When pushing high horsepower or towing heavy loads with your diesel truck, extreme engine bay temperatures are part of it. Radiant heat coming off custom manifolds, downpipes, and turbos can quickly degrade wiring harnesses, fuel lines, and sensor leads, leading to intermittent electrical glitches, melted insulation, or catastrophic component failure.

The Problem 

Factory plastic conduit and standard wire split-looms are built for everyday operating conditions, not high-heat performance environments. Exposed to radiant exhaust heat:

• Plastic splits become brittle: Standard loom hardens and cracks over time, leaving wires bare.

• Insulation melts: Soft wiring jackets fuse together under continuous thermal load, creating short circuits.

• Connectors bake: Plastic sensor connectors fail prematurely when left unshielded near exhaust components.

Key Features:

The Stainless Diesel Silver Velcro Heat Shield Wrap (SKU: VELHS-18) is specifically engineered to target high-temperature trouble spots around the turbo.

Quick Installation 

Installing velcro heat sleeve requires minimal tools and zero harness disassembly:

1. Clean the Target Area: Ensure the wiring bundle or line is free of grease and grit before wrapping.

2. Measure & Trim (If Needed): Position the 18" sleeve over the vulnerable section near the heat source. Cut to size if a shorter length is required.

3. Wrap & Press Seam: Wrap the sleeve around the hose or harness, lining up the heavy-duty velcro edges. Press firmly down the entire length to lock out ambient heat.

4. Inspect Clearance: Ensure the wrapped bundle maintains clear routing away from moving parts or sharp metal edges.

Investing in heat protection prevents frustrating electrical gremlins down the road. For less than $15, wrapping vulnerable engine bay wiring with a high-temp aluminum-Kevlar sleeve keeps your rig running reliably under peak boost and heavy loads.

Get yours here!