{"product_id":"holley-efi-for-use-with-holley®-hp-and-dominator-ecus-and-other-efi-systems-1","title":"Holley EFI For use with Holley® HP and Dominator ECUs and other EFI systems","description":"HP Smart Coil ignition sub-harness. Includes a pair of coil harnesses for an 8 cylinder engine. These harnesses are similar in design to factory GM LSx coil harnesses, but plug into Holley HP Smart Coils. They plug into Holley LSx plug and play main harnesses if one wants to replace factory LSx coils with Holley HP Smart Coils. If using a non-LSx main harness, purchase PN 558-307 for connectors, wiring, terminals to connect directly to a Holley HP or Dominator ECU\u003cp\u003e\u003cbr\u003eShop high-quality truck parts, auto parts, and performance accessories engineered for strength, reliability, and a precise fit. Each component we carry is carefully vetted for durability, safety, and real-world performance—meeting or exceeding OEM standards. Whether you’re replacing worn parts, upgrading suspension systems, or adding off-road equipment, Truck \u0026amp; Auto Parts Store provides trusted OEM and aftermarket brands designed to handle the demands of trucks, SUVs, and 4x4s. With expert support, fast U.S. shipping, and a commitment to customer satisfaction, you can order with confidence knowing every product delivers dependable performance on the road and off.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":51487296258264,"sku":"GVMR_558-312","price":279.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0684\/3180\/6680\/files\/large558-312_682c1577-e754-4230-a65c-f31f710b3bb5.jpg?v=1773944069","url":"https:\/\/www.truckandautopartsstore.com\/products\/holley-efi-for-use-with-holley%c2%ae-hp-and-dominator-ecus-and-other-efi-systems-1","provider":"Truck \u0026 Auto Parts Store","version":"1.0","type":"link"}