{"product_id":"rlp-universal-spark-plug-wire-set-8-5mm-red-silicone-with-90-boots-high-temp-rfi-suppressing-ignition-wires","title":"RLP Universal Spark Plug Wire Set 8.5mm Red Silicone with 90° Boots — High-Temp, RFI-Suppressing Ignition Wires","description":"\u003cp\u003e\u003cstrong\u003eRLP Universal Spark Plug Wire Set is an 8.5mm high-gloss red silicone ignition wire kit with 90° boots engineered to increase spark delivery and resist heat, moisture, and chemicals for street-driven vehicles.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis RLP wire set upgrades original-equipment ignition wiring for improved spark energy and durability in both universal and custom-fit applications. Built with a conductive carbon-black core for RFI suppression, EPDM inner insulation, and a tightly woven fiberglass braid covered by a 450°F-rated silicone jacket, the set is designed to meet or exceed SAE standards for ignition performance and longevity.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this wire set improve ignition performance?\u003c\/h3\u003e\n\u003cp\u003eThe wires use a low-resistance (approximately 5000 ohms\/ft) conductive core that lets more ignition energy reach the plug, producing a stronger, longer-lasting spark. Reduced electrical interference helps stable ignition timing and cleaner firing under load.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConductive carbon-black core for effective RFI suppression\u003c\/li\u003e\n  \u003cli\u003e5000 ohms\/ft resistance balances energy delivery and interference control\u003c\/li\u003e\n  \u003cli\u003eStainless steel plug terminals for reliable conductivity and corrosion resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill they withstand high under-hood temperatures and contaminants?\u003c\/h3\u003e\n\u003cp\u003eYes — the wires are wrapped in a double-layer silicone jacket rated to 450°F, offering resistance to heat, oil, and road chemicals. The tightly woven fiberglass braid under the silicone adds mechanical strength and helps terminal retention under vibration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e8.5mm high-gloss silicone jacket resists heat and chemicals\u003c\/li\u003e\n  \u003cli\u003eFiberglass braid improves pull strength and abrasion resistance\u003c\/li\u003e\n  \u003cli\u003eEPDM inner insulation provides high dielectric strength\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these wires compatible with my vehicle and installation types?\u003c\/h3\u003e\n\u003cp\u003eThe set is offered for universal and custom-fit installations across many early and late-model cars and trucks and is a direct replacement for part number 4041. They work with pre-HEI and post-HEI ignition systems, making them versatile for restoration or performance upgrades.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces part number 4041 for direct-fit or universal routing\u003c\/li\u003e\n  \u003cli\u003eCompatible with pre-HEI and post-HEI ignition systems\u003c\/li\u003e\n  \u003cli\u003eAvailable for universal\/custom-fit applications to suit routing needs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat durability and warranty protections are included?\u003c\/h3\u003e\n\u003cp\u003eThe combination of stainless steel terminals, fiberglass braid, and a high-temperature silicone jacket extends service life and resists environmental degradation. RLP backs the wire set with a two-year warranty for added peace of mind on street-driven vehicles.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStainless steel plug terminals resist corrosion and maintain conductivity\u003c\/li\u003e\n  \u003cli\u003eHigh-strength construction designed for longer terminal retention\u003c\/li\u003e\n  \u003cli\u003e2-year limited warranty from RLP for manufacturing issues\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The RLP Universal 8.5mm Spark Plug Wire Set is ideal for owners restoring older vehicles, upgrading ignition wiring on street-driven performance cars, or anyone needing a universal or custom-fit replacement for part 4041. Choose this kit if you want improved spark energy, better RFI control, and durable materials that tolerate extreme under-hood conditions without sacrificing appearance.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these wires fit my vehicle model?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They’re available for universal and custom-fit applications and replace part number 4041; check fitment listings for specific vehicle compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What temperature can the silicone jacket handle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The double silicone jacket is rated to 450°F, offering strong resistance to heat, oils, and road chemicals.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"RLP","offers":[{"title":"Default Title","offer_id":48086777069726,"sku":"B09WVJ3D67","price":58.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/rlp-red-spark-plug-wires-front-packaging.jpg?v=1785904694","url":"https:\/\/northtrailauto.ca\/products\/rlp-universal-spark-plug-wire-set-8-5mm-red-silicone-with-90-boots-high-temp-rfi-suppressing-ignition-wires","provider":"North Trail Auto","version":"1.0","type":"link"}