The McCormick 3427460M1 Piston Assembly is a genuine OEM component designed for optimal engine performance in McCormick CX series tractors, as well as a wide range of Massey Ferguson and Valtra/Valmet agricultural machinery. This high-quality piston features a 100mm bore, a 38mm pin diameter, and an overall length of 105mm, ensuring precise fitment and reliable operation. It is an essential part for engine repair and maintenance, cross-referenced with various Massey Ferguson and Valtra/Valmet OEM numbers.