CDI Electronics 531-0119M2 - M.E.D.S. Mercury Including G3 Upgrade ronstan series 60 core block - single fiddle cleat Overall Diameter: 18

Overall Diameter: 18

With Acetal polymer sheaves this single block with swivel and becket is available in 2 sizes

This is a normally closed switch which will apply ground to kill a magneto when the cap is pulled

Removable headliner & cheek pads for cleaning or resizing

CDI Electronics 531-0119M2 - M.E.D.S. Mercury Including G3 Upgrade ronstan series 60 core block - single fiddle cleat Overall Diameter: 18CDI M. E. D. S. Individual Platform Diagnostics System Add On Upgrade For Mercury Including G3 Part Number: 531 0119M2 This kit is an add on upgrade. Only to be purchased if you already own a bundle or individual platform. M. E. D. S. Is an easy to use, yet sophisticated software program specifically designed for troubleshooting multiple marine engines. Using M. E. D. S. you can easily collect engine data, determine active faults, run engine tests &