2000-2005 3100/3400 injector harness

2000–2005 GM 3100 / 3400 Injector Harness

The 2000–2005 3100 / 3400 injector harness is a direct factory-style replacement for GM’s 6-bolt intake manifold 3100 and 3400 V6 engines. Built using quality components, this harness provides a clean, reliable solution for replacing damaged factory wiring or upgrading to a simplified engine management setup.

Designed specifically for 2000–2005 3100 and 3400 engines, this injector harness is ideal for stock replacements, engine swaps, demolition derby builds, race cars, and simplified wiring applications using a tuned ECM.

Key Benefits

✔ Direct replacement for 2000–2005 GM 3100 and 3400 injector harnesses
✔ Fits all 6-bolt intake manifold 3100 and 3400 V6 engines
✔ Perfect for simplified wiring harness builds and tuned ECM applications
✔ Ideal for stock replacements, engine swaps, derby builds, and race vehicles
✔ Eliminates damaged, brittle, or corroded factory injector wiring
✔ Clean, reliable plug-and-play installation

Whether you’re replacing an aging factory injector harness or building a simplified wiring system for your 3100 or 3400-powered vehicle, this harness provides the reliability and simplicity needed to keep your engine running at its best.

Compatible Engines:

• 2000–2005 GM 3100 V6 (LG8)
• 2000–2005 GM 3400 V6 (LA1)
• All 6-bolt intake manifold equipped 3100 and 3400 applications