Engine Cylinder Head for Early Model John Deere B, BN Tractor, B2501R Replaces Oliver Radiator Cap part

Replaces Oliver Radiator Cap part numbers:  1B507

Coulter Shank for International and McCormick Moldboard Plows

The total outside diameter is 4-5/8" inch

Some models have serial number breaks

Engine Cylinder Head for Early Model John Deere B, BN Tractor, B2501R Replaces Oliver Radiator Cap partEngine Cylinder Head for John Deere B, BN, BNH, BW, and BWH Tractors. Cylinder head will fit the above tractor models with serial number B60000 B95999 Will also fit John Deere BO and BR Tractors with Serial Number 329000 and after. Cylinder head has been visually inspected for cracks or welds. Engine head might need further machining, cleaning or inspection before use. John Deere Engine Cylinder Head part number B1306R. Please compare your engine head