The Heat Shrink Tubing helps to prevent damage caused by abrasion, moisture, and other types of environmental factors, which can ultimately extend the life of the automotive components and improve their performance.
Firewall Feed-thru 80106001 helps install
ignition coil in the passenger compartment and routes spark plug wire through
the firewall. The 1/2'' insulation ensures that the coil spark gets to the
distributor instead of jumping to ground at the firewall.