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- USA
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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23
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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
4.8 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
Nice color and perfect fit.
Size: XX-Large, Color: Light Blue
Lightweight, good material, and nice color.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 1
Fit: Okay, Material: ...Sensory nightmare
Size: X-Large, Color: Black
I actually love how the shirt looks, the fit is long but I'm a pretty short girl.
One con that ruined the shirt entirely for me though is the material... It's grabby and not soft at all. I wanted a cute athletic turtleneck that would be breathable for a hot work environment. This is NOT it.. it immediately suffocates the skin. Sorry, I just didn't like it.
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Reviewed in the United States on January 31, 2026
★★★★★ 5
Super soft, runs small, long tail
High quality, super soft, good neck height, nice price, ready to go right out of the dryer, medium thick material, works well under a sport coat or sweat shirt, snug fit--runs about one size small. Length is about four inches too long. So, ideally made for tall and skinny people (I am short and thick), but going one size up works fine for me except have to tuck it in due to the length.
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Reviewed in the United States on December 26, 2025
★★★★★ 5
This shirt is a cheat code
Color: Black, White, Navy Blue, Light Gray, Size: XX-Large
These shirt fits my body so perfectly!
I’m 6’5” 310 pounds but I look 260 pounds. I sweat easily and I’m very sensitive to the material a piece of clothing is made of. This shirt is lightweight, extremely breathable, and feels like silk on the skin.
It compliments and accentuates my contours to enhance my physique. I only tried on one and I’ve already ordered 12 more hehe. This is a cheat code.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 24, 2025
★★★★★ 4
I Love the collar
Color: Black, White, Navy Blue, Wine Red, Size: Large
Great T-shirt. I can wear this casually with jeans or with a sports coat. The fabric is soft. There is no label in the collar, so you can wear it however you want.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
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