SALE Quick view Details Holley Holley 558-321 Coil Harness Pair for LS Engines 4.8L 5.3L 6.0L 6.2L 7.0L MSRP: Was: $204.95 Now: $184.45 Out of stock Compare
SALE Quick view Details Holley Holley 558-416 LS1 Harness to LS3 MAP Sensor Adapter MSRP: Was: $41.99 Now: $37.10 Out of stock Compare
SALE Quick view Details Holley Holley 558-406 GM LS Drive-By-Wire Harness for 6-Pin Throttle Body and Pedal 2005+ Car 2007+ Truck/SUV 4.8L 5.3L 6.0L 6.2L MSRP: Was: $255.95 Now: $230.35 Add to Cart Compare
Quick view Details Holley Holley J4 Auxiliary Harness for Dominator EFI 558-404 MSRP: Now: $229.95 Add to Cart Compare SALE Quick view Details Holley Holley J3 Auxiliary Harness for Dominator EFI 558-403 MSRP: Was: $179.95 Now: $161.95 Add to Cart Compare SALE Quick view Details Holley Holley J2B Auxiliary Output Harness for Dominator EFI 558-402 MSRP: Was: $179.95 Now: $161.95 Add to Cart Compare SALE Quick view Details Holley Holley J2A Auxiliary Input Harness for Dominator EFI 558-401 MSRP: Was: $233.95 Now: $210.55 Add to Cart Compare SALE Quick view Details Holley Holley 558-400 Auxiliary Input/Output Harness for Terminator X, Dominator and HP EFI Systems MSRP: Was: $130.95 Now: $117.85 Out of stock Compare SALE Quick view Holley Holley 558-321 Coil Harness Pair for LS Engines 4.8L 5.3L 6.0L 6.2L 7.0L Holley 558-321 LS Coil Harness Pair Fits all LS Based 4.8L 5.3L 6.0L 6.2L 7.0L Engines Except LS1 and LS6 Are you tired of scouring the junkyard for stock ls coil sub harnesses? Introducing the new... MSRP: Was: $204.95 Now: $184.45 Out of stock Compare SALE Quick view Holley Holley 558-416 LS1 Harness to LS3 MAP Sensor Adapter Holley 558-416 MAP Sensor Adapter Harness Adapts LS1/LS2 and Early LS Truck Harness to LS3/LS9/Late LS Truck MAP Sensor Holley EFI LS main harnesses have a MAP sensor connecter designed for use... MSRP: Was: $41.99 Now: $37.10 Out of stock Compare SALE Quick view Holley Holley 558-406 GM LS Drive-By-Wire Harness for 6-Pin Throttle Body and Pedal 2005+ Car 2007+ Truck/SUV 4.8L 5.3L 6.0L 6.2L Holley 558-406 GM LS Drive-By-Wire DBW Throttle Harness For use with Dominator and Terminator X Max EFI Systems Fits 6-Pin Throttle Body and 6-Pin Pedal found in 2005-2013 Car and 2007-2013... MSRP: Was: $255.95 Now: $230.35 Add to Cart Compare Quick view Holley Holley J4 Auxiliary Harness for Dominator EFI 558-404 Holley J4 Auxiliary Harness for Dominator EFI 558-404 Holley part number 558-404 includes a J4 connector for Dominator ECU, along with 26 generous length wires with ECU terminal pins pre-crimped... MSRP: Now: $229.95 Add to Cart Compare SALE Quick view Holley Holley J3 Auxiliary Harness for Dominator EFI 558-403 Holley J3 Auxiliary Harness for Dominator EFI 558-403 Holley part number 558-403 includes a J3 connector for Dominator ECU, along with generous length wires with ECU terminal pins pre-crimped onto... MSRP: Was: $179.95 Now: $161.95 Add to Cart Compare SALE Quick view Holley Holley J2B Auxiliary Output Harness for Dominator EFI 558-402 Holley J2B Auxiliary Harness for Dominator EFI 558-402 Holley part number 558-402 includes a J2B connector