This is a A-505085M1 Bulb, Sealed Beam (12 Volt) PN: 505085M1Main Description As Following : A-505085M1 Bulb, Sealed Beam (12 Volt) P.N: 505085M1 Dim A (1): 5 7/8" Dia.Dim B (2): 3 Prong TerminalDim C (3): (4459 Trapezoidal) Stocked As: A-28A120 Found in Section & Models : Lights & Related Parts > Sealed Beams, Massey Ferguson TRACTOR: 135 (hood mounted), Massey Ferguson TRACTOR: 150 (hood mounted), Massey Ferguson TRACTOR: 165 (hood mounted), Massey Ferguson TRACTOR: 175 (hood mounted) Associated Items : A-1026697M1 Also A-FRM-MH, A-MH-O-HYDRSYST, A-MH-O-MF135, A-MH-O-MF1353CL, A-MH-P-MF135, A-MH-P-MF32LDR, A-MH-S-MF100LDR, A-MH-S-MF135150, A-SMMF27, A-FRM-MH, A-MH-O-HYDRSYST, A-MH-O-MF150, A-MH-P-MF150, A-MH-P-MF32LDR, A-MH-S-MF100LDR, A-MH-S-MF135150, A-SMMF27, A-FRM-MH, A-MH-O-HYDRSYST, A-MH-O-MF165 And : Dim A (1): 5 7/8" Dia. Dim B (2): 3 Prong Terminal Dim C (3): (4459 Trapezoidal)