They say the large one maintains crankcase vacuum when there is boost? This also doesn't make any sense.

 

For those looking for check valve but dont want to pay for the insanely high price of the Krankvent look here.

APS part number 000-990-300 VALVE - ONE WAY - PCV
http://www.airpowersystems.com/guide...-tts07/bom.htm

OEM Nissan brake booster check valves off a Z32
$20 from courtesy parts =

http://www.courtesyparts.com/kb_sear...utton=Go&cat=1

1. [47478] VALVE ASSY-CHECK - Product SKU: 47478-Z32001
2. [27461M] VALVE-CHECK - Product SKU: 28628-Z32001


OR:

http://www.partsgeek.com/gbparts/199...ek+Google+Base

 

why would i pay $20 when i can pay $2?