Brake Disc. #30-3135241. Replaces 72514391.

8" OD, 21 spline. 

Fits:

Oliver 1750, 1755, 1800, 1850, 1855, 1900, 1950, 1950T, 1955, 2050, 2150, 2255.

White 2-85, 2-88, 2-105, 2-110, 2-150, 4-150, 4-175, 4-180.

M-M G955, G1355.