Holley EFI LS (58X/4X) Engine Main Harness Extended for HP EFI/Dominator EFI 558-134 LS2/3/7+ (58x/4x) Engine Main Harness for HP EFI & Dominator EFI These harnesses are designed to fit most 24x and 58x LS engines, from 1997-2012. They are a...

Holley EFI LS (58X/4X) Engine Main Harness for HP EFI/Dominator EFI 558-103 LS2/3/7+ (58x/4x) Engine Main Harness for HP EFI & Dominator EFI This harness has been designed to interface with 58x crank and 4x cam sensors. These engines are commonly...

Holley HP EFI & Dominator EFI LS1/6 (24X/1X) Engine Main Harness, Extended Length 558-133 This harness is designed for LS1/6 Engines, from 1997-2004. This harness interfaces with 24x Crank and 1x Cam sensors. Plug and play with Dominator, HP,...

Holley EFI LSX Injector Harness for EV6 Injectors HP EFI/Dominator/Terminator X 558-201 LSx Injector Harness for HP EFI, Dominator EFI and Terminator X.

Holley EFI LS1/LS6 (24X/1X) Engine Main Harness for HP EFI/Dominator EFI 558-102 This harness is designed for LS1/6 Engines, from 1997-2004. This harness interfaces with 24x Crank and 1x Cam sensors.