{"product_id":"spark-plug-wire-set-univ-gm-ls-cut-to-fit-black","title":"Holley EFI Spark Plug Wire Set Universal GM LS 8.2mm Spiral Core Black — Cut-to-Fit V8 Engines","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/zKcsT9_vhBw\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eUnleash Maximum Spark Energy with Holley EFI LS Spark Plug Wires\u003c\/h2\u003e\u003cp\u003eEnsure your GM LS V8 engine receives every ounce of ignition energy with the \u003cstrong\u003eHolley EFI Spark Plug Wire Set 561-113\u003c\/strong\u003e. This universal, cut-to-fit kit is engineered to deliver superior spark delivery, crucial for maximizing horsepower, improving throttle response, and maintaining engine efficiency. Designed for enthusiasts who demand precision and performance, these 8.2mm spiral core wires are the ideal upgrade for any LS-powered vehicle, from street machines to dedicated race cars.\u003c\/p\u003e\u003ch3\u003ePremium Features for Peak Ignition:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e8.2mm Spiral Core Design:\u003c\/strong\u003e Features a low-resistance spiral core conductor that provides maximum spark energy transfer while effectively suppressing electromagnetic interference (EMI).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Black Silicone Jacket:\u003c\/strong\u003e Constructed with a high-temperature black silicone outer jacket, offering excellent resistance to heat, abrasion, and chemicals for long-lasting performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Boot Configuration:\u003c\/strong\u003e Includes both straight and 90-degree spark plug boots, along with socket-style distributor boots, providing flexibility for various engine bay layouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCut-to-Fit Customization:\u003c\/strong\u003e The universal cut-to-fit design allows for precise length adjustment, ensuring a clean, professional installation tailored to your specific engine and routing needs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eEngineered for GM LS V8 Performance\u003c\/h3\u003e\u003cp\u003eThe Holley EFI 561-113 spark plug wire set is specifically designed to meet the rigorous demands of GM LS V8 engines. Whether you're running a naturally aspirated setup or a forced induction monster, these wires provide the reliable, consistent spark required for optimal combustion. Their robust construction and superior conductivity help prevent misfires and ensure a smooth, powerful engine operation under all conditions.\u003c\/p\u003e\u003ch3\u003eWhy Upgrade Your Ignition Wires?\u003c\/h3\u003e\u003cp\u003eOld or inferior spark plug wires can lead to energy loss, misfires, and reduced engine performance. Upgrading to Holley EFI wires ensures that your ignition system is operating at its peak, translating directly into more power and better fuel economy. Experience the difference in your LS engine's performance with this premium wire set, available now at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/smart-coil-kit-8-cyl\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI Spark Plug Wire Set Universal GM LS 8.2mm Spiral Core Black \\u2014 Cut-to-Fit V8 Engines\",\"description\":\"Maximize ignition performance with Holley EFI 561-113 Spark Plug Wires. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI Spark Plug Wire Set Universal GM LS 8.2mm Spiral Core Black \\u2014 Cut-to-?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. 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