OEM Part No:126123, 604219, 607480OD: 4 7/8″ (124mm)Fits Big Dog models Alpha MP 42″ cut, Alpha MP 48″ cut, Alpha MP 54″ cut, Alpha 52″ cut, Blackjack 48″ cut, Blackjack 54″ cut, 932897EX, 932913EX, 933374EX, 932921EX, 932939EX, 932947EX, 935304EX, 935312EXFits Hustler models Dash 34″, Dash 42″, Raptor 36″, Raptor 42″, Raptor 52″, Raptor Flip-Up 48″, Raptor Flip-Up 54″, Raptor SD 36″, Raptor SD 42″, Raptor SD 48″, Raptor SDX 36″, Raptor SDX 42″, Raptor SDX 48″, 931899EX, 932277EX, 932541EX, 932558EX, 932566EX, 933382EX, 933465EX, 934679EX, 935262EX,935270EX, 935288EX, 935296EX, 936534EX, 936542EX, 936559EX, 938365EX, 938381EX, 938399EX, 938407EX, 938480, 938498, 939231, 939249, 939108EX, 939116EX