Elevate the performance of your 2014 Yamaha YZ450F with this genuine OEM Keihin Throttle Body, a direct replacement for the manufacturer part number 1SL-13750-00-00. Sourced from the trusted brand Yamaha, this throttle body is designed to ensure seamless integration and operation with your motorcycle's air intake and fuel delivery system. Crafted for precision and durability, the throttle body is a crucial component in maintaining the throttle response and idle control of your motorcycle. Whether you're looking to replace a worn-out part or upgrade for enhanced throttle feel, this stock Yamaha throttle body is an excellent choice for riders seeking reliability and original performance. Missing air fuel screw mixture screw. Refer to pictures.