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Your cart is empty.Features: These plug wire heat shields slid right over the existing metal heat shields/springs with ease, even going around the angled plug boot without issue. Fit for most straight or angled boots. Protect spark plug boots and wires from extreme temperatures generated by vehicle exhaust headers and manifolds. Helps prevent burn-through, hardening and cracking of boots that could lead to engine misfire and damage If you like your plug wires use these plug wire sleeves! High temps coming off your manifolds or headers will destroy even the best plug wire. Spend a little bit of cash to save you big bucks later and not just on the wires, what about a tow bill? These could save time, money and aggravation! Great protection for your spark plug wires. Specifications: Size: 1.18inch(3cm) 6.1inch(15.5cm). Rated for 1600 DegreeF continuous use, 1800 DegreeF intermittent. Package list: 8pcs Black Spark Plug Sleeve Boots.