For Mercruiser Alpha One Gen II outdrives.
Length: 7-1/2″
Width: 3″
Threaded Holes: 1/4″-20.
EMP Aluminum anodes conform to Mil-Spec A-24779(SH)

also crosses with:
Canada Metals CM821629A
Performance Metals 00041A
GLM 12711
Technoseal 00814AL
Camp 815933
Reliance AMD-821629