S&S, Harley Davidson Oil Line Fitting, Straight. Zinc. FL, FXST, XL, BT BC43946

Oil line nipple 1/8-27 NPT threaded to 3/8" (9.5mm) inside diameter oil hose. Used on oil pumps, oil tanks etc.
OEM replacement reference 63533-41

Fits 
primary vent: 66-84 FL; 71-E84 FX (Excl. FXS, FXSB); E1984 FXST. 
oil pump rear: 68-91 Big Twin (Excl. TC). 
Oil fitting feed: 67-76 XL Sportster. 
oil pump, rear: 91-22 XL Sportster (Excl. XR1200). 
crankcase vent: 04-22 XL Sportster; 08-12 (NU) XR1200.