NGK Part 52347 Ultra-Low Resistance Spark Plug Wire Set for Ford Bronco and Mercury Marquis

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. 8 Wires (w/Coil Lead)

• LIMITED LIFETIME WARRANTY: See package for details

The NGK Part 52347 spark plug wire set is engineered for high-performance ignition systems in classic vehicles such as the Ford Bronco and Mercury Marquis from the late 1970s. Crafted with a high-temp premium silicone outer jacket and EPDM silicone inner insulation, these wires are designed to contain and safely transmit high voltage currents, providing excellent dielectric strength and durability under demanding conditions. The stainless steel winding over a premium ferrite magnetic core ensures ultra-low resistance, resulting in a more powerful spark for improved engine performance and fuel efficiency. Additionally, these wires excel at suppressing EMI and RFI noise, which can otherwise interfere with vehicle electronics and radio signals. The set includes eight wires with a coil lead, all fitted with OE or better specified spark plug and distributor boots that guarantee a precise fit and long-lasting performance. The boots are glued to the cable with a silicone sealer to ensure a watertight seal, preventing moisture ingress that could compromise performance. Stainless steel terminals with up to three serrated crimps provide maximum retention strength, securing the connection even in rough driving conditions. The locking C-shaped spring clip, with corrosion-resistant plating, offers a secure and positive connection to the spark plugs, minimizing misfires and ensuring reliable ignition. Designed specifically for 1977 and 1978 Ford Ranchero models as well as Mercury Marquis from the same period, these NGK wires are backed by a limited lifetime warranty, reflecting their quality and durability. Whether restoring a vintage vehicle or upgrading an existing ignition system, the NGK spark plug wire set delivers consistent performance and peace of mind for automotive enthusiasts and professionals alike.

Features:

• High-temperature silicone outer jacket and EPDM silicone insulation for excellent dielectric strength and durability

• Stainless steel winding over ferrite magnetic core for ultra-low resistance and powerful spark

• OE or better specified spark plug and distributor boots for optimal fit and performance

• Watertight seal with silicone sealer ensures protection against moisture ingress

• Stainless steel terminals with serrated crimps for maximum retention strength

• Locking C-shaped spring clip with corrosion-resistant plating for secure connection

• Includes 8 wires with coil lead, designed for 1977-1978 Ford Ranchero and Mercury Marquis models

• Limited lifetime warranty provides added confidence in product durability