The 4th opening is for the Air Stack Intake option
Eye Bolt with Square Nut for IH Farmall and McCormick Cub-189 or Cub-193 Moldboard Plows
Current Cole part numbers may vary from the casting numbers embossed on the actual part
Ford 3 and 4 bolt plow shares are interchangeable
The last picture shows how the riser mounts to the base of the fertilizer attachment
New Right Front Cultivator Mount for IH Farmall 140, 130, Super A, 100 Tractors, PO3100B, USA MADE!!! The 4th opening is forNew Right Front Cultivator Mount for International and IH Farmall 140, 130, Super A, and 100 Tractors. Replaces Case IH Front Cultivator Mount part numbers PO3100B. USA MADE!!!