The McCormick 6524753M1 is a genuine OEM piston compression ring, precisely engineered for a bore diameter of 91.44 mm. This critical engine component ensures optimal cylinder sealing, maintaining proper compression for efficient engine operation and power delivery. It is widely compatible with various McCormick C, CX, MC, MTX, and XTX series tractors, as well as an extensive range of Massey Ferguson and Landini agricultural machinery models.