Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
FT550 4 Cylinder Universal B Expansion HarnessDescription Downloads The FuelTech Universal 4 cylinder B FT550 expansion harness compliments the Universal 4 cylinder A harness with the options to control up to 8 injectors staged sequentially, have direct connection for inbuilt gear controller as well as the additions to inputs and outputs. The harness comes with a relay with a built in fuse for power supply to the extra 4 injectors. The injectors are to be of high impedance only. The Universal 4
- The FuelTech Universal 4 cylinder B FT550 expansion harness compliments the Universal 4 cylinder A harness with the options to control up to 8 injectors staged sequentially, have direct connection for inbuilt gear controller as well as the additions to inputs and outputs. The harness comes with a relay with a built in fuse for power supply to the extra 4 injectors. The injectors are to be of high impedance only. The Universal 4 cylinder B harness has a label for each connector and the insulation is heat, moisture and oil resistant.
- FT450/FT550 4 cylinder universal harness Manual
Technical Specifications:
- Expansion Harness to FT550 sequencial injection for 4 cylinder application with 8 injectors
- Harness to be used along with FT450/550 4 CYLINDER UNIVERSAL A HARNESS
Connectors:
- FT550 (Connector B)
- 4 EV1 injectors (for high impedance injectors only)
- FT CAN B connector
- GearController sensor connector
- Extra INPUTS connector to custom wire up to 5 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) - Mating connector kit included
- Extra OUTPUTS connector to custom wire up to 8 additional outputs (i.e. boost control solenoids, transbrake solenoid, dump and lockup valves, gear shift, nitrous stages and more) – Mating connector kit included
- Relay with fuse for injectors
Attention: This Harness is only compatible with the FT550 ECU and must be used along with FT450/550 4 CYLINDER UNIVERSAL A HARNESS
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.4 ★★★★★
Based on 118 reviews
Sort
Product Reviews
★★★★★ 5
Totally love them
Color: Dark Tortoise, Size: 55-18-140
Super cute a little bigger than I expected but still adorable and trendy!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026
★★★★★ 5
Attractive Quality
Color: Dark Tortoise, Size: 55-18-140
Attractive and comfortable. May need adjusted depending on your head size. I have gotten several compliments on these frames.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 18, 2025
★★★★★ 5
Lo que necesitaba
Color: Dark Tortoise, Size: 55-18-140
Muy bonitas, me quedaron perfectas, a buen precio.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 11, 2025
★★★★★ 5
muy buena calidad
Color: Dark Tortoise, Size: 55-18-140
muy buena calidad i muy hermosos
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 27, 2025
★★★★★ 5
Hermosas
Color: Dark Tortoise, Size: 55-18-140
Hermosas, tal cual la imagen.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 11, 2025