The Standard Ignition V391 PCV Valve is engineered to optimize engine performance by regulating the flow of gases from the crankcase to the intake manifold. This valve plays a crucial role in maintaining optimal engine efficiency and reducing harmful emissions. Constructed with high-grade industrial plastic, the V391 PCV Valve offers exceptional resistance to oil and high engine operating temperatures, ensuring durability and longevity. The machined cut locating tab provides a precise fit, securing the valve firmly in place and preventing air leaks that could compromise engine performance. The Viton O-ring seals effectively across a wide temperature range, from -15°F to 400°F, offering superior oil resistance and maintaining a tight seal under various operating conditions. Designed for direct fitment, the V391 PCV Valve ensures easy installation without the need for modifications, reducing downtime and labor costs. Its OE-quality connectors and terminals guarantee a secure and reliable electrical connection, facilitating seamless integration with the engine's wiring harness. By incorporating the Standard Ignition V391 PCV Valve into your fleet's maintenance routine, you can expect enhanced engine performance, improved fuel efficiency, and a reduction in harmful emissions. This component addresses common issues associated with PCV valve failure, such as engine stuttering, stalling, and increased oil consumption, thereby contributing to the overall reliability and operational efficiency of your fleet.