Speed Engineering LS/LT Spark Plug Wires

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US-made spark plug wires from Speed Engineering! These 45 degree angled plug wires work great with all of the Speed Engineering standard and swap headers. We have used several spar k plug wires over the years, and are happy to say these are one of the best fitting wires, with the most clearance you will find on the market. Choose from black or red wires in 10" or 12" lengths in the drop-down above. Note: Over the years, GM Trucks & SUV's have used different part number coils and locations. Some require a longer 12" wire, and some use a shorter 10" wire. Please verify which wire you have prior to ordering. Features include: "Made in the USA" Available in black or red Choose 10" or 12" length 45 Degree Angled Spark Plug Boots High Temp Heat Resistant Large 8.2MM 40-OHM Wires 8 Piece Set 4.8L, 5.3L, 6.0L, 6.2L Engines Applications: "Truck & SUV" 1999-13 (4.8L, 5.3L, 6.0L, 6.2L Engines) LT1 & LT4 Engines "Gen 5" Show more