Keep your diffs safe with these awesome 5mm alloy diff guards. These come as a pair, for the front and rear guards, and come with all the nuts and bolts to install.
This product will fit the JB74 (3 door Jimny) and the JC74 (5 door Jimny).
You'll just need a basic socket set or spanners to install. The diffs will leak oil as you're removing the bolts, so you'll need to move fast, and top up the oil afterwards.