If your PTO shaft has a groove this clip is needed.
If you have mower deck 3260, with one long belt looping around all spindles, this is the belt you need.
This is a new replacement PTO Shaft for Farmall A, Super A, C, Super C, 100, 200, 140, 130. Spine end is 1-3/8th" in diameter. The keyed end is 1-1/8th" in diameter.
Adapts an Farmall 1-1/8 inch PTO shaft to a 1-3/8 shaft. Using this adapter you can have your old Farmall run a new mower, auger, seeder, sprayer, or other implement.
The adapter comes with a roll pin to attach it to the pto shaft, and is machined for use with quick release implements.
This fits in the PTO on a 154 Lo-Boy