This is a A-SK412 Piston Liner Kit PN: SK412Main Description As Following : A-SK412 Piston Liner Kit P.N: SK412 Compression height is 3.3995; Ctr of wrist pin to top of piston is 3.1820 Replaces: G-899H MISCELLANEOUS , Crossed From: PK-DT466 , , 141192 , Found in Section & Models : Engine Parts > DT466 & DTI466 CID, Case-IH COMBINE: 1640 (w/ D466 Engine), Case-IH TRACTOR: 4366, Case-IH TRACTOR: 4386 (ENG SN <74999) Associated Items : New Also A-IH-S-1660COMB, A-IH-O-4366, A-IH-P-ENG56CYL, A-IH-P-4366, A-IH-S-ENG3400, A-IH-S-4366, A-IH-O-4386, A-IH-P-ENG56CYL, A-IH-P-4366, A-IH-S-ENG3400, A-IH-S-4366 And : Compression height is 3.3995; Ctr of wrist pin to top of piston is 3.1820