Moroso 71977 High Temperature Spark plug boot sleeves 

• Have "Dual Wall" construction, which assures protection from spark plug and ignition wire burnout
• Protects up to 1200 Deg. F.
• Wires and Boots stay cooler in exhaust area
• Porous/breathable to reduce Oven Effect
• Non-conductive, non-flammable, will not react with petroleum based products
• 3/4" I.D., 7-1/2" Long
• Will work with 135 Deg. and 90 Deg. Spark Plug Boots
• Available in Black, Blue, Natural and Red in two-, four- and eight-pack options