The Purolator L21406 Engine Oil Filter is engineered to provide premium engine protection for a wide range of vehicles. Designed with a rugged construction, this filter effectively traps contaminants, ensuring optimal engine performance and longevity. Its spin-on design allows for easy installation and maintenance, making it a reliable choice for fleet operations seeking efficiency and reliability. The filter's dimensions are 3.402" in height and 2.685" in outer diameter, fitting a variety of vehicles. The media material is synthetic, offering enhanced filtration capabilities. The filter features an anti-drain back valve to prevent dry starts and a bypass relief valve setting between 8-11 PSI to protect the engine during cold starts or high-viscosity conditions. The filter is classified as Class A and is suitable for light-duty applications. With a flow rate of 9-11 GPM, it ensures adequate oil circulation for engine components. The filter's burst pressure is 363 PSI, indicating its durability under high-pressure conditions. The thread size is 20x1.5 mm, compatible with various vehicle models. The filter is compatible with several other part numbers, including ACDelco PF1222, PF2057, and PF2112, among others. This compatibility ensures that the filter can be used as a replacement for various OEM filters, providing flexibility in maintenance operations. By incorporating the Purolator L21406 Engine Oil Filter into your fleet's maintenance routine, you can enhance engine protection, reduce downtime, and improve overall operational efficiency.