Lava®/Stealth® Boot

2-pack brown Lava spark plug boot heat shields from Heatshield Products for high-temperature ignition protection.

8-pack brown Lava spark plug boot heat shields for high-temp ignition protection, Heatshield Products branding.

Stealth spark plug boot heat shields by Heatshield Products, black high-temp sleeves for ignition wire protection.

8-pack black Stealth spark plug boot heat shields for high-temp ignition protection by Heatshield Products.

American Made Since 1985

Lava®/Stealth® Boot

Proven Heat Defense for Peak Engine Performance

Lava and Stealth Boot Shields are high-temperature spark plug boot protectors engineered to defend plug boots and wires from extreme engine and exhaust heat. Made from dual-layer heat-resistant material and designed to handle up to 1,200°F, they help prevent wire and boot burnout, reduce misfires, and maintain ignition performance in high-heat environments. Available in Lava (natural basalt fiber) and Stealth (black finish) to match engine bay style and performance needs, they fit most plug boot sizes and angles and install easily. Proudly made in the USA.

Shields spark plug boots from radiant heat up to 1,200°F
Helps prevent plug wire burnout and heat-related misfires
Flexible dual-layer sleeve fits most boots and angled plug designs
Soft, expandable construction for fast, easy installation
Stealth black or Lava basalt finish to match your build style
Compatible with LS and standard ignition systems
Thick insulation wall over 0.050″ for enhanced heat blocking
Made in the USA with premium heat-resistant materials

1200°F

649 °C

Continuous

2000°F

1093 °C

Intermittent

Instruction Sheet

Product Types

400702

Lava - 1 in ID x 6 in (2 Pk)

400708

Lava - 1 in ID x 6 in (8 Pk)

400502

Stealth Lava - 1 in ID x 6 in (2 Pk) - Coming Soon!

400508

Stealth Lava - 1 in ID x 6 in (8 Pk) - Coming Soon!

When heat threatens spark performance and ignition durability, Heatshield Products Boot Shields deliver serious protection for serious builds. Available in our original Lava® Boot Shields with a natural basalt finish and our sleek Stealth® Boot Shields in deep black, these high-temp spark plug boot protectors defend against extreme radiant heat and help prevent misfires, wire failures, and power loss in high-heat engine bays.

The First Boot Protection Company

We were the first to develop spark plug boot protectors, and our Boot Shields continue that legacy with the same high-quality engineering. Each Lava Boot features a metal retention ring that keeps the sleeve securely in place to prevent it from sliding up the wire and exposing the plug boot. Stealth Boots feature the same performance in a blackout finish. Both use rugged high-temp sleeving for superior thermal protection and long-term durability.

Premium US-Made Thermal Defense

Built from dual-layer high-temperature materials, Lava and Stealth Boot Shields withstand up to 1200°F continuous heat, protecting wires and boots from extreme engine and exhaust temperatures. The no-fray cuff and flexible construction make installation quick — simply slide over the plug boot with no tools required. These sleeves help eliminate misfires and arcing caused by heat-soak damage, preventing performance loss and potential engine harm from a cylinder not firing.

Designed for boosted engines, long-tube headers, LS swaps, classic muscle, marine power, off-road rigs, and tow vehicles, they flex easily around angled boots and tight header clearances. Choose Lava for a premium basalt finish or Stealth for a clean blacked-out look that disappears into the bay — both featuring the same race-tested performance and heat control.

Available in 2-packs for problem cylinders or 8-packs for full V-engine coverage, Boot Shields offer flexible protection for repairs, upgrades, or complete ignition system defense. Protect your plug boots. Protect your spark. Run cooler, last longer, and keep performance consistent — with Lava and Stealth Boot Shields from Heatshield Products.