Enhance your motorcycle’s performance with this high-quality Carb Accelerator Pump Diaphragm, designed as a reliable replacement part to improve carburetor acceleration efficiency and ensure optimal engine operation. Crafted from premium metal material, this accelerator pump repair kit offers excellent strength, wear resistance, and durability while being resistant to gasoline, ethanol, and methanol for long-lasting use. Key Features: · Precise OE Compatibility: Matches OE numbers 16021-393-004, 16021-393-014, and 16021 MC9 771, ensuring a perfect fit and seamless integration with your carburetor system. · Wide Fitment Range: Compatible with multiple motorcycle models including XL250R (1982-1983), CB450SC Nighthawk (1983, 1985-1986), CM450E (1983), XL500R (1982), CB650 (1979-1982)*, CB650C (1980-1981)*, CB750A Hondamatic (1976-1978), CB750F Super Sport (1977-1978), and CB750K (1977-1978). (*Check rod length before ordering for CB650 and CB650C models.) · Improved Acceleration Efficiency: The accelerator pump valve membrane enhances carburetor responsiveness, promoting smoother throttle response and better engine performance. · Complete Repair Kit: Includes all necessary components such as spring, O-ring gasket, rubber tube, and accelerator valve membrane to facilitate easy installation and restore carburetor functionality. · Durable Metal Construction: Manufactured from premium metal material that withstands wear and exposure to various fuels, ensuring longevity and reliable operation under demanding conditions. Specifications: · Item Type: Carb Accelerator Pump Diaphragm · OE Numbers: 16021-393-004, 16021-393-014, 16021 MC9 771 · Material: Metal Package Includes: · 1 x Carb Accelerator Pump Diaphragm Repair Kit (with spring, O-ring gasket, rubber tube, and accelerator valve membrane) This Carb Accelerator Pump Diaphragm repair kit is an essential replacement part designed to maintain and enhance your motorcycle’s carburetor performance. Its robust construction and comprehensive accessory set make it a practical choice for riders seeking to improve engine efficiency and throttle response across a variety of compatible models.