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Review on πŸ”§ Dorman 917-147 PCV Valve Diaphragm: The Perfect Fit for Volvo Models by Jeff Hill

Revainrating 5 out of 5

Just tear off the old one and install this one.

Cheaper and easier than buying a whole oil separator. My 2008 volvo xc70 made a loud whistling noise that stopped when I pulled out the dipstick. This part will (probably) fix it.

Pros
  • Great design
Cons
  • Fine