Perfect Compatibility: This BR-67255 Carburetor is designed to fit Holley Quick Fuel Brawler 650 CFM models with mechanical secondary throttle and electric choke, ensuring easy installation and optimal performance for your vehicle. High Performance Specifications: Made from high-quality die-cast aluminum, this carburetor provides a robust structure that is resistant to deformation, high temperatures, and pressures, ensuring long-lasting durability and reliable performance. Enhanced Throttle Response: The mechanical secondary design ensures a stronger throttle response, making this carburetor ideal for both high-performance applications and street use, delivering the power you need on demand. User-Friendly Features: Equipped with dual inlet fuel bowls featuring sight glass windows for safe and easy float adjustments, along with an electric choke for seamless starting in colder climates, enhancing your driving experience. Versatile Replacement Options: This carburetor features a square bore flange bolt pattern, allowing it to replace various carburetors like Holley, Edelbrock, Carter AFB, and Autolite styles. An adapter may be required for spreadbore intake manifolds. Dasbecan BR-67255 Carburetor 4150 Model 650 CFM 4 Barrel Compatible with Holley Quick Fuel Brawler Diecast Carburetors, Mechanical Secondaries & Electric Choke