For #2 cam. Outer diameter 1.3775". Used in the cam cover. Tech tip: Cam cover bushings are counted from rear to front of the engine. #1 = rear exhaust, #2 = rear intake, #3 = front intake, #4 = front exhaust. / Fitment: 57-90 XL Sportster; L59-73 45" (750cc) Flathead: #2 cam