Vacuum Secondary Housing Vacuum Secondary Housing; Quick Adjust; Incl. Adjustment Screw To Change Opening Rate Of Secondary; Cast Polished Cover; SPECIFICATIONS: Color: Shiny Material: Aluminum FEATURES: Vacuum Secondary Housing Adjustable Vacuum Secondary Housing - Polished Die Cast - Allows user to tune rate of secondary throttle opening by simply turning a screw. Comes with replacement cork seal. "Innovators in fuel systems" is more than just a by-line. Quick Fuel Technology, since its inception in 1998, has grown exponentially in its 11 years of business culminating into the benchmark by which performance carburetors are measured. The growth and success of Quick Fuel Technology is attributed to the strength and determination of its staff. All of the innovations you see are the product of a team that is both experienced and involved in motorsports. We continue to develop new products so that we can stay on the forefront of innovation. Over the years, Quick Fuel Technology has made considerable strides to become a stand-alone carburetor manufacturer. This increase in efficiency and capability has allowed us to continuously upgrade our products while keeping the prices low. Keeping true to our motto, we look to the future and constantly seek the next innovation. With our past experience and race-track development we continue our pursuit of horsepower and efficiency. Looking through this website will give you insight into our company's capabilities. We strive to provide a comprehensive line of carburetors, carburetor accessories, as well as service parts. Should you have a specific application that is not covered on this website, give us a call, we would be glad to talk to you about it. Whether you are looking for a recommendation or in need of technical service, we are simply a phone call away.