Installation Time
(approx) 30 Minutes
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
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Features, Description, Q&A, Specs & Installation
Ignition Upgrade. The Holley EFI Smart Coil for Holley EFI or Terminator X; Single is a direct replacement ignition coil designed to deliver enhanced spark energy while lowering electrical system demand. This coil elevates combustion efficiency by providing hotter sparks for better fuel burn, ideal for late model HEMI engines. It is optimized for use with Holley EFI management systems, ensuring seamless integration and improved engine performance.
Construction and Appearance. Constructed using high-quality materials, this ignition coil features a durable black finish designed to withstand the rigors of engine bay environments. The coil is engineered for direct bolt-on installation to factory valve covers, maintaining original equipment aesthetics and fitment precision. It includes mounting hardware but does not come with a mounting bracket or coil wire.
Installation. Installation is straightforward with a bolt-on design that aligns with factory valve covers, requiring no modifications or drilling. The coil’s wiring pinout matches other IGN-1A coils, facilitating straightforward upgrades with compatible harnesses for a plug-and-play experience.
Application. Specifically designed to fit 2008-2023 5.7L and 6.4L HEMI Challenger engines. This coil is not compatible with factory wiring setups without the appropriate ignition harnesses and coil extension harnesses.
Holley EFI 556-162
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation Info
Installation Time
(approx) 30 Minutes
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
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