Holley EFI Coyote Smart Coils 556-161 Ignition Coils, EFI, Coyote, Coils, Black, 50,000V, Rectangular, Connector, Pins Included, for HP, Dominator ECU, 8-piece, Ford, Set
Holley EFI Coyote Smart Coils 556-161 Ignition Coils, EFI, Coyote, Coils, Black, 50,000V, Rectangular, Connector, Pins Included, for HP, Dominator ECU, 8-piece, Ford, Set
Description
Ignition Coil Pack - Coil-On-Plug - Black - Ford Coyote - Set of 8
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:15:14
Features
Vehicle Compatibility and Return Conditions.
This item was designed and engineered in the USA for US domestic vehicles. OBD tools, ECUs, dongles, programmers, and tuners may have limited compatibility with vehicles outside the USA due to regional differences in emission standards and system configurations. Some features and functionality may vary depending on the vehicle and location.
Some electronic tuning devices and programmers require activation, registration, or pairing with a specific vehicle’s VIN (Vehicle Identification Number). Once activated or paired, these devices may become permanently associated with that vehicle, restricting or preventing their use on another vehicle, resticting our ability to offer returns or exchanges.
Please review the product details and images to ensure it meets your needs. For clarification or assistance, feel free to contact a StreetFX agent. Note: Returns are not accepted for special order or tuning products unless the unit is deemed faulty.
Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Holley, Hilborn, Holley Efi, Retrobright, Terminator X |
| StreetFX SKU | hly556-161 |
| SFX Item ID | 4782461 |
| Accounting SKU | hly-556-161 |
| Manufacturer SKU | 556-161 |
| Manufacturer UPC | 090127130018 |
| Alternative References | 556-161, HLY-556-161, HOL556-161 |
Ignition Coils, Holley EFI, Coyote, Smart Coils, Black, 50,000V, Rectangular, Connector, Pins Included, for HP, Dominator ECU, 8-piece, Ford, Set
Holley EFI Smart Coils are a bolt-in ignition upgrade for your late model HEMI or Coyote engine. Here's the difference over a stock coil: they produce more spark energy while consuming less power without sacrificing voltage output. This means you get hotter spark at the plug to burn the maximum amount of fuel in each cylinder while using less power from your electrical system. Smart Coils are available individually or in sets of 8.
• For Coyote or Hemi combinations currently using Holley EFI or Terminator X, use Smart Coil Ignition Harnesses 558-312 and Coil Extension Harnesses 558-326 for a plug-and-play solution.
• For new Holley EFI installations on Coyote engines, use with Holley EFI Coyote TI-VCT Main Harness for Smart Coils 558-122 and Smart Coil Ignition Harness 558-312 for a plug-and-play solution.
Features:
• Direct bolt-on to factory valve covers
• Same wiring pinout as other IGN-1A coils for easy plug-in upgrades (Will not work with factory wiring)
• More spark energy than any other smart coil on the market for maximum fuel burn during combustion sequence
• Low current draw means less demand on the electrical and charging system
• Built-in ignitor for compatibility with Holley EFI and many other aftermarket ECUs
• Maximum operating voltage of 18 V—for compatibility with both 12 V and 16 V electrical systems found in many performance/race applications
| Product Attributes | |
|---|---|
| Brand | Holley |
| Manufacturer's Part Number | 556-161 |
| Part Type | Ignition Coils |
| Product Line | Holley EFI Coyote Smart Coils |
| UPC | 090127130018 |
| Coil Style | Coil pack |
| Coil Color | Black |
| Maximum Voltage | 50,000 V |
| Mounting Bracket Included | No |
| Coil Wire Included | No |
| Ballast Resistor Included | No |
| Coil Shape | Rectangular |
| Quantity | Sold as a set of 8. |
| Notes | Designed for use on Ford Coyote engines with Holley HP or Dominator ECU's, as well as other EFI systems that can drive "smart" ignition coils. Direct bolt-on for factory Coyote valve covers. Will not work with factory wiring harness. |
Compatibility
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