Light alloy crankcase gland nut. Comprises parts as shown. Replacement for Ducati original #0755.49.013 as fitted to late model electronic ignition widecase singles.

Replaces the original brass screw and washer seal which weighs 85 grams,new item weighs just 40 grams.
28mm hex spanner size 
Ducati seal and plastic closer are utilised
Seal is available separately for future/ repeated use
Will take the Ducati original rubber cap (#0609.46.060) for a tidy and original appearance
Ideal for use on 2 or 3 wire replacement alternator kits, as grommet seal compresses down to 2mm diameter