Ignitions and Electrical Wiring Harnesses

Fueltech

LS550 V8 Complete Harness

$799.00

SKU: F01X 2002007265

In Stock
In Stock
Ships by Sep 1
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Fueltech LS550 V8 Complete Harness is a plug-and-play solution for standalone LS engine swaps using a FuelTech FT550 or FT550LITE ECU. It is designed for GM LS Gen III/IV engines and comes pre-terminated with all necessary relays and fuses for a simple 3-wire battery hook-up and ignition power. The harness supports both 58x and 24x triggers, direct connection to LS3 ignition coils, GM-style flex fuel sensors, and dual wideband Nano connections. It is configured for both cable and drive-by-wire throttle bodies and includes a connector for a GM-style accelerator pedal.
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LS550 V8 Complete Harness

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandFueltech
Part NumberF01X 2002007265

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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