St. #6 > 1/2 Npt Adpt.

The EARLS St. #6 to 1/2 NPT Adapter (part number 981668ERL) is a straight-port hose fitting designed to connect two industry-standard thread sizes commonly used in fuel, coolant, and brake system applications. This adapter is essential for modern performance builds and system retrofits that require connecting components with mismatched port configurations.

Featuring a SAE #6 hose port on one end and a 1/2 NPT port on the other, this adapter allows for seamless integration of SAE-coded hose assemblies with standard NPT-threaded engine block ports or fuel system components. The straight configuration maximizes flow efficiency and minimizes turbulence, which is critical in high-pressure fuel and coolant circuits.

Engine builders, turbo installers, and transmission cooler retrofitters will find this adapter particularly beneficial when upgrading OEM systems or mixing braided hose assemblies with factory-cast iron or aluminum block ports. Its reliable design ensures compatibility and performance in demanding applications.