Product Details: Prepare your semi truck to be Ready for the Road Ahead™, with the Baldwin CV15003 Crankcase Breather Filter Element that provides a safe way to vent engine gases. To prevent a buildup of unwanted pressure, this replacement device filters harmful gases before releasing them into the atmosphere. Fashioned with top-tier materials to be resistant to both heat and oil. FleetPride is your First Click in Heavy Duty®.