Holley Pro-Dash I/O Harness - 558-456
The 558-456 wiring kit is intended to fully populate all of the inputs and outputs for PNs 553-111 and 553-112 Pro Dashes. These can easily be inserted into the existing 34 pin dash connector. It contains loose wires and 2 and 3 conductor cable (jacketed but not shielded). The wire is 20
Legal for Non-Emissions Controlled Vehicles and Racing Use Only
Pro-Dash I/O Harness; 10 ft.-17 Loose Wires; 20 ft.-2 Conductor Cable; 40 ft.-3 Conductor Cable;
Holley is quickly becoming The New Standard In EFI! Holley?s HP ECU is standard equipment on the 2013/2014 Chevrolet COPO Camaro and Holley?s EFI throttle body powers every NASCAR Sprint Cup Series team.
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