Tachometer "tractormeter" drive unit housing with gear.
Ford tractors: 2000 3-cylinder, , 2100, 2110, 2110LCG, 2120, 2150, 2300, 2310, 3000, 3000 US BUILT, 3055, 3100, 3110, 3120, 3150, 3300, 3310, 3330, 3400, 3400 US BUILT, 3500, 3500 US BUILT, 3550, 3550 US BUILT, 4000 3-cylinder, 4100, 4110, 4110LCG, 4140, 4200, 4330, 4340, 4400, 4400 US BUILT, 4410, 4500, 4500 US BUILT, 5000, 5000 US BUILT, 5100, 5200, 5340, 7000, 7100, 7200, 8000, 9000
OEM: 81812582, C5NF17B282R, C5NF17373B, C5NF17B282B