2A150 Securing Cap Nut to hold in place the rocker cover and engine lifting bracket on BMC Leyland lightweight tractors.

See number 26 in the diagram.

Fitted to engines:

BMC 948cc 4 cylinder diesel and petrol
BMC 1500cc 4 cylinder diesel 
BMC 1622cc 4 cylinder petrol
BMC 1800cc 4 cylinder diesel
BMC 2.52 4 cylinder diesel
Thornycroft T90, T108, T154 marine engine

Fitted to tractors;

• BMC Mini
• Nuffield 4/25
• Leyland 154, 184, 235, 302
• Marshall 302