SKU: 44576480466

FUELTECH LS550 V8 COMPLETE HARNESS

Sale price$400.93 Regular price$445.48
Save 10%

Pay in installments of $111.37 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

FUELTECH LS550 V8 COMPLETE HARNESSThe FuelTech LS550 V8 complete plug and play harness is the best fit for a standalone LS swap utilizing the FuelTech FT550 or FT550LITE ECU and GM LS engine. It comes pre terminated to suit an LS engine with all relays and fuses for a simple 3 wire battery hook up and ignition power. Ready for both 58x and 24x triggers with provision for direct connection to LS3 style ignition coils, GM style flex fuel sensor and dual wideband Nano connection. The

The FuelTech LS550 V8 complete plug and play harness is the best fit for a standalone LS swap utilizing the FuelTech FT550 or FT550LITE ECU and GM LS engine. It comes pre-terminated to suit an LS engine with all relays and fuses for a simple 3 wire battery hook up and ignition power. Ready for both 58x and 24x triggers with provision for direct connection to LS3 style ignition coils, GM style flex fuel sensor and dual wideband Nano connection. The LS550 harness is set up for both cable and drive-by-wire based throttle, with the connector for a GM style accelerator pedal on the cabin side of the harness. Each connector has its own label and the connectors and harness insulation is heat, moisture and oil resistant.

LS550 V8 COMPLETE HARNESS FEATURES


      • LS550 V8 LS Complete Harness is a harness designed to install a FuelTech FT550 on a Chevrolet LS engine when replacing the stock ECU and harness completely, perfect for LS swap anything!
      • The harness has all the components needed to make a plug and play installation on a LS engine. It has all the relays and fuses needed for the system on a standard setup, a firewall grommet to hold and seal the harness and every connector has its own label.
      • Completely wired for 8 sequential EV1 injectors directly (does not need injector sub-harness) compatible with high impedance (saturated) injectors and completed wired for use of 2 of the FuelTech Peak and Hold Driver when using low impedance (peak and hold) injectors.
      • Compatible with OEM LS coils already wired in fully sequential (does not require coil sub harness).
      • Compatible with either OEM GM pedal and electronic throttle body from the LS2, LS3, LS7, LSA, LS9 and similar, as well compatible with cable throttle body when converted from electronic to mechanical throttle.
      • It has most of the engine sensors pre-wired: Electronic Pedal, Electronic Throttle body, TPS, 24x or 58x crank trigger, front and rear cam sync (1 and 4 tooth compatible), flex fuel sensor, fuel pressure, oil pressure, coolant and intake air temperature and more through extra inputs available for custom wiring.
      • Flex Fuel Ready with connector for the Continental Flex Fuel Sensor
      • This harness is setup for two FuelTech WB-o2 Nano o2 conditioners and two Bosch LSU 4.2 o2 sensors.
      • There is an INPUTS connector to custom wire up to 6 additional input channels for the engine or chassis datalogging (i.e. driveshaft RPM, transbrake button, suspension travel sensors, input shaft RPM, staging button and much more)
      • There is an EXTRA OUTPUTS connector to custom wire up to 8 additional outputs like wastegate boost control solenoids, transbrake solenoid, dump and lockup valves, gear shift, nitrous stages and more
      • Come with three 40A relays and fuses: Main Relay powers the ECU,
      • WB-O2 Nano and all the sensors. The second relay powers the Peak and Hold drivers and the injectors and the third relay powers the ignition coils.
      • Weight for LS550 Complete harness: 8 lbs 3oz

CONTENTS OF PACKAGING

  • 1 LS550 V8 Complete Harness
  • 2 Peak & Hold Jumper Harnesses
  • 1 LS550 8-Way connector kit
  • 1 LS550 10-Way connector kit
  • 1 LS550 12-way connector kit
  • 1 Operation and installation guide
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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
SKU: 44576480466

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.1 ★★★★★
Based on 16 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
V
Verified Purchase
Virginia Ramirez
Pawtucket, US
★★★★★ 5
Best plug if you are traveling to France or Europe
Style: Type C/G/A-Most Countries-3FT
If you ever need a European plug, this is the one to get. I took it with me to France for a whole month and it was a life saver. I was able to plug all my electronics and also have no issues with the conversion of watts. Now that I have it I take it with me anytime I travel to Europe.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2026
Q
Verified Purchase
Queencfm
Bozeman, US
★★★★★ 5
Perfect, travel accessory
Style: Type C/G/A-Most Countries-3FT, Style: Type C/G/A-Most Countries-3FT
Perfect travel item! This was so useful two of us were able to charge our phone at the same time and our extra battery pack. Perfect travel item should be a staple.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
S
Verified Purchase
Suzy QZ
Massapequa, US
★★★★★ 5
Great Buy
Style: Type C/G/A-Most Countries-3FT
Bought for trip to Italy. The long cord worked great as I had several things to charge and the side tables weren't big enough. This reached the floor and nothing was falling off tables. The plug fit snugly in the socket which was key as they tend to be loose there. Don't take your own hair dryer or curling iron, they burn out from the amperage there.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
M
Verified Purchase
mhopper
Dallas, US
★★★★★ 4
Good product
Style: Type C/G/A-Most Countries-3FT
A little bulky but worked great for my trip to Italy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
S
Verified Purchase
Sunshine4Rae
San Leandro, US
★★★★★ 5
Fantastic adapter for international travel
Style: Type C/G/A-Most Countries-3FT
This adapter worked as intended when needing to charge devices in Europe. The adapter was easy to attach to the plug and the cord length came in handy for sockets that were in hard to reach locations. The only thing is it does take up some space in luggage, so make sure to account for that. Would definitely recommend for international travel.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026

recommand products