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2007-2014 Gen IV LS3 Based 4.8, 5.3, 6.0, 6.2 4L60e LS3 Standalone Harness


1 in stock (can be backordered)

Mass Air Flow *

Alternator *

MAP Sensor

Variable Valve Timing (VVT) *

Accelerator Pedal *

Show Stopper Braided Loom? *


2008-2013 Corvette 6.2, 2010-2014 Camaro, 2008-2009 Pontiac G8, 2009-2014 Vortec Truck 4.8, 5.3, 6.0, and 6.2.


Our Gen IV LS3 standalone harness is designed for installing these new GM EFI engines into your ride, whatever it may be. This swap harness is specific for 2009-2014 Gen IV 58x engines with a Drive by Wire (Electronic) Throttle Body, EV6 Injectors, and a 4L60e Transmission. This harness will work for 4.8-6.2 engines! Including the Vortec Truck Engines.

Why BP Automotive?

All of our LS3 Gen IV standalone harnesses are made with GM color coded TXL wire to meet or exceed OEM standards!  All circuits that are routed in high heat areas like the O2 sensors, knock sensors, and the crank position are covered with 1200* Fiberglass Braid. We only use OEM Delphi, Kostal, Bosch, Molex, and Yazaki connectors, terminals, and seals on our standalone harnesses. All connectors that have a Connector Position Assurance Lock on a factory harness will have them on our standalone harnesses, just like factory. Our Gen IV LS3 standalone harness also includes a sliding, snug fitting Delphi Grommet that can be positioned on the main harness line to seal your firewall.

Our Gen IV standalone swap harnesses are 5 foot long from the rear of the intake. This enables you to mount the ECM and Fuse Block in the passenger compartment! This harness is for pre-emissions vehicles or for off road use only. This harness does not have provisions for EGR, AIR, EVAP, or Rear O2 Sensors. Our LS3 Standalone harnesses are also routed for a nice, clean, simple installation that takes just minutes!

Additional Info

Our LS swap harnesses also require the removal of the VATS and emissions systems from the ECM. BP Automotive offers this service as well. This harness also requires the use of an E38 ECM, which can also be purchased from BP Automotive.


***Current Lead Time Approximately 1-3 Business Days!***






Weight 10 lbs
Dimensions 14 × 14 × 8 in
Show Stopper Braided Loom

No, Yes


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