Volvo S60 PCV Breather System Replacement - Prevent Smog! (C70, S60, S80, V70, XC70, XC90)

►A PCV (positive crankcase ventilation) breather system is been designed to regulate hazardous waste from your vehicle. As your engine runs, combustion gases escape from the combustion chamber, finding their way into the crankcase of your engine. This unused combustion gas, also referred to as "blow-by," can be a major cause of smog. A PCV system prevents pollutants from escaping into the environment and vehicle manufacturers started fitting engines with a PCV valve to ensure that gas remains contained within your vehicle.

*Be sure to re-attach the banjo bolt before mounting the manifold.*

For more information on the PCV system and why it's so integral to the proper functioning of your engine, click the blog link below for an in-depth writeup on Volvo's PCV system.

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