These Rubber Vacuum Caps are great for blocking off unused vacuum ports and lines, to prevent leaks and poor engine performance. Excellent for capping lines and hoses while testing carburetors, emission control systems, vacuum lines and more.
Caps are made from durable heat-resistant black rubber. Assortment contains one each of the following sizes: 5/32", 7/32", 5/16", 3/8" and two each of 3/16" and 1/4".