10350 IAME KA 100 Cylinder Head Nut, Short. This nut holds the Cylinder Head assembly of the IAME KA 100 engine in place - with a 13mm sizing, M8 x 1.25 thread. (2) of these nuts are required for securing the cylinder head atop the engine, along with (2) longer nuts that are cross-drilled for the rear of the engine.
Typically, these nuts are placed on the 'front' of the engine, closer to the front of the kart when oriented correctly.
Each nut is sold individually.