{"product_id":"holley-efi-terminator-stealth-2x4-main-harness-558-121","title":"Holley EFI Terminator Stealth 2x4 Main Harness - 558-121","description":"Introducing 2x4 Terminator Stealth EFI upgrade components. The wait is over. These upgrade components allow you to use your current Terminator Stealth EFI throttle body, install a new main harness, and slave throttle body, and you are finished. This upgrade is also perfect for anyone wanting to convert their 2x4 supercharged combo over to Electronic Fuel Injection!\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2x4 Side Mount Stealth Throttle Bodies – Provide the great looks of a classic Holley 4150 Carburetor, without any of the hassles\u003c\/li\u003e\n\u003cli\u003eMultiple Color options allows for any Terminator Stealth EFI system to be upgraded to a 2x4 \u003c\/li\u003e\n\u003cli\u003ePlug and Play Main Harness provides a clean finished appearance and allows for a quick install!\u003c\/li\u003e\n\u003cli\u003eLaptop Tuning is Required with this upgrade, we recommend taking your vehicle to a certified Holley EFI Tuner\/Installer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Specifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Details:\u003c\/strong\u003e Easily convert from single to dual Terminator Stealth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade Type:\u003c\/strong\u003e Performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHarness Type:\u003c\/strong\u003e Main\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Electronic Throttle Harness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Terminator Stealth 2x4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":49715482460398,"sku":"HLY-558-121","price":531.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/9110\/6798\/files\/005ef9a1a797f32bee33b6ec6bf9098dc4529fdf.jpg?v=1791569185","url":"https:\/\/elmosspeedshop.com\/products\/holley-efi-terminator-stealth-2x4-main-harness-558-121","provider":"Elmo's Speed Shop","version":"1.0","type":"link"}