Lots of cool, clean air has been shown to increase horsepower—and these cotton replacement air filters from S&B deliver both unrestricted flow and high filtration. The 8-layered cotton filters protect your engine from harmful dirt and debris, while the couplers and end caps are manufactured from premium silicone rubber to help prevent cracks. And because the filters are cleanable and reusable, they're a great performance value. S&B Filters elements are available in numerous styles and sizes for compatibility with nearly any engine bay.