Upgraded Composite Material: Made from premium fiberglass and volcanic basalt fiber, this heat shield sleeve offers superior heat resistance, durability, and flexibility compared to standard options. Its enhanced pliability ensures an easy fit on 90° and 45° spark plug boots, even in tight engine spaces
Enhanced Spark Plug Protection: Effectively shields spark plug boots and wires from heat damage, preventing burn-through, hardening, and cracking. Improves engine reliability, extends component lifespan, and helps reduce the risk of misfires
High Temperature Resistance: This hose heat shield sleeve reduces up to 80% of radiant heat. The basalt composite material can withstand intermittent temperatures of 800–1000°C (1472–1832°F) and continuous exposure to 550–600°C (1022–1112°F), offering reliable protection for fuel lines and other critical components
Adjustable Length: The fuel line insulation measures approximately 10 ft (3 m) long, available in 1/2", 3/4", and 1" inner diameters. The spark plug heat sleeve protectors can be easily trimmed to fit each spark plug wire or boot. (To ensure a clean cut and prevent fraying, wrap the sleeve with the included tape before cutting.)
Universal Compatibility: Compatible with most straight and angled spark plug boots. Ideal for LS1, LS2, SBC, BBC, 350, and 454 engines, as well as a variety of cars, trucks, hot rods, and classic vehicles. Helps protect spark plug wires from excessive engine and exhaust heat