This is a A-522820R23 Limiter, Lateral Sway PN: 522820R23Main Description As Following : A-522820R23 Limiter, Lateral Sway P.N: 522820R23 Replaces: 522820R11, 522820R22 Replaces: 522820R11 IH , 522820R22 IH , Crossed From: AM522820R23 , Found in Section & Models : Hitch & Drawbar Parts > Stabilizer and Sway Block Parts, Case-IH TRACTOR: 400 FARMALL (W/FAST HITCH), Case-IH TRACTOR: 450 (W/FAST HITCH), Case-IH TRACTOR: 560 (W/FAST HITCH), Case-IH TRACTOR: 660 (W/FAST HITCH) Associated Items : New Also A-FRM-IHOL, A-IH-C-MUSCLES, A-IH-O-ELECTRALL, A-IH-O-ROTCUTFH, A-IH-O-400, A-IH-O-400DSL, A-IH-P-ACCESSORY, A-IH-P-HYDTCH, A-IH-P-IMP300, A-IH-P-400, A-IH-P-450, A-IH-S-CARBSPEC, A-IH-S-ELECDIA, A-IH-S-HMTRANFD, A-IH-S-TUNEUP, A-IH-S-400, A-MAG-S-317, A-SMIH10, A-IH-C-MUSCLES, A-IH-O-ROTCUTFH And : Replaces: 522820R11, 522820R22