For 4.5/7.5 HP 1979-1984 I 4, 6, 8 HP (1984 & Later)
Length: 8-7/8″
Width: 2″
Thickness: 1/2″
Mounting Holes: 1/4″ diameter; 8″ center-to-center.
EMP Aluminum anodes conform to Mil-Spec A-24779(SH)

also crosses with:
Canada Metals CM334451A
GLM 12761
Technoseal 00913