Since 2000 dooxi Engineering has been designing, manufacturing, and enhancing premium replacement High-Flow Oil Filters for a wide variety of vehicle makes. Designed as a replacement for your disposable factory oil filter, dooxi oil filters drop into the vehicle's stock air box in a quick, simple installation. dooxi replacement oil filters are also an economical upgrade as they are designed to last up to 50,000 miles before cleaning is required depending on driving conditions. A dooxi oil filter will last the life of your vehicle and is backed with a 1,000,000 mile lifetime limited warranty.