• HOURS of Operation

    Open Monday - Friday 9A-4:30P EST

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

    We're closed on major holidays.

    Closed June 7th, 2024.

  • Standard order lead time for STANDALONE WIRING HARNESSES is estimated to be 10-12 weeks from date of purchase.

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

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

Navigate to the Speartech Fuel Injection Systems homepage

LS and LT Retrofit Specialists
Call to order today

LT4/Manual Standalone Harness ONLY

LT4/Manual Standalone Harness ONLY

$0.00
Choose your options:
Fuel System:
Sending in ECM for reprogramming?(required):
Transmission:
Add MAF Sensor?:
Add O2 Sensors?:
Gear Ratio/Tire(required):
Pedal Connector(required):
Cruise Control(optional):
Emissions Wiring(required):
Front End Drive(required):
Examples are Holley, Wegner, CVF Racing, Drive Junky, etc.
Engine Year:
Product Code: LT4-M-Harness
HARNESS ONLY! Reprogramming of your modules is optional, see options below!
Images shown in picture are for representation only of the harness. Pricing is for harness only.