Description
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
- Black, Single Coil
- Legal For Sale And Use On Uncontrolled (Non-Emissions Controlled) Vehicles
- Produces More Spark Energy While Consuming Less Power
- Hotter Spark At The Plug For Maximum Fuel Burn
- Plug And Play With Holley EFI Or Terminator X Using Smart Coil Ignition Harnesses And Coil Extension Harnesses
- Direct Bolt-On To Factory Valve Covers
- Same Wiring Pinout As Other IGN-1A Coils For Easy Plugin Upgrades
- Low Current Draw Reduces Demand On Electrical And Charging System
- Built-In Ignitor For Compatibility With Holley EFI And Many Aftermarket ECUs
- Maximum Operating Voltage Of 18 Volts To Support 12 And 16 Volt Electrical Systems
- Includes Mounting Hardware But No Mounting Bracket Or Coil Wire
- Performance Grade Ignition Coil
- Fits 08-23 5.7L HEMI, 6.4L HEMI Challenger






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