Zinc plated brass. OEM 63578-52 reproduction fitting. Used in various applications. Amongst others Bendix carburetor fuel line inlet and crankcase air vent. 1/8 NPT threaded, for use with 5/16 hose.

Fits: > Bendix carb: 71-75 B.T.; 72-E76 XLH, XLCH Vent line oil tank: 54-84 FL, FLH; 71-84 FX; 57-80 XL Vent line crankcase: 71-84 FX; 41-84 FL, FLH; 80-84 FLT; 82-83 XR1000 Chain oiler: 54-84 FL; 71-84 FX