Rubber vacuum caps are used to plug unused vacuum fittings. Handy to have extra vacuum caps on hand.
Rubber Vacuum Cap Assortment Kit
5 caps of each of the following sizes: 1/8", 5/32", 7/32", 3/8", 1/2"
Save $5.80 by buying kit
Ethanol Compatible 3/8" Fuel Hose (by the foot)
Vacuum Hose 5/32", by the foot