Thermal Sleeves

Thermal sleeves are essential for protecting critical wiring, hoses, and fluid lines from radiant heat and direct contact with hot surfaces. Whether you're routing fuel lines near headers, shielding sensor wiring around a turbo, or simply cleaning up an engine bay, the right sleeve prevents heat soak, chafing, and premature failure.

We stock sleeves in multiple materials and diameters to match the application. The typical lineup includes aluminized fiberglass for high radiant-heat rejection, basalt or silica sleeves for continuous-high-temperature environments, and split-loom options when you need to wrap existing harnesses without disconnecting connectors. Each type balances temperature rating, abrasion resistance, and flexibility so you can choose the best fit for your project.

  • Deflects radiant heat to keep wire insulation and hose rubber within safe limits
  • Helps prevent vapor lock in fuel lines and fluid boiling in brake or clutch lines
  • Available in solid tube, split, and hook-and-loop closure styles for easy install
  • Sold by the foot, in pre-cut lengths, or as part of complete kit solutions
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DEI Titanium 10705 8-cylinder kit featuring 8 woven lava rock spark plug boots and 25 feet of heat-resistant wire sleeving.

$238.17

Out of stock
DEI RFI Shield 1/2-inch non-adhesive shielding tape with 17.5-inch grounding strap and silicone finishing tape.

$41.42

Out of stock
DEI Vapor Block 3/8 inch heat shield sleeve with split design and adhesive flap for fuel line insulation.

$16.43

Out of stock
DEI Easy Loom Master Kit containing various sizes of black split wire sleeving, heat shrink, zip ties, and tools.

$156.63

Low in stock
Black DEI Easy Loom split wire sleeve showing the braided P.E.T. monofilament texture and split design

$33.17

Out of stock
DEI 1/2 inch ID x 3 feet Titanium Protect-A-Sleeve woven heat protection sleeve for wires and hoses

$19.94

Low in stock
Black Titanium thermal sleeve with 1-inch inner diameter and 36-inch length for automotive wire and hose protection.

$38.81

Low in stock
DEI 10487 Heat Shroud 3ft aluminized glass fiber sleeve with hook-and-loop closure for 2.5-inch diameter lines.

$55.32

Low in stock
Gold metalized polyimide air tube heat shield cover with hook and loop closure for 3 to 4 inch diameter intake pipes.

$97.25

Low in stock
DEI Fire Wrap 3000 thermal insulator sleeve with hook and loop closure for 1-1/2 inch diameter hoses.

$95.16

Out of stock
DEI Fire Wrap 3000 silver thermal insulation sleeve with black hook and loop closure showing 1 inch internal diameter.

$75.39

Low in stock
DEI Fire Wrap 3000 thermal insulator sleeve with hook and loop closure for 5/8 inch hoses and wiring.

$69.47

Low in stock
DEI 1-inch ID silicone-coated braided glass Fire Sleeve with 16-inch black finishing tape

$47.97

In stock
DEI 3/4 inch ID orange silicone-coated fire sleeve and roll of black self-adhering fire tape.

$34.55

Low in stock
DEI 5/8-inch red silicone-coated fiberglass fire sleeve with black self-adhering finishing tape

$33.56

Out of stock
DEI 3/8 inch I.D. Fire Sleeve and black Fire Tape kit for automotive heat insulation and hose protection.

$26.85

In stock
DEI Heat Shroud GOLD with metalized polyimide surface and hook and loop closure for automotive wire and hose protection

$60.10

Low in stock
DEI Heat Shroud 3/4 inch ID aluminized heat sleeve with hook and loop closure for hose and wire protection.

$37.23

Low in stock
DEI Heat Sheath 1.5 inch ID aluminized thermal sleeve with sewn edge for hose and wire protection.

$28.23

In stock
DEI Heat Sheath silver aluminized heat reflective sleeving with sewn edge and 1 inch diameter

$22.47

Low in stock
DEI Heat Sheath 1/2 inch I.D. aluminized heat reflective sleeving with silver outer layer and sewn edge.

$16.97

In stock
DEI Heat Shroud 1 inch ID by 3 feet aluminized heat reflective sleeve featuring a hook and loop closure edge.

$45.07

Low in stock
DEI Heat Sheath 1-1/4 inch ID by 3 foot aluminized reflective heat sleeving with aramid sewn edge.

$24.25

Low in stock
DEI 3/4 inch inner diameter aluminized Heat Sheath sleeving with a silver reflective finish and sewn aramid edge.

$18.70

In stock

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