Additional pipe plugs are available to terminate the third port if not used.
The transducer mount (SA-MANIFOLD) attaches to the firewall and provides a mount for individual fuel and oil pressure systems. Each section has three ports, one for the flex hose, one for the transducer and one for a second transducer/switch. Flex hoses will go between the engine and the manifold. Transducers are typically not mounted on the engine due to possible failure because of vibration.
Note: The aluminum mount “SA-MANIFOLD” comes with 3 plugs. This listing is for additional plugs if needed.