{"product_id":"holley-efi-kit-big-wire-8-cylinder-smart-coil-kit-556-128","title":"Holley EFI Kit Big Wire 8 Cylinder Smart Coil Kit (556-128)","description":"\u003ch2 style=\"font-size:1.2rem;\"\u003eHolley EFI Kit Big Wire 8 Cylinder Smart Coil Kit (556-128)\u003c\/h2\u003e\u003cp\u003eHolley part number 556-128 is a performance ignition part.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eHolley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd\u003e556-128\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e090127002544\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003eIgnition Components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003ePerformance upgrade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping weight\u003c\/th\u003e\n\u003ctd\u003e10.0 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eBefore you buy: ignition part tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUse the spark plug heat range and gap your engine and tune call for; colder plugs are common on boosted or high-compression engines.\u003c\/li\u003e\n\u003cli\u003eReplace coils or plug wires as a set when one fails on an older engine.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eWill this Holley ignition part fit my vehicle?\u003c\/h3\u003e\u003cp\u003eCheck the sizes and application details in the specifications and manufacturer description below. \u003ca href=\"\/pages\/contact-us\"\u003eContact mobileiGo\u003c\/a\u003e with your year, make, model and engine if you are unsure.\u003c\/p\u003e\u003ch3\u003eWhat is the part number?\u003c\/h3\u003e\u003cp\u003eThe manufacturer part number is 556-128, and the UPC is 090127002544.\u003c\/p\u003e\u003ch3\u003eDo I need to gap these spark plugs?\u003c\/h3\u003e\u003cp\u003eCheck the gap before installing and set it to the value your engine or tune specifies. Some iridium and platinum plugs come pre-gapped; avoid bending fine-wire tips.\u003c\/p\u003e\u003ch3\u003eIs this part new?\u003c\/h3\u003e\u003cp\u003eYes. It is a new part sourced from an authorized distributor.\u003c\/p\u003e\u003c!-- tt-ap-content v1 --\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":67821437354303,"sku":"APG HOL556-128","price":779.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1639\/5151\/files\/HOL556-128_1.jpg?v=1792539338","url":"https:\/\/www.mobileigo.com\/products\/holley-efi-kit-big-wire-8-cylinder-smart-coil-kit-556-128","provider":"mobileiGo.com","version":"1.0","type":"link"}