Prime Guard Cartridge Oil Filters deliver proven engine protection for demanding conditions. Our high-efficiency cellulose or blended media provides 95% filtration at 30 microns, keeping engines cleaner and performing at their best. Precision-engineered O-rings ensure a tight, leak-free seal, while every filter is USCAR-36 tested for consistent fit and reliability across applications. The advanced media is designed for maximum efficiency and contaminant-holding capacity. Prime Guard filters keep all new-car warranties intact and are backed by a warranty against defects in materials, design, and workmanshippremium protection you can trust.