Proven Heat Defense for Peak Engine Performance
Personalized Custom Solutions
Lava®/Stealth® Boot
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
FIND DEALER
Premiere Dealer
Lava®/Stealth® Boot
Product Types
SKU
Description
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)
400508
Stealth Lava - 1 in ID x 6 in (8 Pk)
Spark Plug Boot Shield Protection
When heat threatens spark performance and ignition durability, Heatshield Products spark plug 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. As a result, they help reduce the risk of 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 spark plug 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. This helps prevent it from sliding up the wire and exposing the plug boot.
Stealth Boots offer the same performance in a blackout finish. In addition, both styles use rugged high-temp sleeving for dependable 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. They help protect wires and boots from extreme engine and exhaust temperatures.
The no-fray cuff and flexible construction make installation quick. Simply slide the shield over the plug boot with no tools required.
These sleeves also help reduce the risk of misfires and arcing caused by heat-soak damage. As a result, they can help prevent 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. Both provide the same race-tested performance and heat control.
Available in 2-packs for problem cylinders or 8-packs for full V-engine coverage, these spark plug boot shields offer flexible protection for repairs, upgrades, or complete ignition system defense. In short, they help protect your plug boots, protect your spark, and keep performance more consistent.
Complete Your Heat Protection
Spark plug boot shields protect the plug boots and ignition wires, but nearby headers and exhaust pipes can still create intense radiant heat. For additional protection, pair them with Heatshield Armor® on exhaust components or Lava® Exhaust Wrap on headers and pipes.
Related Products
Simple installation – in minutes
