Proflow Spark Plug Boot Heat Shields, 640°C, Black, 1-1/4 in. i.d., 8 in Length, Set of 8

Proflow's Spark plug boot protector is made from a high temperature resistant glass fiber material and treated with a proprietary coating. Double-wall construction for added durability. This heat shield prevents misfires caused by plug-wire burnout, helping prevent critical engine damage and performance losses.