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USA
- USA
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- USA
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Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
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Description
Holley Coil-Near-Plug Smart Ignition Coils 556-128KIT, BIG WIRE 8 CYLINDER SMART COIL KIT Do you need precision control over your ignition system? Would your combination benefit from Individual Cylinder Timing Control? Are you experiencing spark issues with your Stock Coils? Are you wanting to convert your Turbocharged Big Block Monstrosity to Coil Near Plug?! Problem solved, introducing the Holley EFI Big Wire C N P Kit containing everything you need to upgrade your ignition system to handle 5. 5+
KIT, BIG WIRE 8 CYLINDER SMART COIL KIT
Do you need precision control over your ignition system? Would your combination benefit from Individual Cylinder Timing Control? Are you experiencing spark issues with your Stock Coils? Are you wanting to convert your Turbocharged Big Block Monstrosity to Coil-Near-Plug?! Problem solved, introducing the Holley EFI Big-Wire C-N-P Kit containing everything you need to upgrade your ignition system to handle 5.5+ HP per Cubic Inch
Features:
- “Big Wire” Sub Harness- Pre wired with 12ga Power and Grounds, for optimal performance!
- Peak Voltage – 44,000 Volts
- Peak Output – 102 Mj
- Maximum Battery Voltage 17.0 Volts
- Upgrading a Non C-N-P Main Harness requires the Holley Universal Coil-On-Plug Harness, P/N 558-307 to complete the installation!
- Contains two Terminated Sub-Harnesses, and Eight Holley Smart Coils, 3 ft. of wiring loom for a professional appearing installation!
- Sub Harness features Fully Terminated Coil Connectors, a 7 Pin Metripak Connector used on several Holley EFI C-N-P Main Harnesses, and 3 loose wires for a quick installation!
Application
-
Universal
Specs
| Brand | Holley EFI |
|---|---|
| Emission Code | 4 |
| Height | 1.86" |
| Ignition Wire Terminal Type | HEI Style Tower |
| Mounting Bolt Pattern | 74mm |
| Overall Length | 4.3" |
| Product Type | Distrutorless Ignition - DIS - smart coil |
| Width | 3.6" |
| Part Number | 556-128 |
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
4.3 ★★★★★
Based on 104 reviews
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Product Reviews
★★★★★ 5
Great shirt!
Size: X-Large, Color: Purple Buffalo
Love it! Light, stretchy, and breathable! The shirt itself is so nice to wear, I’ll probably buy other patterns!
I bought a dozen of these in different sizes for a golf tournament. Sizes ran true. Nice athletic fit!
This pattern made us just the right amount of obnoxious out on the course! Great vibrant violet color from afar, cool pattern up close!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
★★★★★ 5
Shoe
Size: 10-11 Women/9-10 Men, Color: 1a-stripe Black-2
These beach shoes have been super comfortable and practical. They fit well, are lightweight, and the sole has great grip, even on wet surfaces. I used them at the beach and by the pool, and they protected my feet really well from hot sand and rocks. They also dry quickly and are easy to carry.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
★★★★★ 5
Good, quick, easy water shoes.
Size: 8-9 Women/7-8 Men, Color: 1a-stripe Black-2
For the price? Great little water shoes for a small body of water! Size is accurate, material is breathable, the shoes are lightweight and no cuts/scrapes when out of the water noted. Good buy!
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Comfortable to Wear
Size: 11.5-12.5 Women/10.5-11.5 Men, Color: 2c-1172 Watermarks
These are easy to put on and extremely comfortable. The material seems thicker than my old water shoes, so should last longer. The soles provide good grip, even in a swimming pool, which makes them ideal for use in activities like water aerobics. The color flashes on the shoes make them interesting and more appealing than plain black. Highly recommended
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Reviewed in the United States on May 24, 2026
★★★★★ 4
Comfy Pool Shoes
Size: 11.5-12.5 Women/10.5-11.5 Men, Color: 1a-stripe Black-2
I’ve had these pool shoes a couple of months now. Here are my thoughts.
Pros: Inexpensive, comfortable, fit well, dry fast, protect feet for you pool joggers.
Cons: The inner sole gets loose, the material around the toes breaks down.
Bottom line: For the money they’re worth it. Just don’t expect them to last a long time.
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Reviewed in the United States on February 4, 2026
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