Wall Fiberglass Sleeves Protect Wires &
Spark Plug Boots up to 650°C
Insultherm Spark Plug Boot Sleeves can
rest directly on hot
headers and other engine
components without burning,
melting or becoming brittle.
For decades, Techflex’s Insultherm
Fiberglass Sleeving has been the first choice
among automotive professionals and enthusiasts
alike for many of their thermal protection
sleeves offer the same high temperature protection
in an easy slip on sleeve that will extend the
life of expensive spark plug wires by protecting
them where they need it most... at the boot. Just
slip these 3/4” diameter double thickness (triple
thick at the sewn end) sleeves over any spark plug
cable and boot (even right angle boots) to protect
them from engine temperatures up to 650°C /1,200°F.
Once installed, the sleeves require no clearance
from hot surfaces, and can even rest directly on
hot exhaust headers without affecting performance.
Plug Boot Sleeves are completely non-conductive,
resist all engine chemicals, will not support
combustion, and provide an easy, economical
solution to the challenge of wire protection in
the cramped, high temperature environment of any
high performance engine compartment.
Insultherm Braided Fiberglass Sleeving is
available in Black, Natural, Red and Blue.
Insultherm Spark Plug Boot Sleeves are
available in retail packaging.