• HOURS of Operation

    Open Monday - Friday 9A-5P EST

    QUESTIONS? GIVE US A CALL! 1 (765) 378-4908

    We're closed on major holidays.

  • Standard order lead time for Standalone Harnesses:

    Gen V - 4-5 weeks

    Gen 3 or Gen 4 -1-2 weeks (Several LS3 kits in stock!)

    Need it sooner? Give us a call to discuss expediting. Limited slots available.

    All other items typically ship within 3-5 business days unless specified otherwise.

  • HOURS of Operation

    Open Monday - Friday 9A-5P EST

    QUESTIONS? GIVE US A CALL! 1 (765) 378-4908

    We're closed on major holidays.

  • Standard order lead time for Standalone Harnesses:

    Gen V - 4-5 weeks

    Gen 3 or Gen 4 -1-2 weeks (Several LS3 kits in stock!)

    Need it sooner? Give us a call to discuss expediting. Limited slots available.

    All other items typically ship within 3-5 business days unless specified otherwise.

LS and LT Retrofit Specialists
Call to order today

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LT4/8L90 Harness Package (2017-2019)
LT4/8L90 Harness Package (2017-2019) - Image 1 of 0
LT4/8L90 Harness Package (2017-2019) - Image 2 of 0
LT4/8L90 Harness Package (2017-2019) - Image 1 of 0
LT4/8L90 Harness Package (2017-2019) - Image 2 of 0
LT4/8L90 Harness Package (2017-2019) - Image 1 of 0
LT4/8L90 Harness Package (2017-2019) - Image 2 of 0

LT4/8L90 Harness Package (2017-2019)

$
Choose your options:
Fuel System:
Add MAF Sensor?:
Add O2 Sensors?:
Add NSS?:
Gear Ratio/Tire(required):
Emissions Wiring(required):
Front End Drive(required):
Examples are Holley, Wegner, CVF Racing, Drive Junky, etc.
Product Code: LT4-8L-HP-2017Plus
See top for lead time
Our harness package includes the standalone wiring harness, programmed ECM, programmed TCM, and ETC pedal.

For 2017+ engine and transmissions only. These engines have 3-wire fuel rail pressure sensor on the rear!
If using GMPP engine/transmission select our 2015-2016 kit, LT4-8L-HP.
For use with pullout engines that are 2017-2019 only. Compatible with 1st generation 8L90's only.
Please give us a call for additional details!
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