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The valve cover oil deflector with crankcase ventilation and oil trap on your Volvo allows crankcase gases to vent into the intake system, and deflects oil down in the cylinder head to help lubricate the cams and valve train. It then traps oil sludge keeping it out of the engine and intake system. When the oil trap inside of the valve cover oil deflector becomes clogged, crankcase pressure builds inside the engine, causing oil leaks from the valve cover and oil dipstick tube. To prevent this from happening, Volvo recommends replacing the valve cover defector every 100,000 miles as routine maintenance. This genuine Volvo 31319642 valve cover oil deflector is the recommended replacement valve cover deflector for your 2012-2015 XC60, 2008-2015 XC70, and 2008-2014 XC90 3.2L models and the same part sold at your local Volvo service center. Using genuine Volvo parts to service and repair your vehicle will ensure the longest life possible from your Volvo, keeping it on the road and out of the repair shop.