This is a A-PR178 Piston Rings PN: PR178Main Description As Following : A-PR178 Rings, Piston P.N: PR178 If Needing Keystone Style Rings Use Part# A-3139594R91.w/ square type rings Replaces: VPB4805 VAPORMATIC , 3144452R92 CASE , 3218416R1 IH , 3218416R91 CASE , 3218416R92 CASE , 87556004 IH , Crossed From: PRS179D , , PRS239D , , PRS6310D , , 1709-1037 , Found in Section & Models : Engine Parts > D179 CID, Case-IH TRACTOR: 454, Case-IH TRACTOR: 464, Case-IH TRACTOR: 484, Engine Parts > D239 CID, Case-IH INDUSTRIAL/CONSTRUCTION: 2544, Case-IH TRACTOR: 544, Case-IH TRACTOR: 574, Case-IH TRACTOR: 664, Case-IH TRACTOR: 674, Case-IH TRACTOR: 684, Case-IH TRACTOR: 685, Case-IH TRACTOR: 724, Case-IH TRACTOR: 824, Engine Parts > D358 CID, Case-IH INDUSTRIAL/CONSTRUCTION: 2826, Case-IH TRACTOR: 3088 (SN <121247), Case-IH TRACTOR: 3288 (SN <111090), Case-IH TRACTOR: 786, Case-IH TRACTOR: 826, Case-IH TRACTOR: 886 (CHASSIS SN 14472>) Associated Items : New Also A-IH-O-3121, A-IH-P-ENG-4DSL, A-IH-P-ENG14CYL, A-IH-S-544UTIL, A-IH-P-8262826, A-IH-S-ENGD155, A-IH-O-3088, A-IH-P-ENG56CYL, A-IH-P-3088, A-IH-S-ENGD155, A-IH-S-3088, A-IH-O-BATTIGN, A-IH-O-3088, A-IH-P-ENG56CYL, A-IH-P-3088, A-IH-S-ENGD155, A-IH-S-TUNELATE, A-IH-S-3088, A-IH-O-454EARLY, A-IH-O-454GD And : If Needing Keystone Style Rings Use Part# A-3139594R91. w/ square type rings