OE Number:4935079/4935078/3964093/5093067AA/3957926/3957987Fitment: for Ram 2500 2003 2004 2005 for Ram 3500 2003 2004 2005 for Cummins ISL 8.9L QSC ISC 8.3L Specifications: Color: Black Material: Plastic, Metal Function: To fix oil consumption problem. To avoids icing at the throttle, insufficient combustion, worsening emissions. To prevent blow-by gas from entering the atmosphere. To protect pcv valve to avoid the exhaust gas unable to be discharged in crankcase. To prevent the oil leakage and contaminate engine oil due to the seal gasket. Features: The valve cover breather crankcase design optimizes the engine ventilation system, which effectively discharges the pressure in the crankcase and prevents sludge accumulation, keeping the vehicle in the best operating condition. Durable plastic material with precise size, solid enough to wear resistance, anti-corrosion, prolong its service life. Built in Valve to meet old performance. Come with O Ring Seal to stay firmly to prevent oil leakage. This is a non-OEM product, accessory only! Package Include: 1 pc Valve Cover Breather Crankcase 2 pcs Rubber Connectors 2 pcs Clips