The McCormick 3690237M2 piston is a genuine OEM replacement part designed for a wide range of Massey Ferguson and McCormick agricultural machinery. Featuring a 98.43mm bore diameter, an overall height of 104.7mm, and a 35mm diameter piston pin with a length of 75mm. This piston is engineered with 3 ring grooves, ensuring optimal engine compression and performance. It is a critical component for engine overhaul and maintenance, compatible with numerous tractor models including the Massey Ferguson 1000, 200, 3000, 3100, 3600, 500, 600, 8100, 8200 series, and McCormick CX, MC, MTX, X, XTX series.