This is a A-194046M91 Fan, 4 Blade PN: 194046M91Main Description As Following : A-194046M91 Fan, 4 Blade P.N: 194046M91 New 4 blade fan has a 15.5" diameter, 1.6" pilot hole, and mounting holes on 2.5" center.The part number for a 4 blade 15", 1" pilot - 544348M91 (Currently not offered by A&I).The part number for a 6 blade 15.5", 1" pilot - 181527M91 (Currently not offered by A&I) .Dim A (1): Pilot is 1.6125"Dim B (2): Bolt Circle is 2.5"Dim C (3): OD is 15.5"Replaces: 521031M91 Replaces: 194046M1 MASSEY FERGUSON , Crossed From: 521031M91 MASSEY FERGUSON Found in Section & Models : Cooling Systems > Fan Blades, Massey Ferguson INDUSTRIAL/CONSTRUCTION: 203 (W/ DIRECT INJ. DIESEL), Massey Ferguson INDUSTRIAL/CONSTRUCTION: 205 (W/ DIRECT INJ. DIESEL), Massey Ferguson INDUSTRIAL/CONSTRUCTION: 2135 (W/ DIESEL ENGINE), Massey Ferguson INDUSTRIAL/CONSTRUCTION: 2200 (W/ PERKINS GAS OR DIESEL ENGINE), Massey Ferguson INDUSTRIAL/CONSTRUCTION: 3165 (W/ CONTINENTAL GAS OR DIESEL ENGI, Massey Ferguson SKIDDER: 40, Massey Ferguson TRACTOR: 135 (W/ PERKINS GAS OR DIESEL ENGINE), Massey Ferguson TRACTOR: 150 (W/ PERKINS GAS ENGINE), Massey Ferguson TRACTOR: 165 (W/ CONTINENTAL GAS OR DIESEL ENGINE), Massey Ferguson TRACTOR: 20, Massey Ferguson TRACTOR: 230 (W/ DIESEL <9A349239), Massey Ferguson TRACTOR: 235 (W/ DIESEL ENGINE), Massey Ferguson TRACTOR: 245 (W/ DIESEL ENGINE), Massey Ferguson TRACTOR: 2500, Massey Ferguson TRACTOR: 255 (W/ AD4-203 DIESEL ENGINE) Associated Items : New Also A-MH-O-MF203205, A-MH-P-MF20234, A-MH-S-MF100LDR, A-MH-S-MF203205, A-MH-O-MF203205, A-MH-P-MF20234, A-MH-S-MF100LDR, A-MH-S-MF203205, A-MH-O-HYDRSYST, A-MH-O-MF2135, A-MH-P-MF2135, A-MH-P-MF32LDR, A-MH-S-MF100LDR, A-MH-S-MF2135I, A-MH-O-MF2200, A-MH-O-MF2200FLE, A-MH-O-MF2200FLL, A-MH-P-MF32LDR, A-MH-O-HYDRSYST, A-MH-O-MF3165 And : New 15.5", 4 blade fan has a 1.6" pilot hole, and mounting holes on 2.5" center. The part number for a 4 blade 15", 1" pilot - 544348M91 (Currently not offered by A&I). The part number for a 6 blade 15.5", 1" pilot - 181527M91 (Currently not offered by A&I) . Diameter: 15.5" Mounting Holes: 2.5" centers Pilot Hole: 1.6125" Replaces: 521031M91