For DT150 1986-2003, DT175 1987-1992, DT200 1986-2000, DT225 1990-2003
Diameter: 3-1/2″
Mounting Hole: M10 x 1.25mm threads
EMP Aluminum anodes conform to Mil-Spec A-24779(SH)

also crosses with:
Sierra: 18-6033
Canada Metals CM5512087801A
GLM 12849
Technoseal 01211AL
Camp 55125-87D00
Reliance AMD55125-87D00