4.8 · 6 reviews
SKU: 558-133

LS1/6 (24x/1x) Engine Main Harness - Extended Length

$688.99
FREE delivery
Description

ABOUT THIS PRODUCT

This harness is designed for LS1/6 engines from 1997-2004. This harness interfaces with 24x crank and 1x cam sensors. Harness is a perfect fit for installers wanting to mount the any Holley EFI ECU inside of the passenger compartment where it is away from the elements and easy to access.

Product Features:
  • Plug and play with Dominator, HP, Terminator X and Terminator X Max ECU's
  • Designed for use on 24x/1x LS engines
  • Mount the ECU in a wide variety of locations such as on a roll bar or under the passenger seat
  • 22" extended length
Specifications
Brand
Holley EFI (770)
SKU
558-133
Product type
Automotive
Guides & Resources
User Guide
Returns Policy
Shipping Information

Free shipping on all orders. Most items ship next business day after your order is placed.

Returns Policy

Returns are accepted when the product is in its original, unopened container. Contact us if you have questions about your order.

View full returns policy

Customer Reviews

4.8

Based on 6 reviews

55
41
30
20
10
E
Emma S. Verified Buyer
12/14/2025

Exactly what I needed

Easy to order and arrived quickly. Product matched the listing and works great.

D
Dana H. Verified Buyer
10/02/2025

Solid purchase

Quality feels premium and it fits my needs well.

A
Alex P. Verified Buyer
01/09/2025

Fast shipping too

Impressed with the quality for the price. Will be back for more.

S
Sam T. Verified Buyer
03/22/2025

Great quality

Exactly as described. Good value and I would order again.

R
Riley N. Verified Buyer
06/08/2025

No complaints

Quick delivery and the product exceeded my expectations.

M
Maria K. Verified Buyer
08/17/2025

Would buy again

Does what it is supposed to do. Happy with this purchase.

Share your thoughts