Holley EFI Lightweight Dominator ECU

Marsoni

M251S

$1455.47

Get it in 3 business days with 1 day shipping. Friday, May 29

Holley EFI Lightweight Dominator ECUPN 554 114LW is a Holley EFI Dominator ECU which utilizes a lighter potting material than the standard Dominator unit (reduces total weight by 1. 8 lbs). This lightweight version is specifically intended for drag racing. It is not recommended for use in high heat conditions (under hood mounting installations), and applications with high continuous current draw. Features Designed for GM LS Gen III and IV engines equipped with GM LS3 L92 cylinder heads

Easy Shipping

Quick Dispatch:

Your Holley EFI Lightweight Dominator ECU orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your Holley EFI Lightweight Dominator ECU ships.

Need Help?
Questions about Holley EFI Lightweight Dominator ECU, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Holley EFI Lightweight Dominator ECU in your area.

Get Shipping Estimates

Country Zip/Postal Code

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

I needed a slimmer sponge caddy, that could still hold my bottle brushes & extra sponges because my sink ledge isn't that wide... The rest of the ones I found were about 5 in, I needed this one that was only 3 in deep... Pitch perfectly and holds quite a bit. It's so worth it even if it rusts I'll buy another one! It looks great, study, drains water good, and the height is enough to hold my bottle brushes without them falling over. Does exactly what it's supposed to 😘

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on February 7, 2026