The CF400 is a high-quality aftermarket air filter designed to provide excellent engine protection for a wide range of lawn and garden tractors, zero-turn mowers, and other small engine equipment. This filter effectively captures dust and debris, ensuring clean air intake for optimal engine performance and longevity. It serves as a direct replacement for several OEM part numbers, including Briggs & Stratton 491588S and John Deere M147489, offering a cost-effective alternative without compromising filtration quality. Key dimensions include an outer diameter of approximately 102 mm, an inner diameter of 51 mm, and a height of 127 mm.