The McCormick 3555126M1 spring is a genuine OEM component designed for various McCormick C, CX, MC, and MTX series tractors. This essential spring measures 100 mm in length with a 20 mm outer diameter and a 2.5 mm wire diameter, weighing approximately 0.12 kg. It ensures proper function within the machine's system, providing durability and precise fitment. This part is also recognized as an OEM equivalent for Massey Ferguson under the same part number.