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.
- Slide over wires, cables and hoses for extreme heat protection
- Withstands 500 degrees F direct, continuous heat and 2000 degrees F radiant heat
- Pliable for tight bends
- Trim to desired length
- Five popular diameters to choose from: 1/2″, 3/4″, 1″, 1-1/4″, and 1-1/2″


































dadogg –
I needed heat protection for a couple of 16 awg gxl lines I ran to power rock lighting under my off-roader since the wires route past the exhaust man and the catalytic converter. I mean, yes the wiring is a good 6″ away, but why take a chance since melted wires will result in a short which can result in fire. This sleeve slid over the wire loom with some maneuvering since I ordered the 1/2″ heat sheath and the loom was 1/4″, but that was my bad. In the end, this is doing just what I wanted, protecting the wiring from extreme temperatures in the engine bay. Now I haven’t taken the vehicle on a good long shake-out run yet, but I will and if there are problems, I will update this review.
KR –
I used a 3/4″ x 3 feet sheath. It was used around a 0awg (8.25mm) start cable that was installed in close proximity to the catalytic converter. The starter solenoid wires were double shielded, so I folded the 3/4″ sleeve and used stainless steel ties to hold the folded sleeve in place around the 0awg cable.+ Seems to be av good quality materials.+ Good stitching.- Large flap with company logo(Understand logo solution – removed flap for cleaner install)
susan soriano –
Ordered 1/2″ for the metal fuel line but was a little tight. still worked. I would go with 3/4″ in the future
Stephen N. –
Tad bit large
Lindsay –
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 –
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!
KevinJames –
I bought this to go around my transmission lines but to my surprise it’s all sewed together, which is fine but it’s hard work to pull lines and slide this on. I was thinking it was velcro and I could just wrap my lines.
t-bird-88 –
As always a great product slides over metal fuel line and should block heat