This is a A-R43680 Insert, Intake Valve (Std) PN: R43680Main Description As Following : A-R43680 Insert, Intake Valve (Std) P.N: R43680 Inside Diameter: 1.684"Outside Diameter: 1.945"Size: STD Crossed From: AV104942 VAPORMATIC , HCNR43680 , Found in Section & Models : Engine Parts > Engine Related Parts, John Deere EXCAVATOR: 690B, John Deere INDUSTRIAL/CONSTRUCTION: 700, John Deere SPRAYER: 4930, John Deere TRACTOR: 40, John Deere TRACTOR: 400, Engine Parts > 2.9D Diesel, Power Tech Eng, John Deere INDUSTRIAL/CONSTRUCTION: ALL MODELS (2.9 LITER DIESEL ENG SN <252767, Engine Parts > 4.270 Diesel, 400 Series, John Deere BACKHOE: 500A, John Deere BACKHOE: 500B, John Deere INDUSTRIAL/CONSTRUCTION: 500 (SN <280000 Early Power Booster w/ 4.270, John Deere INDUSTRIAL/CONSTRUCTION: 500C (SN 280000> 4.270 4CYL ENG), John Deere INDUSTRIAL/CONSTRUCTION: 510 (SN 280000> 4.270 4CYL ENG), John Deere TRACTOR: 3010 (SN <280000 4.270 4Cyl Eng & Early Power Booster Eng), John Deere TRACTOR: 3020 (w/ 4.270 4Cyl Eng & Early Power Booster Eng), Engine Parts > 6.404D Diesel, 400 Series, John Deere COMBINE: 6600 (SN 422365> w/ 6.404D 6Cyl Eng), John Deere COMBINE: 7700 (SN 422365> w/ 6.404D 6Cyl Eng), John Deere INDUSTRIAL/CONSTRUCTION: ALL MODELS (6.404D, 6 CYL ENG W/ SN 335845>,, John Deere INDUSTRIAL/CONSTRUCTION: 600 (SN <335845 w/ 6.404D 6Cyl Eng), John Deere TRACTOR: ALL MODELS (SN <214999, 6.404D EARLY POWER BOOSTER, 6CYL ENG, John Deere TRACTOR: 4000 (SN <335845 6.404D 6Cyl Eng), John Deere TRACTOR: 4010 (SN <214999, 6.404D 6CYL ENG) Associated Items : New Also A-JD-O-OMH111330, A-JD-O-OMH120048, A-FRM-JD, A-JD-O-OMR32385, A-JD-P-PC736, A-JD-S-SM2038, A-SMJD203, A-FRM-JD, A-JD-O-OMR34406, A-JD-O-OMR41753, A-JD-O-OMR46012, A-JD-O-OMR48271, A-JD-P-PC1115, A-JD-P-PC858, A-JD-S-SM2038, A-JD-S-TM1005, A-SMJD203, A-FRM-JD, A-JD-O-OMT2455, A-JD-P-PC862 And : Inside Diameter: 1.684" Outside Diameter: 1.945" Size: STD