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HOW TO: Replacing the PCV Valve (and PCV Hose) on a Gen 1 Subaru Ascent

5.2K views 1 reply 2 participants last post by  jonsstihl  
#1 ·
Here's how I changed my PCV valve hose, and my PCV valve. And, remember, I am not your Subaru Technician - always discuss any suggestions, videos, tips, etc (mine or others) with YOUR authorized Subaru service technician. Follow what I did at your own risk.



ALWAYS double check part numbers for the most recent part numbers. These part numbers are accurate as of 8/2/2023

For those doing it themselves, you will need:

  • HOSE ASSEMBLY-PCV 11815AC88D
The new clamps are included with the new PCV hose assembly.

You will also need these for the intercooler.
  • GASKET-INTER COOLER 21896AA130
  • GASKET-AIR INT DUCT 14497AA080

AND YOU WILL OF COURSE NEED THE PCV VALVE:
  • 11810AA210 - PCV Valve and both o-rings