Holley
Holley EFI ECU Connector Kits - 570103
Holley EFI ECU Connector Kits - 570103
Regular price
$220.99 USD
Regular price
Sale price
$220.99 USD
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- Ships direct from the brand or supplier
- Tracking emailed when it ships
- Free fitment check before you order
EFI ECU Connector Kits from Holley. The part number and specifications are listed below. Many electrical faults are a bad connection rather than a failed part, so check grounds and connectors first.
Quick facts
- Brand: Holley
- Part type: Electrical part
- Part number: 570103
Listed fitment
- Delphi/GM: Specifically designed for GM LSx engines, ensuring perfect fitment and compatibility with your vehicle.
Tip: Disconnect the battery before electrical work and check grounds first.

Holley electrical part: what to know
Many electrical faults are a bad connection rather than a failed part, so check grounds and connectors first.
Fitment notes
- Specs, lead time and warranty come from Holley and can change. The details above this guide are the latest we have.
Not sure it fits? Message us your vehicle details and we'll double-check fitment before you buy.
Ask about fitmentWhat else to plan for
- Fuses and relays. Cheap to keep spares.
More for your car: Batteries & electrical
Questions about electrical part
Will this fit my car?
Check the title and details above for the vehicles and part number it is listed for. If you are not sure, contact us with your year, make, model, engine and trim and we will confirm fitment before you order.
How do I find an electrical fault?
Start with fuses, grounds and connectors, then test with a multimeter.
Where do specs and warranty details come from?
From Holley. Each brand sets its own specs, lead times and warranty terms, and they can change. The product details above are the latest we have.
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