The Standard Ignition V273~SI PCV Valve is engineered to maintain optimal engine performance by regulating the flow of gases from the crankcase to the intake manifold. This valve is compatible with various Nissan and Subaru models, including the 1986-1989 Nissan D21 and the 1990-2002 Subaru models such as the Loyale, Impreza, Legacy, Outback, and Forester. Constructed from durable metal, the V273~SI features a 5/8" hose connector, a 0.24" inlet diameter, and a 0.27" outlet diameter, ensuring a secure and leak-free installation. The straight nipple orientation and M14 x 1.50 thread size facilitate easy attachment to the engine components. Designed for a screw-in attachment method, this PCV valve does not include a cap or gasket, which may be required separately depending on the specific application. By effectively managing crankcase emissions, the V273~SI PCV Valve helps in reducing engine sludge buildup, thereby extending engine life and maintaining fuel efficiency. Its robust construction and precise engineering make it a reliable choice for fleet maintenance, ensuring consistent performance across a range of vehicles.