Raceworks AN-10 ORB Flex Sensor Flow Bypass Fitting - Suits ALY-151BK and FSA-023New from Raceworks is a clever Flex Sensor bypsass fitting. This allows an Ethanol sensor to be integrated into the high pressure fuel feed hose before the engine without impeding fuel flow. Fuel enters via one side of the fitting via an AN 10 ORB fitting and then diverts some of the fuel through the Flex sensor but allowing the majority of the fuel to continue through without a drop in pressure. The two channels meet and exit via another AN 10 ORB