Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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For Your Every Summer RSVP, with Code: SUMMER15
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
4.4 ★★★★★
Based on 1899 reviews
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Product Reviews
★★★★★ 5
NICE FABRIC, good sizing
Size: X-Large, Color: Black, White, Blue
These shirts are nice and long, which I appreciate being over 6' tall. I am always reluctant to buy any shirts that are not tall size, but these are long enough to solve that problem. The fabric is soft and comfortable... a good price for good shirts.
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Reviewed in the United States on September 13, 2024
★★★★★ 4
Comfortable
Size: Large, Color: Light Blue, White, Black
Nice and soft material , not like a t-shirt.
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Really great shirt. Fits great
Size: Large, Color: Black, White, Brown
Just wore one of mine and I really love it!
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Reviewed in the United States on January 16, 2026
★★★★★ 1
DId not fit well at all.
Size: Medium, Color: Black, Navy Blue, Wine Red
Baggy and .. saggy.
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Reviewed in the United States on March 14, 2026
★★★★★ 3
No las volveré a comprar
Size: Medium, Color: Black, White, Blue
Son bonitas y las tallas están bien, pero algo calurosas y después de 2 lavadas empiezan a deteriorarse
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Reviewed in the United States on June 9, 2025