{"product_id":"holley-efi-gen-iii-hemi-v8-injector-harness-bosch-jetronic-and-holley-injectors-558-211be","title":"Holley EFI Gen III HEMI V8 Injector Harness: Chrysler 300 (05-15) \/ Dodge Ram 1500 (03-10)","description":"\u003ch3\u003eHolley EFI Injector Harness\u003c\/h3\u003e\u003cp\u003e2005–2010 Dodge \/ Chrysler \/ Jeep 5.7L, 6.1L, 6.4L Gen III HEMI V8\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e558-211\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Holley EFI Gen III HEMI V8 Injector Harness is a precision-engineered wiring solution designed specifically for 5.7L (2009+), 6.1L (2005–2010), and 6.4L (2011+) Gen III HEMI engines. This harness is essential for anyone upgrading or swapping engines who wants to take full control of fuel injection and ignition timing through Holley EFI systems. Whether you are enhancing your vehicle with power adders like nitrous, superchargers, or turbochargers, or integrating methanol and water injection, this harness provides the reliable, OEM-quality connections needed for advanced tuning and performance optimization.\u003c\/p\u003e\u003cp\u003eHolley offers two types of injector harnesses: one with USCAR\/stock injector connectors for use with factory injectors, and another designed for Bosch and Holley (Jetronic\/Minitimer) style connectors commonly found in aftermarket larger injector setups. This versatility makes it ideal for a wide range of applications, from factory replacement to high-performance custom builds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDesigned to deliver precise control and seamless integration with Gen III HEMI engines, this injector harness offers:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatibility with 5.7L (2009+), 6.1L (2005–2010), and 6.4L (2011+) Gen III HEMI V8 engines\u003c\/li\u003e\n\u003cli\u003eSupport for Holley EFI systems to control both fuel injection and spark timing\u003c\/li\u003e\n\u003cli\u003eTwo connector options: USCAR\/stock injector connectors and Bosch\/Holley aftermarket style connectors\u003c\/li\u003e\n\u003cli\u003eCapable of tuning with power adders including nitrous oxide, superchargers, turbos, and compatible with methanol and water injection\u003c\/li\u003e\n\u003cli\u003eTXL grade copper wiring for minimal weight and excellent conductivity\u003c\/li\u003e\n\u003cli\u003eHigh-temperature protective sleeve in a compact diameter for durability and neat installation\u003c\/li\u003e\n\u003cli\u003eFactory-style terminations ensuring strong, secure, and reliable connections\u003c\/li\u003e\n\u003cli\u003eOEM-grade connectors for a precise, positive fit to factory or aftermarket injectors\u003c\/li\u003e\n\u003cli\u003eHarness routed through split-loom braid for enhanced protection and professional appearance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Holley EFI injector harness is built with high-quality TXL copper wiring, known for its excellent electrical conductivity and resistance to heat and abrasion. The wiring is encased in a high-temperature sleeve that protects against engine bay heat and mechanical wear while maintaining a slim profile for easy routing and installation. Connectors are manufactured to OEM specifications, ensuring a perfect fit with factory injectors or compatible aftermarket units. The entire harness is routed through a split-loom braid, which not only safeguards the wiring from damage but also provides a clean, professional look under the hood.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis injector harness is designed for direct fitment on Gen III HEMI V8 engines, including 5.7L (2009+), 6.1L (2005–2010), and 6.4L (2011+) variants. Installation is straightforward, requiring no modifications when used with compatible injectors and Holley EFI systems. The harness plugs directly into the engine’s injector connectors and the Holley EFI controller, simplifying the wiring process and reducing installation time. Whether you are performing an engine swap or upgrading your fuel system, this harness ensures a reliable and professional connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHolley EFI Gen III HEMI V8 Injector Harness with selected connector type (USCAR\/stock or Bosch\/Holley style)\u003c\/li\u003e\n\u003cli\u003eProtective split-loom braid covering\u003c\/li\u003e\n\u003cli\u003eOEM-grade connectors and factory-style terminations\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis injector harness is ideal for automotive enthusiasts, professional tuners, and engine builders working with Gen III HEMI V8 engines who require precise fuel and spark control. It is perfect for those performing engine swaps, upgrading to Holley EFI systems, or installing power adders such as nitrous, superchargers, or turbochargers. Additionally, it suits applications involving methanol or water injection where reliable injector control is critical.\u003c\/p\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":47315668304084,"sku":"558-211","price":172.75,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/3452_a7a54feaed8e235515fac37e44e173a8765014b8_272bfae2-5ab7-45df-ae1b-509e9aba5edd.webp?v=1766655093","url":"https:\/\/fasthemis.com\/products\/holley-efi-gen-iii-hemi-v8-injector-harness-bosch-jetronic-and-holley-injectors-558-211be","provider":"FastHemis","version":"1.0","type":"link"}