Fits all BSA, Norton and Triumph models except 1979-81 Triumph T140/TR7 & Norton MK3 Commando.
OEM: 49345, LU49345
NB: It is recommended that these are not used if your bike has an Electronic Ignition System (Boyer, Pazon, Tri-Spark, etc.) installed as the pattern diodes let the whole bike overcharge to about 17.5V which is enough to "pop" electronic ignition kits.) You'd be better off going more modern and fitting one of the Single Phase or Three Phase Regulator Rectifiers that replace both the Rectifier and the Zener Diode.