See part 18 in the diagram

Gear Case Cover 5140003-78

Works with your model G720-B2!

$8.37

Works with your model G720-B2!

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This part works with the following brands:

This part works with the following products:

Part# 5140003-78 replaces these:

5140003-78,

This part works with the following models:

ERP Number: ERP10175972
Manufacturer Part Number: 5140003-78

Brand	Model Number	Description
Black and Decker	G720-AR	Grinder - 10241
Black and Decker	G720-B2	Grinder - 4-1/2 Small Angle Grinder
Black and Decker	G720-B3	Grinder - 4-1/2 Small Angle Grinder
Black and Decker	G720K-AR	Angle Grinder - 720w Sag Kit-Interco
Black and Decker	G720K-B2	Grinder - Small Angle Grinder
Black and Decker	G720K-B3	Angle Grinder - 720w Sag Kit-Interco
Black and Decker	GR750	Angle Grinder - 4-1/2 Angle Grinder
Black and Decker	GR750K	Grinder - 4-1/2 Angle Grinder