Model compatible with standard 3/8 inch NPT threaded intake manifold systems secure and leak-free connections zinc-plated construction resists corrosion and extends service life in engine environments T-fitting design allows simultaneous connection of multiple vacuum lines for sensors, gauges or emission control components Ideal for automotive function setups, restoration projects and routine engine maintenance applications Compact and fitting suited for use in carbureted and fuel-injected internal combustion engines, Manufacturer: VPNHzkkmW