Looking for a piece for 74 dodge

So had some. Issues with my transmission but luckily was under warranty from the shop that had rebuilt it. The mechanic there told me I’d need a shifter linkage bushing very soon. He said there was a green one on it currently but that it wasn’t the correct one and it was falling apart. He told me I didn’t need the green one but I needed a clear one??? Any idea what this might be?