GM 58X EFI HARNESS KIT - 558-501 2WD 7 V8 2009 GMC Yukon

7 V8 2009 GMC Yukon XL 1500 SLE 364/6 V8 2006 - 2009 Dodge Charger R/T 345/5

Expansion is guaranteed only to 1/4 inch over the original neck size

154 Jet Size

1-5/8” diameter primary tubes are used for increased exhaust flow increasing performance and improving throttle response

2011-2013 Ford F-350 Super Duty 379 CID

GM 58X EFI HARNESS KIT - 558-501 2WD 7 V8 2009 GMC YukonOverview: An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Our Holley EFI Harness Kit comes complete with the main harness, power harness and injector harness to support your primary system! Features: Harness Kit Includes; Main Power Harness, LS2 Main Harness & LSX Injector harness Simple Installation Works with HP or Dominator ECU's