Radiant heat from long-tube headers, turbo manifolds, and exhaust plumbing destroys spark plug boots and wires, causing misfires, arcing, and power loss that can be difficult to diagnose. Heatshield Products Stealth Lava Boot shields tackle that problem directly, wrapping plug boots in a dual-layer, high-temperature sleeve rated for continuous exposure up to 1,200°F and intermittent spikes to 2,000°F.
Dual-layer thermal defense where it counts. The thick insulation wall exceeding 0.050 inches blocks radiant heat before it reaches the boot material, keeping ignition voltage where it belongs: at the plug. Less heat-soak means fewer misfires and consistent spark delivery across all cylinders.
Flexible construction that fits without a fight. The soft, expandable sleeve slides over most plug boot sizes and angled designs without tools. A no-fray cuff and metal retention ring keep the sleeve seated against the boot rather than riding up the wire and leaving the plug exposed.
Stealth black finish for clean engine bay builds. The blackout exterior blends into dark engine bays and complements custom wiring on performance street cars where appearance matters as much as function. Available in 2-packs for targeted protection on problem cylinders or 8-packs for full V-engine coverage.
Built for demanding applications. Designed to handle the heat environments found in boosted engines, long tube header-equipped builds, classic muscle, marine power, off-road rigs, and tow vehicles. The flexible sleeve works around tight header clearances and angled boot positions that would bind a rigid protector.
Product Benefits
- 1,200°F Continuous Rating: Handles sustained extreme heat from headers and exhaust without degrading.
- 2,000°F Intermittent Rating: Survives short-duration heat spikes common near turbo and manifold surfaces.
- Dual-Layer Construction: Insulation wall over 0.050 inches thick for serious heat blocking.
- Metal Retention Ring: Locks the sleeve in position so the boot stays protected, not just the wire.
- No-Tool Installation: Slides on in seconds; no clamps, adhesives, or modifications required.
- Universal Fit: Compatible with most plug boot sizes, angles, and standard ignition systems.
- Stealth Black Finish: Clean blacked-out look that suits engine bay builds of any style.
- Made in the USA: Manufactured domestically with premium heat-resistant materials.
About Heatshield Products: Heatshield Products pioneered the spark plug boot protector category and continues to develop thermal management solutions for automotive, marine, and off-road applications. Every product is made in the USA and engineered to hold up in the harshest heat environments enthusiasts and racers encounter.
WARNING: California Residents: Cancer and Reproductive Harm;
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