NGK ultra-low resistance mag core wire sets provide outstanding performance and durability. High-temp premium silicone outer jacket and inner EPDM/silicone insulation contain high voltage currents for excellent dielectric strength. Stainless steel winding over premium ferrite magnetic core delivers ultra-low resistance, a more powerful spark and excellent EMI/RFI noise suppression. OE or better specified spark plug and distributor boots ensure the highest quality fit, performance and durability in every application. Spark plug boots are glued to NGK cable with a silicone sealer for a watertight seal. Stainless steel terminals utilizing up to 3 serrated crimps bite into cable jacket and inner insulation for the highest terminal retention strength (wherever possible). Locking C-shaped spring clip with corrosion-resistant plating ensures a secure and positive spark plug terminal connection. 6 Wires (w/Coil Lead)

LIMITED LIFETIME WARRANTY: See package for details

Upgrade your vehicle's ignition system with the NGK GMC Syclone 1991 Spark Plug Wire Set, part number 51158. Designed for optimal performance and durability, these wires feature a high-temperature premium silicone outer jacket and EPDM/silicone inner insulation, effectively containing high voltage currents to ensure excellent dielectric strength. The stainless steel winding over a premium ferrite magnetic core provides ultra-low resistance, resulting in a more powerful spark that enhances engine efficiency and responsiveness. Additionally, the wires are engineered to suppress electromagnetic interference (EMI) and radio-frequency interference (RFI), minimizing electrical noise and ensuring smooth operation of your vehicle's electronic systems.

Each wire set includes six wires with a coil lead, and the boots are designed to meet or exceed original equipment specifications for fit, performance, and durability. The spark plug boots are securely glued to the NGK cable with a silicone sealer, creating a watertight seal that protects against moisture and debris. Stainless steel terminals with up to three serrated crimps provide exceptional terminal retention, biting firmly into the cable jacket and insulation for reliable electrical contact. The locking C-shaped spring clip, plated with corrosion-resistant material, ensures a secure and positive connection to the spark plugs, reducing the risk of disconnection during operation.

Built to fit specific models such as the 1991 GMC Syclone, 1992 GMC Typhoon, and 1993 GMC Typhoon, this wire set offers a trusted replacement with a limited lifetime warranty. Whether you're performing routine maintenance or restoring your vehicle's ignition system, the NGK GMC Syclone 1991 Spark Plug Wire Set provides the high-quality performance and durability you need for confident driving and optimal engine performance.

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