{"product_id":"rlp-universal-spark-plug-wire-set-for-chevy-v8s-8-5mm-red-9-piece-hei-kit-high-heat-silicone-spiral-wound-conductor","title":"RLP Universal Spark Plug Wire Set for Chevy V8s - 8.5mm Red 9-Piece HEI Kit, High-Heat Silicone \u0026 Spiral-Wound Conductor","description":"\u003cp\u003e\u003cstrong\u003eRLP's 8.5mm Universal Spark Plug Wire Set is a complete 9-piece high-voltage ignition lead kit designed for HEI-equipped Chevy small-block and big-block engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis set delivers heavy-duty 8.5mm spiral-wound wires with tightly woven fiberglass braids and thick silicone jackets engineered to tolerate high heat, oil exposure, and the electrical demands of performance V8 engines. The kit includes eight spark plug wires plus one coil wire, stainless steel and brass terminals, and 90° boots to suit a wide range of Chevrolet SBC and BBC applications.\u003c\/p\u003e\n\n\u003ch3\u003eWhich Chevy engines will these wires fit?\u003c\/h3\u003e\n\u003cp\u003eThese wires are built for universal fitment on HEI distributor systems and cover most classic and modern Chevy small-block and big-block V8 engines. Fitment includes many common displacements so enthusiasts can replace worn leads without hunting a model-specific set.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSmall Block examples: 302, 305, 307, 327, 350, 400\u003c\/li\u003e\n  \u003cli\u003eBig Block examples: 348, 366, 396, 402, 409, 427, 454, 502\u003c\/li\u003e\n  \u003cli\u003eCompatible with HEI distributors and V8 engines with 4.9L–10.4L displacements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat construction features improve performance and durability?\u003c\/h3\u003e\n\u003cp\u003eThe wires combine a spiral-wound conductor and high-dielectric insulator to suppress interference and carry higher voltages reliably. Heavy silicone jackets and fiberglass braiding add abrasion and heat resistance for long service life under demanding conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e8.5mm spiral-wound conductor for consistent high-voltage transfer\u003c\/li\u003e\n  \u003cli\u003eTightly woven fiberglass braid beneath silicone jacket for heat and abrasion protection\u003c\/li\u003e\n  \u003cli\u003eStainless steel and brass terminals for dependable conductivity\u003c\/li\u003e\n  \u003cli\u003e90° high-temp boots to reduce stress at connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and what comes in the kit?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for anyone familiar with HEI distributors and V8 firing orders: route the wires from coil to each plug, seat the 90° boots, and secure with existing clips or separators. The kit supplies the essentials for a complete ignition wiring refresh.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eComplete 9-piece kit: 8 plug wires plus 1 coil wire\u003c\/li\u003e\n  \u003cli\u003ePre-formed 90° boots for tight engine bays\u003c\/li\u003e\n  \u003cli\u003eFits standard HEI termination patterns—no custom crimping required\u003c\/li\u003e\n  \u003cli\u003ePackaged new and ready to install\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat warranty and quality assurances are included?\u003c\/h3\u003e\n\u003cp\u003eRLP ships each set brand-new and backs the product with a 12-month warranty to protect against manufacturing defects. Quality control standards are applied during production to ensure consistent fit and electrical performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e12-month limited warranty—replacement or refund if defective\u003c\/li\u003e\n  \u003cli\u003eManufactured to strict QC standards for reliability\u003c\/li\u003e\n  \u003cli\u003eReplaces common part references used for HEI V8 ignition systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: mechanics, restorers, and performance hobbyists who need a robust, universal spark plug wire kit for Chevy HEI small-block and big-block V8 engines will benefit from the RLP 8.5mm set. It suits classic car restorations, engine rebuilds, and track-day updates where dependable high-voltage delivery, heat resistance, and straightforward installation matter. If you want a single kit that covers coil and all eight plugs with durable construction and a modest warranty, this set is a practical, cost-effective choice.\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: Are these wires compatible with HEI distributors?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This 9-piece RLP set is made for HEI systems on Chevy SBC and BBC engines, including coil and eight plug connections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What does the 12-month warranty cover?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The warranty covers manufacturing defects; RLP will replace or refund faulty sets within 12 months of purchase.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"RLP","offers":[{"title":"Default Title","offer_id":48085871394974,"sku":"B0B28C17PY","price":48.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/rlp-front-packaging-8.5mm-red-wires.jpg?v=1785878778","url":"https:\/\/northtrailauto.ca\/products\/rlp-universal-spark-plug-wire-set-for-chevy-v8s-8-5mm-red-9-piece-hei-kit-high-heat-silicone-spiral-wound-conductor","provider":"North Trail Auto","version":"1.0","type":"link"}