7939 Ulmerton Road Largo, Florida 33771 

Email: [email protected] Phone (orders or questions): 800-250-8746 

International (orders or questions) 727-539-7634

Guaranteed Carburetors, a premier provider of automotive and marine carburetors, has a proud history dating back to 1976, when our journey began in a small shop in Old Bridge, New Jersey. Our founder, Bob Hartzell, worked alongside his father before opening his own location in Largo, Florida, in 1980. Through hard work, expertise, and a commitment to quality, Bob quickly established a reputation as a trusted carburetor rebuilder and specialist. Over the years, Bob built a highly skilled team dedicated to the craft. Today, we’re proud that many members of our team have worked together for over 30 years. That experience, knowledge, and dedication are at the heart of everything we do. We remain committed to serving our valued customers with the same exceptional quality, craftsmanship, and personal service that defined Guaranteed Carburetors from the very beginning—back in 1976, in that little shop in New Jersey.