SKU: 44576480466

FUELTECH LS550 V8 COMPLETE HARNESS

Sale price$400.93 Regular price$445.48
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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

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Kim S
San Leandro, US
★★★★★ 5
Great buy!!!
Size: 11, Color: Dark Brown
Very happy with shoes, color was good. Size was perfect. Comfort was great!!!
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Reviewed in the United States on April 21, 2026
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Richard
Birmingham, US
★★★★★ 3
Ok. Not great
Size: 8.5 Wide, Color: Brown
They look great but not that comfortable
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Reviewed in the United States on May 6, 2026
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Kindle Customer
Los Angeles, US
★★★★★ 5
Soft, fluffy, wash and dry perfectly, snuggly, comfy--GET A FEW! You will love them!
Color: 01 - White, Size: Twin (60" X 80")
This is my third purchase of this item! I love these blankets--soft, fluffy, snuggly, but lightweight. They keep you warm but not overly so--I miss these when I travel because hotels just don;t have anything even close to these soft blankets! I have them in the MBR, Guest BR and an extra. I also bought one recently to line the seat of a wagon for toddlers who will be riding along with the bridal party--will keep them comfy but since it isnt bulky it won't interfere with the wagon appearance. The ones I have wash up very nicely and I do put them in the dryer on low and they come up nice and fluffy--the price is fantastic too! For storing themm, they take almost no room at all! Get a couple-your sleep and sweet dreams will thank you!
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Reviewed in the United States on May 18, 2026
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Pinky1stState
Phoenix, US
★★★★★ 5
After 8 years, still a great blanket! Holds up to pets too!
Color: Grey, Size: King (108" x 90")
This is a lovely king-size blanket. It is lightweight comfort for chilly days. It can be used with other blankets for additional warmth as needed. I have two older Bedsure king-size blankets (teal and camel) that are 8 years old now and they have maintained their color. I used them for bedspreads for queen-size beds that cover well. They do have some slight wear but are still in good shape - holding up to cats and dogs. The latest purchase are two grey king-size blankets that I am using to cover an old, two-cushion style couch. I needed the extra width for tucking in the cushions and completely covering the arms, sides, and back of the couch. The new look and comfort is also holding up to the 10-year old dog who likes to nap on the couch occasionally. I have found that these blankets do well with spot cleaning as needed. Pet hair does not seem to cling to these blankets and as needed, I use a lint brush. When washing, I wash them on gentle cycle with regular detergent. I use a little vinegar in the rinse cycle. I hang them outside to dry and they dry quickly. On a rare occasion I use the dryer and when I do, there is very little lint from blanket. With the new grey blankets, I followed the gentle reminder noted on the plastic bag and - took the blanket directly from the bag (there was no smell) and put it in the dryer on low heat (about 15 to 20 minutes) and it came out full looking and fluffy soft (luxurious feeling actually). I really like these blankets and recommend them highly to friends and family. I hope this is helpful to you.
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Reviewed in the United States on April 15, 2026
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Nelli Peftiieva
Cuba, US
★★★★★ 5
Very soft and cozy
Color: Grey, Size: Queen (90" X 90")
I bought this for the bed, but the second it arrived my husband claimed it. It is so incredibly soft and cozy, but lightweight enough that you don't overheat. The grey color looks great with our decor, and I love that it doesn't get static- like other fleece blankets. It also washed really well and didn't shed at all.
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Reviewed in the United States on May 21, 2026

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