{"product_id":"a-premium-hei-spark-plug-wires-set-of-9-for-chevrolet-v8-10-5mm-blue-silicone-90-boots","title":"A-Premium HEI Spark Plug Wires Set of 9 for Chevrolet V8 — 10.5mm Blue Silicone, 90° Boots","description":"\u003cp\u003e\u003cstrong\u003eThe A-Premium 10.5MM Electronic Ignition HEI spark plug wire set is a nine-piece, silicone-jacketed wiring kit designed to deliver reliable ignition performance for many Chevrolet small- and big-block V8 engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis complete set of nine blue spark plug wires is built with 10.5mm diameter cores, silicone insulation, and 90-degree boots on both ends to provide improved dielectric strength, heat resistance, and a neater engine-bay routing. The kit includes a range of lengths to match the different cylinder positions on common Chevy V8s, and A-Premium backs the product with a one-year unlimited-mileage warranty for added confidence.\u003c\/p\u003e\n\n\u003ch3\u003eWhich Chevrolet engines will these wires fit?\u003c\/h3\u003e\n\n\u003cp\u003eThese wires are supplied as a universal replacement kit intended for many Chevrolet small-block and big-block V8 engines. They cover a broad set of displacements and factory families when used with compatible HEI distributors and terminals.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCompatible with SBC 302, 305, 307, 327, 350, 400 series engines\u003c\/li\u003e\n  \u003cli\u003eWorks with BBC 348, 366, 396, 402, 409, 427, 454, 496, 502, 572, 632\u003c\/li\u003e\n  \u003cli\u003eCovers displacements from roughly 4.9L up to 10.4L for V8 applications\u003c\/li\u003e\n  \u003cli\u003eIntended for vehicles using HEI-style distributors and standard spark plug\/coil terminals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the wire specifications and included lengths?\u003c\/h3\u003e\n\n\u003cp\u003eEach cable in this nine-piece kit features a 10.5mm diameter core with silicone insulation and silicone outer jacket for improved heat and ozone resistance. The wires arrive pre-cut in specific lengths to simplify installation and ensure proper routing without stretching or excess slack.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eWire diameter: 10.5 mm for solid dielectric and suppression properties\u003c\/li\u003e\n  \u003cli\u003eInsulation \u0026amp; jacket: high-temp silicone for durability in hot engine bays\u003c\/li\u003e\n  \u003cli\u003eBoots: 90-degree on both ends to ease tight-angle connections\u003c\/li\u003e\n  \u003cli\u003eIncluded lengths: 45.9\", 41.5\", 38.6\", 36.6\", 3×32.7\", 29.1\", 20.7\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these wires affect installation and engine appearance?\u003c\/h3\u003e\n\n\u003cp\u003eThe silicone jacket and color-coordinated blue finish help keep the engine bay tidy while resisting oil and heat. Ninety-degree boots make connections easier in confined spaces and help prevent kinking at attachment points.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eColor: vibrant blue jacket improves visual organization under the hood\u003c\/li\u003e\n  \u003cli\u003eBoot angle: 90° boots reduce stress at terminals and simplify tight installs\u003c\/li\u003e\n  \u003cli\u003ePre-sized lengths: minimize trimming or juggling during routing\u003c\/li\u003e\n  \u003cli\u003eDurability: silicone resists cracking, keeping connections sealed longer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat warranty and part references come with the set?\u003c\/h3\u003e\n\n\u003cp\u003eA-Premium supports this ignition wire kit with a one-year unlimited-mileage guarantee, which covers workmanship and materials under normal use. The product also lists common reference numbers to help confirm fitment when cross-referencing parts catalogs.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOne-year unlimited-mileage guarantee for manufacturing defects\u003c\/li\u003e\n  \u003cli\u003eReference numbers: SP10-390-1010, SBC350, SP103901010 for compatibility checks\u003c\/li\u003e\n  \u003cli\u003ePack quantity: 9 pieces — full set for most V8 HEI ignition systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This A-Premium nine-piece 10.5mm HEI spark plug wire set is aimed at classic Chevy V8 owners, restoration shops, and performance hobbyists who need a complete, durable wiring kit for small-block and big-block engines. Choose this set if you want silicone-insulated cables with 90-degree boots, pre-cut lengths for straightforward installation, and a clear warranty to back the purchase.\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 HEI distributors?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—this nine-piece kit is designed for HEI-style distributors common on Chevrolet small- and big-block V8s.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is covered by the warranty?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: A-Premium provides a one-year unlimited-mileage guarantee covering defects in materials and workmanship.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"A-Premium","offers":[{"title":"Default Title","offer_id":48082983813278,"sku":"B0CNH4LLK1","price":52.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/a-premium-front-packaging-v8-blue.jpg?v=1785821747","url":"https:\/\/northtrailauto.ca\/products\/a-premium-hei-spark-plug-wires-set-of-9-for-chevrolet-v8-10-5mm-blue-silicone-90-boots","provider":"North Trail Auto","version":"1.0","type":"link"}