Holley Efi Ls Main Harness - 558-133
These harnesses are designed to fit most 24x and 58x LS engines, from 1997-2012. They are a perfect fit for installers wanting to mount the any Holley EFI ECU inside of the passenger compartment where it is away from the elements, and easy to access.
Plug And Play With Dominator/Hp/Terminator X And Terminator X Max ECUs; Designed For Use On 24x/1x And 58x/4x LS Engines; 22 in. Longer Than Previous Harnesses; Relay Breakout Is Also Moved Back From 19 in. To 43 in. From The ECU Connector; Extended Length Allows You To Mount The ECU In A Wide Variety Of Locations
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.
