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Your cart is empty.Design Engineering Heat Sheath is an aluminized sleeving sesigned to slide over wires, cables and hoses. Heat Sheath provides ultimate protection from extreme heat as well as chemical and oil spills, dirt, grease and road grime. Constructed from a high temperature fabric and bonded to an aluminized material to reflect heat. Heat Sheath is fireproof and withstands direct heat up to 500 degrees Fahrenheit.
Mark J.
July 15, 2025
I bougt the 1" heat sheath to protect the exhuast from my diesel heater from melting the fuel line. The cheap chinese stuff works ok but this stuff is much better. The inner fiberglass insulation is coated by a tougher alumnum outer coating. It's very easy to slide over the 1" exhaust tube and keeps heat away from the plastic fuel line. I had an extar 8" and covered the fuel line too so I'm double protected. Highly recommend spending the extra $$ for the good stuff if it's for safety. It's very ewsy to cut with a pair of scissors and it doesn't fray as easily as the cheap stuff does.
W. Seith
July 6, 2025
Fits perfectly over the fuel lines I am trying protect from heat and does a phenomenal job of keeping the fuel temp from rising from engine bay heat. Lower fuel temps translate into less fuel loss through vaporization, and less vapor lock/cavitation of the fuel pump. The perfect compliment to my high performance rig.
wcj56
June 29, 2025
I ordered 1" thinking it was going to be difficult to get my wiring through, I really could have done 3/4" or possibly 1/2". The ends do fray the fiberglass when you cut it so I just added some heat shrink on both ends. It is real fiberglass (very itchy) so take precaution when handling it. Works great for my starter wiring.
Gregski
June 16, 2025
I wish they updated the pic cause it does not look like that, but works great and is a quality product
Lindsay
June 4, 2025
Didn’t have to cut it so no problems with that, seems like it’s well put together but time will tell. Easy to use as it’s a simple design
Romey
April 16, 2025
Using this on my 2013 chevy cruze to cover a coolant line (that’s right next to the engine block) from being warped. So far after a few months, it’s holding up pretty good!
Steve Miller
March 28, 2025
Thought I was going to have to re-weld an aluminium fitting but this saved the day..
Dennis76nyc
March 6, 2025
lasted longer than the smaller hose cover
Owen D
January 30, 2025
Used to keep parts of a wiring harness and fuel lines protected in high temperature areas. Works as it should and easy enough to work with.
Paul Simmons
December 31, 2024
In DEI packaging. Real product. Worked great
Nicholas Kohner
December 26, 2024
Easy to use had some wires the melting after being to close to the exhaust. But the wire bundle in the sealed tube and no issues with wires melting
Customer
December 14, 2024
Put on my fuel line and it is doing what it is supposed to be doing. Fuel is cooler going into the Carb, confident vapor lock won't be an issue any more.
Customer
November 2, 2024
Worked great for shielding battery cable going to starter by headers.
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