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- USA
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Ships within 48 hours · Estimated delivery Aug 1 - Aug 6
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Description
HOLLEY EFI GEN III HEMI SMART COILS 556-163Black, 8 Pack Features: Direct bolt on to factory valve covers1 Same wiring pinout as other IGN 1A coils for easy plugin upgrades (Will not work with factory wiring)2 More spark energy than any other smart coil on the market for maximum fuel burn during combustion sequence3 Low current draw means less demand on the electrical and charging system4 Built in ignitor for compatibility with Holley EFI and many other aftermarket ECU? s5 Maximum operating
Black, 8-Pack
Features:
- Direct bolt-on to factory valve covers1
- Same wiring pinout as other IGN-1A coils for easy plugin upgrades (Will not work with factory wiring)2
- More spark energy than any other smart coil on the market for maximum fuel burn during combustion sequence3
- Low current draw means less demand on the electrical and charging system4
- Built-in ignitor for compatibility with Holley EFI and many other aftermarket ECU?s5
- Maximum operating voltage of 18 volts ? for compatibility with both 12 volt and 16 volt electrical systems found in many performance/race applications6
Specs:
| Brand | Holley EFI |
|---|---|
| Category Filter | Ignition |
| Clearance Category | Ignition |
| Coil Type | Holley SmartCoil |
| Color | Black |
| Emission Code | 3 |
| Grade Type | Performance |
| Product Type | Coil |
| Warning | California Proposition 65 |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
iPad protector
Great iPad cases
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
★★★★★ 5
Bulky but beautiful
Color: Tea Brown
Great for when you need a keyboard, but slightly bulky. Overall, works well, looks luxurious.
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Reviewed in the United States on November 13, 2025
★★★★★ 5
Good product and great price
Color: Ocean Marble
Excellent product and great price. Definitely that fulfills my expectations
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Reviewed in the United States on May 30, 2026
★★★★★ 3
No instructions
Color: Gold texture
It looks nice and might work well butt there’s no instructions with it. I have a lot of crap going on in my life right now and have had no time to google how to connect this with my computer. Why no instructions????
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Reviewed in the United States on January 30, 2026
★★★★★ 5
Good quality
The only thing that I would improve is that when it is open it holds in the back with magnets. So it doesn’t separates from the back
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 17, 2024
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