Street. Track. Everything between.
07 3276 7829
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

Holley Coil-Near-Plug Smart Ignition Coils 556-128 Coils, EFI, Coil-Near-Plug, Ignition, Coil Pack, Male/HEI, Black, 44,000V, Rectangular, for HP, Dominator ECU, 8-piece, Set

SKU: HLY556-128

Ignition Coils

Holley Coil-Near-Plug Smart Ignition Coils 556-128 Coils, EFI, Coil-Near-Plug, Ignition, Coil Pack, Male/HEI, Black, 44,000V, Rectangular, for HP, Dominator ECU, 8-piece, Set

SKU: HLY556-128

Ignition Coils
A$1,826.55
IN STOCK! Est Ship 4-7 days. In stock at 2 locations (more than 10 available)

Added to cart

We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

Ignition Coil - Big-Wire C-N-P - E-Core - Male HEI - 44000V - HEI Style Terminal - Harness / Wire Loom - V8 - Kit


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:17:08

Data: v4.2 - Upd: 2026-11-08 06:31:44

Features

Vehicle Compatibility and Return Conditions.

This item was designed and engineered in the USA for US domestic vehicles. OBD tools, ECUs, dongles, programmers, and tuners may have limited compatibility with vehicles outside the USA due to regional differences in emission standards and system configurations. Some features and functionality may vary depending on the vehicle and location.

Some electronic tuning devices and programmers require activation, registration, or pairing with a specific vehicle’s VIN (Vehicle Identification Number). Once activated or paired, these devices may become permanently associated with that vehicle, restricting or preventing their use on another vehicle, resticting our ability to offer returns or exchanges.

Please review the product details and images to ensure it meets your needs. For clarification or assistance, feel free to contact a StreetFX agent. Note: Returns are not accepted for special order or tuning products unless the unit is deemed faulty.

(keyword: ecu)

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Holley, Hilborn, Holley Efi, Retrobright, Terminator X
StreetFX SKU hly556-128
SFX Item ID 4784164
Accounting SKU hly-556-128
Manufacturer SKU 556-128
Manufacturer UPC 090127002544
Alternative References 556-128, HLY-556-128, HOL556-128

Ignition Coils, Holley EFI, Coil-Near-Plug, Smart Ignition, Coil Pack, Male/HEI, Black, 44,000V, Rectangular, for HP, Dominator ECU, 8-piece, Set

Holley Coil-Near-Plug smart ignition coils are designed for use with Holley HP and Dominator ECUs, as well other EFI systems that can drive "smart" ignition coils. Although they are engineered for high-powered race applications, they can be used on street-driven vehicles, as well. They are available individually (includes mating connector and pins) or in kits that include everything you need to upgrade your ignition.

Additional tech specs:
• Peak voltage: 44,000 V
• Peak output: 102 Mj
• Maximum battery voltage: 17.0 V
• Kits include coils, sub-harnesses, connectors, wires, and a wiring loom

Note: Upgrading a non-coil-near-plug main harness requires HLY-558-307 Holley universal coil-on-plug harness, sold separately, to complete the installation.

Product Attributes
BrandHolley
Manufacturer's Part Number556-128
Part TypeIgnition Coils
Product LineHolley Coil-Near-Plug Smart Ignition Coils
UPC090127002544
Coil StyleCoil pack
Coil Internal ConstructionEpoxy
Coil Wire AttachmentMale/HEI
Coil ColorBlack
Maximum Voltage44,000 V
Mounting Bracket IncludedNo
Coil Wire IncludedNo
Ballast Resistor IncludedNo
Coil ShapeRectangular
Height (in.)1.860 in.
Length (in.)4.300 in.
Width (in.)3.630 in.
QuantitySold as a set of 8.
NotesDesigned for Holley HP and Dominator ECU's as well as other EFI systems that can drive smart ignition coils. Includes Holley "Big Wire" coil harness designed for Holley GM LSx style harnesses.

Compatibility

Loading compatibility information...