-7%

Holley 556-128 Big Wire Coil Near Plug Smart Coil Kit

-7%

#425556128

Holley 556-128 Big Wire Coil Near Plug Smart Coil Kit

Allows your ignition system to handle 5.5+ HP per Cubic Inch
Has 44,000 Volts of peak voltage and a peak output of 102 Mj
Comes pre wired with 12ga Power and Grounds, for optimal performance

$779.95

/each

Factory Shipped

$843.95

Save $64.00

Quantity

Need Help? Call to Order

Add to a list

Select a vehicle to verify Fitment

Select Vehicle

Product Summary

44000 volts Maximum Voltage

Allows your ignition system to handle 5.5+ HP per Cubic Inch
Has 44,000 Volts of peak voltage and a peak output of 102 Mj
Comes pre wired with 12ga Power and Grounds, for optimal performance
Kit contains two Terminated Sub-Harnesses, and Eight Holley Smart Coils, 3 ft. of wiring loom for a professional appearing installation
The 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

See more details

Key Specs

MFG. Part #	556-128
Brand	Holley
Maximum Voltage	44000 volts

See more specs

Need To Know

Need help?

855.313.9176

View the Help Center

Quick and Easy Returns

Return Policy

Holley 556-128 Details

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

Charts

Installation Instructions (PDF)

Guides & Documents

Ignition Coils Installation Instructions (425556128)

CARB Warning

For race/ off road use only

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CARB warning

Holley 556-128 Specifications

KEY SPECS
MFG. Part #	556-128
Brand	Holley
Maximum Voltage	44000 volts

GENERAL
GTIN Code	090127002544
Sold in Quantity	Each

Ratings & Reviews

Be the first to write a review.

Questions & Answers

Be the first to ask a question.