{"product_id":"acdelco-spark-plug-wire-set-748uu-for-gm-vehicles-silicone-jacket-carbon-impregnated-core","title":"ACDelco Spark Plug Wire Set 748UU for GM vehicles — Silicone Jacket, Carbon-Impregnated Core","description":"\u003cp\u003e\u003cstrong\u003eACDelco 748UU is a GM Original Equipment spark plug wire set engineered to deliver the factory fit, reliable conductivity, and EMI\/RFI suppression your GM vehicle requires.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese spark plug wires are built to the specifications of General Motors to replace the original wiring on many GM cars, light trucks, and SUVs. Constructed with thick silicone jackets, fiberglass braid and a carbon-impregnated fiberglass core, the 748UU set balances durability with electrical performance so your ignition components get consistent spark transfer while resisting engine-bay heat, abrasion, and contaminants.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the ACDelco 748UU improve ignition reliability?\u003c\/h3\u003e\n\u003cp\u003eThe 748UU wires maintain stable spark delivery by combining a conductive fiberglass core with carbon impregnation to manage resistance and prevent misfires. Terminals and boots are shaped and constructed to secure plugs and seals, lowering the chance of arcing and moisture intrusion that cause ignition faults.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCarbon-impregnated fiberglass core for controlled conductivity\u003c\/li\u003e\n  \u003cli\u003eTerminal design that improves plug retention and resists corrosion\u003c\/li\u003e\n  \u003cli\u003eSilicone jackets and fiberglass braid for abrasion and heat resistance\u003c\/li\u003e\n  \u003cli\u003eBoot geometry that creates a water-tight seal at the spark plug\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these wires fit my GM vehicle and match factory performance?\u003c\/h3\u003e\n\u003cp\u003eACDelco GM Original Equipment wires are manufactured to match the fit, routing, and electrical characteristics of the factory components they replace. The 748UU set is a GM-recommended replacement part, built to the same form and functional standards so installation is straightforward and driving characteristics remain consistent.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngineered to GM OE specifications for correct length and boot angle\u003c\/li\u003e\n  \u003cli\u003eDirect-replacement terminals and boot materials for original fit\u003c\/li\u003e\n  \u003cli\u003eSAE J23031 Class E rating for temperature and electrical resilience\u003c\/li\u003e\n  \u003cli\u003eExtensively tested for compatibility across specified GM models\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does ACDelco control electrical noise and interference?\u003c\/h3\u003e\n\u003cp\u003eThe 748UU spark plug wires incorporate materials and design features to suppress electromagnetic interference (EMI) and radio frequency interference (RFI). That reduces ignition-related noise that can affect onboard electronics, radios, and diagnostics, helping systems perform as intended.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCarbon-impregnated core that damps high-frequency interference\u003c\/li\u003e\n  \u003cli\u003eFiberglass braid and outer silicone jacket that shield and protect\u003c\/li\u003e\n  \u003cli\u003eConsistent resistance profile to stabilize spark timing and signals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat durability features protect the wires in the engine bay?\u003c\/h3\u003e\n\u003cp\u003eDesigned for the harsh conditions under the hood, ACDelco 748UU wires use thick silicone jackets and fiberglass reinforcement to resist heat, oil, road grime, and physical wear. Corrosion-resistant terminals and firm boot seals help extend service life and maintain performance even in demanding environments.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThick silicone outer jacket resists heat and chemical exposure\u003c\/li\u003e\n  \u003cli\u003eFiberglass braid adds strength against abrasion and flexing\u003c\/li\u003e\n  \u003cli\u003eCorrosion-resistant terminals extend connection life\u003c\/li\u003e\n  \u003cli\u003eSAE Class E rating for thermal and electrical durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The ACDelco 748UU GM Original Equipment Spark Plug Wire Set is aimed at owners and technicians who want a direct-fit, GM-approved replacement that maintains the original vehicle’s ignition performance and protects against EMI\/RFI. It’s a practical choice for routine maintenance or restoration on compatible GM cars, light trucks, and SUVs when you prioritize factory-matched reliability, durable materials, and straightforward installation.\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 ACDelco 748UU wires a direct replacement for GM factory wires?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 748UU is manufactured to GM original-equipment specifications for fit, form, and function.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these wires reduce ignition interference with radios and electronics?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The carbon-impregnated core and construction help suppress EMI and RFI to reduce electrical noise.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ACDelco","offers":[{"title":"Default Title","offer_id":48080141779102,"sku":"B001NZX5B2","price":148.04,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/acdelco-748uu-front-view-packaging.jpg?v=1785779256","url":"https:\/\/northtrailauto.ca\/products\/acdelco-spark-plug-wire-set-748uu-for-gm-vehicles-silicone-jacket-carbon-impregnated-core","provider":"North Trail Auto","version":"1.0","type":"link"}