{"product_id":"rlp-silicone-spark-plug-wires-for-small-block-ford-v8s-8-0mm-blue-hei-fit-kevlar-spiral-core","title":"RLP Silicone Spark Plug Wires for Small Block Ford V8s — 8.0mm Blue, HEI Fit, Kevlar Spiral Core","description":"\u003cp\u003e\u003cstrong\u003eRLP 8.0mm blue silicone spark plug wire set replaces worn leads on Small Block Ford V8s and delivers high-voltage transfer for HEI ignition systems.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese RLP replacement spark plug wires are built for Small Block Ford engines (221, 255, 260, 289, 302, 351W) that use HEI distributor caps. Designed with an 8.0mm heavy-duty silicone jacket around a Kevlar-wrapped spiral core, the set resists heat, oil and chemical exposure while suppressing EMI\/RFI to keep spark delivery consistent under demanding driving conditions.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these wires affect engine performance?\u003c\/h3\u003e\n\u003cp\u003eGood spark plug wires maintain reliable high-voltage transfer to each cylinder, supporting steady ignition timing and smoother running. The RLP wires use a low-resistance spiral conductor and quality terminals to minimize power loss and interference.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLow-resistance spiral core for efficient spark delivery\u003c\/li\u003e\n  \u003cli\u003eEMI\/RFI suppression to reduce ignition noise\u003c\/li\u003e\n  \u003cli\u003eStainless steel and brass terminals for better conductivity\u003c\/li\u003e\n  \u003cli\u003e8.0mm silicone jacket for thermal and chemical protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this set fit my Small Block Ford with HEI?\u003c\/h3\u003e\n\u003cp\u003eThis kit is made specifically for Small Block Ford V8 engines using HEI (High Energy Ignition) distributor systems, including common SBF displacements like the 302 and 351W. It does not work with point-type ignition systems and does not include a separate coil wire.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible: 221, 255, 260, 289, 302, 351W Small Block Fords\u003c\/li\u003e\n  \u003cli\u003eFits HEI distributor caps and coil-in-cap HEI designs\u003c\/li\u003e\n  \u003cli\u003eNot compatible with point ignition systems\u003c\/li\u003e\n  \u003cli\u003eCoil wire not included—use existing HEI coil lead or purchase separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the construction and durability features?\u003c\/h3\u003e\n\u003cp\u003eRLP wires combine a silicone outer jacket with a Kevlar-wrapped spiral core and reinforced terminals to withstand high under-hood temperatures and repeated service. The boots are high-temperature silicone, shaped for HEI distributor and angled plug connections to ensure secure seating and reduced strain.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHeavy-duty 8.0mm silicone jacket for heat and oil resistance\u003c\/li\u003e\n  \u003cli\u003eKevlar spiral-wound conductor for strength and low resistance\u003c\/li\u003e\n  \u003cli\u003eHigh-temp silicone boots: 90° for distributor, 135° for spark plugs\u003c\/li\u003e\n  \u003cli\u003eDurable stainless steel and brass terminal construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and what’s included?\u003c\/h3\u003e\n\u003cp\u003eThe set ships as eight pre-cut wires matched for V8 layouts and is a direct-replacement approach for HEI-equipped Small Block Fords. Installation follows standard plug-wire routing practices—replace one wire at a time to avoid misfiring and ensure proper firing order.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePackage includes: 8 spark plug wires\u003c\/li\u003e\n  \u003cli\u003ePre-shaped boots for distributor and spark plug ends\u003c\/li\u003e\n  \u003cli\u003eRecommended: change one wire at a time to keep firing order\u003c\/li\u003e\n  \u003cli\u003e12-month warranty covers defects; contact seller for replacement or refund\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? These RLP silicone spark plug wires are aimed at owners and mechanics of Small Block Ford V8 vehicles who use HEI ignition systems and want a durable, performance-oriented replacement. They suit classic restorations, routine maintenance, and drivers seeking improved interference suppression and thermal durability without changing ignition components.\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 work with point-type ignition?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — this set is designed for HEI systems only and is not compatible with point ignition setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include a coil wire for HEI?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — the package includes eight spark plug wires but does not include a separate coil wire.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"RLP","offers":[{"title":"Default Title","offer_id":48085632483486,"sku":"B09QLX1H77","price":49.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/rlp-front-packaging-blue-spark-plug-wires.jpg?v=1785875633","url":"https:\/\/northtrailauto.ca\/products\/rlp-silicone-spark-plug-wires-for-small-block-ford-v8s-8-0mm-blue-hei-fit-kevlar-spiral-core","provider":"North Trail Auto","version":"1.0","type":"link"}