Australia-wide shipping on performance, 4x4 and vehicle-specific upgrades.

Holley EFI ECU Connector Kits 570-103 Weatherproof Connectors, EFI, GM LSx Engine, Main Harness Connectors, J1A/J1B Connectors, Pins, Seals, Cavity Plugs included, Kit

Holley EFI ECU Connector Kits 570-103 Weatherproof Connectors, EFI, GM LSx Engine, Main Harness Connectors, J1A/J1B Connectors, Pins, Seals, Cavity Plugs included, Kit

A$477.31
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.
View cart
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

You already have the wire and Holley EFI ECU connector kits have the rest of what you need to rewire your EFI installation. Fully terminate your own custom main harness with Holly EFI ECU connector kits.

Features include:

* Pre-terminated J1A/J1B Tyco Superseal connectors
* 20 to 22 gauge pre-terminated wires
* 16 to 18 gauge pre-terminated wires
* Cavity plugs

Part Type

Wiring Connectors and Pigtails

Data: v4.2 - Upd: 2026-10-13 18:48:00

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
570-103
Product Attributes - Part Type
Wiring Connectors and Pigtails
Product Attributes - Product Line
Holley EFI ECU Connector Kits
Product Attributes - UPC
090127061053
Product Attributes - Connector Style
Connector and pins
Product Attributes - General Connector Family
Delphi/GM
Product Attributes - Weather-Resistant
Yes
Product Attributes - Quantity
Sold as a kit.

Reference Information

Brand Name/s Holley
StreetFX SKU hly570-103
SFX Item ID 4782769
Supplier Item Code 4782769
Manufacturer SKU 570-103
Manufacturer UPC 90127061053
Alternative References HOL570-103, J1A/J1B

Compatibility

Loading compatibility information...

Keep shopping

More from Holley