This is a A-SK269 Piston Liner Kit PN: SK269Main Description As Following : A-SK269 Piston Liner Kit P.N: SK269 STEPPED HEAD PISTON, .875" DIA PISTON PINOverbore 3-9/16" To 3-5/8"Includes: Piston, liner, & rings. Piston PA290 is not sold seperately. Crossed From: PK167 , Found in Section & Models : Engine Parts > C169 & C175 CID, Case-IH TRACTOR: 300, Case-IH TRACTOR: 350 Associated Items : New Also A-CA-O-300, A-CON-S-ZDGDETC, A-IH-C-MUSCLES, A-IH-O-ROTCUTFH, A-IH-P-HYDTCH, A-IH-S-CARBSPEC, A-IH-S-ENGGASE, A-IH-S-HMTRANFD, A-IH-S-TOOLSLATE, A-IH-S-TUNEUP, A-SMIH10, A-CA-P-350, A-CA-S-350, A-IH-C-MUSCLES, A-IH-O-350DSL, A-IH-O-350DUTIL, A-IH-O-350UTIL, A-IH-P-ACCESSORY, A-IH-P-300350, A-IH-P-350UTIL And : STEPPED HEAD PISTON, .875" DIA PISTON PIN Overbore 3-9/16" To 3-5/8" Includes: Piston, liner, & rings. Piston PA290 is not sold seperately.