What is this and do I need it??

Here is what I found awhile back on my car. The long bolts that attach the weight to the transmission go through rubber grommets. My grommets were bad, probably eaten up by tranny fluid over the years. The grommets are unavailable from the dealer, but, you can buy the whole weight with bolts and grommets for about $100. I found that tractor trailer air line hose is the perfect size - correct inside and outside diameter, plus, it is pretty resistant to oil. You need about 1 1/2 inches of it. I was able to get a small piece for nothing from a local shop.
C