Why take chances with a plug boot failure in the heat of competition? Use the ultimate spark plug boot insulator and protect your expensive plug lead stes with the latest in heat protection technology and design. Put these on your car and forget about ever replacing your plug boots from heat damage again. Capable of withstanding 982.22°C (1800°F) continuous.

1 piece straight - 304 stainless steel exterior

 106.25mm (41/2") length, 15.87mm (5/8") to 25mm (1") I.D. (both round)