Recently, we were surprised to learn that the jacketing on many common spark plug wires is only rated for 400° to 500° F. The shock came from the fact that most gasoline engines produce exhaust gas temperatures nearing 1,000° F right next to spark plug wires that can’t handle anywhere near that. One misstep in routing or one drooping wire can cause a needless side-of-the road breakdown that’s actually easy to avoid.

Protective coverings like Design Engineering, Inc.’s (DEI) new Black Titanium sleeving can add some quick, simple, and good-looking coverage to make sure all of those critical hoses and wires stay safe for the long haul. With 1,800° F direct heat and 2,500° F radiant heat ratings, they’re able to handle pretty much any kind of hotness a muscle car could throw at them.

“We have taken our Titanium LR™ technology and made it into the best protection sleeve on the market,” said Mike Buca of DEI. “Black Titanium Protect-A-Sleeve includes plain heat-shrink tubes to seal the sleeving ends and can cover standard hose clamps for a clean look.”

Their ½” inner diameter sleeves are available in 36” (P/N 010590) and 72” (P/N 010591) lengths to fit nicely over 8mm or 8.5mm performance plug wires. The 1” diameter version is available in a 36” length (P/N 010589) and is better-suited for things like wire harnesses, heater hoses, or air-conditioning lines. Either one is relatively cheap insurance with a braided black look that’s hard to beat.