This is a A-R90601 Valve, Exhaust (Std) PN: R90601Main Description As Following : A-R90601 Valve, Exhaust (Std) P.N: R90601 Size: STD Crossed From: HCNR-90601 , , HCNR90601 , Found in Section & Models : Engine Parts > Engine Related Parts, John Deere SCRAPERS: 862B, Engine Parts > 6.531A Diesel, 500 Series, John Deere TRACTOR: 6030 (w/ 6.531A 6Cyl Eng), John Deere TRACTOR: 7520 (w/ 6.531A 6Cyl Eng), Engine Parts > 6.531T Diesel, 500 Series, John Deere GRADER: 770A (6.531T 6CYL ENG), John Deere GRADER: 772A (6.531T 6CYL ENG), John Deere INDUSTRIAL/CONSTRUCTION: 644B (6.531T 6CYL ENG), John Deere INDUSTRIAL/CONSTRUCTION: 646B (6.531T 6CYL ENG), John Deere INDUSTRIAL/CONSTRUCTION: 770 (6.531T 6CYL ENG) Associated Items : New Also This is An Aftermarket Product And : Size: STD