Longacre Racing - Exhaust Insulation Wrap 50" x 2" x 1/32" Thick (64830)Contains exhaust heat for better velocity, scavenging and more power plus cooler under hood temps. 2" wide, 100' roll is enough for most V8 headers. Use to insulate exhaust collectors and pipes, mufflers, oil and fuel lines. JEGS Easy Kits are designed by JEGS high performance racing professionals to help you get all the performance parts you need for your race car, hot rod or truck. Exhaust Insulation Wrap 50' x 2" x 1 32" Thick Max Temperature: