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Description
The Positive Crankcase Ventilation (PCV) valve keeps crankcase gasses from building up inside your valve covers, while keeping foreign stuff out. This inexpensive part is important! A broken or clogged PCV can cause excess blow-by or blown seals from too much crankcase pressure.
Fits:
2015-2021 WRX
2014-2018 Forester XT
