425 MFG Aftermarket: Fits Sandvik DI550 / Tamrock Parts Replaces OEM P/N: 55178672 425 P/N 3596 Replaces OEM P/N: BG00338144 Friction Disk - Jaw Plate 425 P/N 3542 55034796 Coupling 623 924 18 Jaw - 62392418 Jaw T51 Extension RodCentralizer Clamp2"