MSD heat shield will give you some extra insurance against heat on your plug wires. It is made from glass woven core that can with stand up to 1,000 degrees temperature. Inside there is a silicone rubber coating that adds protection against abrasion or tearing of the shield.
To install the shield simply slide over the spark plug wire.
Sold twenty five foot to a box and shield has a .375" inner diameter to slide over most all spark plug wires.
Note: This is a used item. This item might have been taken in on a trade. RBS may have inspected this item and deemed re-usable. There is no warranty expressed or implied with this item.