The 28Q777 OHV Briggs & Stratton Head with Valves & Rods is a gas-powered engine designed for lawn mowers and outdoor power equipment. With a power output of 15.5hp, this engine is reliable and efficient for maintaining gardens and yards. Manufactured by Briggs & Stratton, known for their durability and quality, this engine comes with a 1-year manufacturer warranty for added peace of mind. Perfect for those in need of a replacement engine or looking to upgrade their current lawn mower, this Vanguard engine is a solid choice for any outdoor power equipment needs.