Spark Plug Boot Sleeves

Spark Plug and Ignition Wire Protection


Extend the useful life of your expensive plug wire sets and protect your engine from damage due to plug wire burnout with our genuine Techflex Insultherm cable/boot sleeves.

These heavyweight, double thickness 3/4" diameter sleeves will withstand continuous operating environments up to 1,200°F and the easy to install design will fit on virtually every plug/cable/boot configuration, even right angle systems. These products provide extra protection for deep mounted plugs, custom header systems and other high-performance engine compartment modifications. Insultherm® Spark Plug Boot Sleeves are fully RoHS compliant and are available in 4 colors.

For a complete solution, protect ignition wires with our flexible Ultraflexx Fiberglass sleeving.

spark plug boot application 1

Once installed, these sleeves require no clearance from hot surfaces, and can even rest directly on hot exhaust headers without any effect.

  • Resin Coated Fiberglass
  • Will Not Burn or Support Combustion
  • Easy, No Tool Installation
  • Operating Temps: -94°F to 1,202°F (-70°C to 650°C)
  • Extremely Abrasion and Cut Resistant
  • Resists Common Chemicals & Solvents
  • Available In 4 Colors
  • Melt Temp: 2,048°F/1,120°C

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