with o-ring

38135-50 locknut

5/16" hole

This key switch fits into a 3/4" diameter hole with two flats

tackles a genre

Ignition Sensor Assembly - 1980-1994 Harley-Davidson XL 1984-1985 FXST 1980-1993 FLT Length_.736" with o-ringThis replacement ignition sensor assembly includes the pickup, mounting plate, and wires with connectors. Assemblies include pickup, mounting plate and wires with connectors Replaces Harley Davidson OEM# 3240080A Fits 1980 1994 Harley Davidson XL 1984 1985 FXST and 1980 1993 FLT Note: There are no returns on carburetors, electrical items, full frames, hardtails or made to order items (such as magnetos) unless there is a manufacturers defect.