GM LSX Crate Harness- Pro128

Fully terminated, labeled and wrapped LSX Harness meant for installing an LS1/LS2/LS3/LS7 into any chassis. Only 3 wires to hook up and a fuel pump lead to run**
Harness includes LSX Injector Harness [part no. 7015]
LSX Crate Harness is setup for:
  • Heat wrapped wire runs where near Headers and exhaust
  • Wideband O2 sensors
  • Knock Sensors
  • MAP Sensor
  • Coolant Temp Sensor
  • Air temp sensor
  • Stepper Idle Air Control
  • Fuel Pressure
  • Oil Pressure
  • TPS (Electronic Throttle harness sold separately)
  • Cam and Crank Sensor (LS1/LS2 standard, Specify if LS3/LS7)
  • Terminated Injector plug (Connects with stock Injector harness, New Injector harness available in either Bosch Style or EV6)
  • Terminated Coil harnesses (connects with stock coil harness, H.O. Coil harness with upgraded power leads sold separately)
  • CAN 1 Communication Lead
  • CAN 2 Communication Lead
  • 2 QTY – Chassis Ground lugs
  • Main Power Relay
  • Accessory plugs- 2 qty

** – This does not include any additional ancillary devices added to the harness (such as boost control, nitrous control, traction control, radiator pressure, exhaust back pressure sensor, wheel speed sensors, etc…)


SKU: 4275a Category:


WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles. It is the responsibility of the installer and/or user of this product to ensure compliance with all applicable local and federal laws and regulations. Please check with your local vehicle authority before purchasing, using or installing any Professional EFI Systems Inc. product.


In many states, it is unlawful to tamper with your vehicle’s emissions equipment. Professional EFI Systems Inc. products are designed and sold for sanctioned off-road/competition non-emissions controlled vehicles. Only and may never be used on a public road or highway. Using Professional EFI Systems Inc. products for street/road use on public roads or highways is prohibited by law unless a specific regulatory exemption exists. (more information can be found on for state by state details in the USA)

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