This is a A-74009848 Pulley, Crankshaft Dampener PN: 74009848Main Description As Following : A-74009848 Pulley, Crankshaft Dampener P.N: 74009848 Replaces: 74007157 Crossed From: 74007157 ALLIS-CHALMERS Found in Section & Models : Engine Parts > Crankshafts, Allis-Chalmers TRACTOR: 7000, Allis-Chalmers TRACTOR: 7010, Allis-Chalmers TRACTOR: 7020, Allis-Chalmers TRACTOR: 8010 Associated Items : New Also A-AC-O-7000DSL, A-AC-O-7000ERLY, A-AC-P-7000, A-AC-P-7000ERLY, A-AC-S-7000DSL, A-FRM-ACCACO, A-SMAC202, A-AC-O-7010D, A-AC-P-7010, A-AC-S-7010, A-FRM-ACCACO, A-SMAC202, A-AC-O-7020, A-AC-P-649-I, A-AC-P-7020, A-AC-S-7010, A-FRM-ACCACO, A-SMAC202, A-AC-O-80108030, A-AC-P-8010 And : Replaces: 74007157