FAST Wiring Harness Main Dodge 5.7 - 301104Find parts that fit my vehicle

FAST offers several main harness options to accommodate most customers' needs. The XFI Main Harness is responsible for connecting your XFI ECU to sensors as well as digital dashes, EGT modules, and various optional accessories. The Main Harness also handles communication between the ECU and ignition devices. Main harnesses are available in TPI, LT-1, LS-1 through 9 (including truck/suv designs), Modern Hemi, Carburetor Conversions and even Rear-Engine Dragsters and Boats. FAST also offers Main Harnesses that come terminated on the sensor side but non-terminated on the ECU side to allow for a truly custom fit. All terminals, seals and connectors are available individually, so don't hesitate to try your hand at crafting your own custom harness from start to finish.

Whether its for a full rebuild or some standard maintenance, the proper engine components are needed to make sure your vehicle is running smooth.

When it comes to old cars or engine swaps, you may find yourself needing a new wiring harness. Sometimes your wiring harness gets old and faulty, especially on classic cars. Other times, you may need a new wiring harness with the proper adapters if you are performing an engine swap on your vehicle.

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