The mounting holes are 9-1/4" inches apart (center of hole to center of hole)
220 Tractors
Two rockshaft pins are used per side
M61-6 Multi-Spindle
Case IH part number 621719R3
New Pinion - Upper Axle Oil Seal for IH Farmall A, B, BN, Super A, 100, 130, 140 Tractors, FREE SHIP The mounting holes are 9-1/4"New Differential Shaft Pinion Oil Seal for International and IH Farmall A, B, BN, Super A, 100, 130, and 140 Tractors. FREE SHIPPING!!! Pinion seal fits into the final drive housing behind the brake drum. Seal fits BOTH left and right side of the tractor. Replaces Case IH Oil Seal part numbers: 386455R91, 363511R91, 28733K, 269220R91, 20283D, 45011D, 381743R91, 20383D, 39884D, 386456R91, 383341R91, 276323, 250187R91, 288864R91, 288864R92, 288864R93,