FAST 301104 XFI Main Wiring Harness for Chrysler 5.7L 6.1L 6.4L HEMI
- Regular price
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$507.95 - Regular price
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- Sale price
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$507.95
In Stock: 24
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Product Specification:
SKU:FST301104
MPN: 301104
UPC: 036584122753
Weight: 5.0 lb
Inventory: 24
Type: Wiring Harnesses
Vehicle Fitment
- 2003-2026 Chrysler / Dodge / Jeep / Ram (Gen III 5.7L HEMI V8)
- 2005-2010 Chrysler / Dodge / Jeep (Gen III 6.1L HEMI V8)
- 2011-2026 Chrysler / Dodge / Jeep / Ram (Gen III 6.4L HEMI V8)
Fitment Notes
- For use with FAST XFI EFI systems only -- not a factory wiring replacement
- Designed for Mopar-style OEM sensors -- not compatible with non-Mopar sensor connectors
- Does not include sensors
- Race and off-road use only -- not emissions legal for street use in California
- Sold as a kit
Features
- Connects XFI ECU to engine sensors, ignition, digital dashes, EGT modules, and accessories
- Pre-terminated ends with environmentally sealed Weather Pack connectors
- Clearly labeled wires throughout for simplified installation
- Direct plug-in to OEM MAP, TPS, coolant temp, and air temp sensor connectors
- Weather Pack connectors resist extreme temps, moisture, and engine bay fluids
Specifications
- Application: FAST XFI EFI system main harness
- Engine compatibility: Chrysler Gen III 5.7L, 6.1L, 6.4L HEMI V8
- Connector type: Weather Pack -- pre-terminated, environmentally sealed
- Fuse block included: No
- Harness length: Standard
- Package dimensions: 15.25" L x 15" W x 4.75" H
- Shipping weight: 3.5 lbs.
Included Components
- 1x XFI main wiring harness (pre-terminated, labeled)
Product Description
The FAST 301104 is the main wiring harness for FAST XFI EFI systems installed on Chrysler Gen III HEMI engines -- the 5.7L (2003-present), 6.1L (2005-2010), and 6.4L (2011-present). It connects the XFI ECU to the engine's OEM MAP sensor, throttle position sensor, coolant temp sensor, and air temp sensor using Mopar-style connectors, and also handles communication between the ECU and ignition devices, digital dashes, EGT modules, and optional accessories.
All wires are clearly labeled and every end comes pre-terminated with Weather Pack connectors -- the same environmentally sealed connectors used by OEM automotive, construction, and farm equipment manufacturers for their ability to withstand extreme temperatures, moisture, and engine bay chemicals. For use with FAST XFI EFI systems only -- not a factory harness replacement. Does not include sensors. Race and off-road use only -- not California emissions legal for street use.



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