Volvo Cars 31316184 Valve Cover PCV Oil Trap Rocker Cover

Volvo Cars 31316184 Valve Cover PCV Oil Trap Rocker Cover is a rocker cover assembly that integrates the PCV oil trap to manage crankcase ventilation for Volvo engines. Part number 31316184 is specified for Volvo S60, S90, XC40, XC60, XC90, and V60 models. This valve cover forms the engine’s top-sealing component for the cylinder head and directs blow-by vapors into the PCV system, where oil is separated and vapors are recycled to the intake. The built-in oil trap helps reduce oil carryover into the intake path and minimizes oil mist in the intake tract, supporting cleaner combustion and longer-term engine cleanliness. When selecting this part, verify the fitment against your vehicle’s model year and engine configuration to ensure compatibility with the listed Volvo platforms.