for Dominator ECU, along with generous length wires with ECU terminal pins pre-crimped onto... MSRP: Was: $179.95 Now: $161.95 Add to Cart Compare SALE Quick view Holley Holley J2A Auxiliary Input Harness for Dominator EFI 558-401 Holley J2A Auxiliary Harness for Dominator EFI 558-401 Holley part number 558-401 includes a J2A connector for Dominator ECU, along with generous length wires with ECU terminal pins pre-crimped onto... MSRP: Was: $233.95 Now: $210.55 Add to Cart Compare SALE Quick view Holley Holley 558-400 Auxiliary Input/Output Harness for Terminator X, Dominator and HP EFI Systems Holley 558-400 Auxiliary Input/Output Harness Compatible with Holley Terminator X, HP or Dominator EFI systems This unterminated harness connects to the (8) pin Metri-Pack Input/Output connector... MSRP: Was: $130.95 Now: $117.85 Out of stock Compare Previous 1 2 3 4 Previous 1 2 3 4 Compare Selected
SALE Quick view Details Holley Holley J3 Auxiliary Harness for Dominator EFI 558-403 MSRP: Was: $179.95 Now: $161.95 Add to Cart Compare
SALE Quick view Details Holley Holley J2B Auxiliary Output Harness for Dominator EFI 558-402 MSRP: Was: $179.95 Now: $161.95 Add to Cart Compare
SALE Quick view Details Holley Holley J2A Auxiliary Input Harness for Dominator EFI 558-401 MSRP: Was: $233.95 Now: $210.55 Add to Cart Compare
SALE Quick view Details Holley Holley 558-400 Auxiliary Input/Output Harness for Terminator X, Dominator and HP EFI Systems MSRP: Was: $130.95 Now: $117.85 Out of stock Compare
SALE Quick view Holley Holley 558-321 Coil Harness Pair for LS Engines 4.8L 5.3L 6.0L 6.2L 7.0L Holley 558-321 LS Coil Harness Pair Fits all LS Based 4.8L 5.3L 6.0L 6.2L 7.0L Engines Except LS1 and LS6 Are you tired of scouring the junkyard for stock ls coil sub harnesses? Introducing the new... MSRP: Was: $204.95 Now: $184.45 Out of stock Compare
SALE Quick view Holley Holley 558-416 LS1 Harness to LS3 MAP Sensor Adapter Holley 558-416 MAP Sensor Adapter Harness Adapts LS1/LS2 and Early LS Truck Harness to LS3/LS9/Late LS Truck MAP Sensor Holley EFI LS main harnesses have a MAP sensor connecter designed for use... MSRP: Was: $41.99 Now: $37.10 Out of stock Compare
SALE Quick view Holley Holley 558-406 GM LS Drive-By-Wire Harness for 6-Pin Throttle Body and Pedal 2005+ Car 2007+ Truck/SUV 4.8L 5.3L 6.0L 6.2L Holley 558-406 GM LS Drive-By-Wire DBW Throttle Harness For use with Dominator and Terminator X Max EFI Systems Fits 6-Pin Throttle Body and 6-Pin Pedal found in 2005-2013 Car and 2007-2013... MSRP: Was: $255.95 Now: $230.35 Add to Cart Compare
Quick view Holley Holley J4 Auxiliary Harness for Dominator EFI 558-404 Holley J4 Auxiliary Harness for Dominator EFI 558-404 Holley part number 558-404 includes a J4 connector for Dominator ECU, along with 26 generous length wires with ECU terminal pins pre-crimped... MSRP: Now: $229.95 Add to Cart Compare SALE Quick view Holley Holley J3 Auxiliary Harness for Dominator EFI 558-403 Holley J3 Auxiliary Harness for Dominator EFI 558-403 Holley part number 558-403 includes a J3 connector for Dominator ECU, along with generous length wires with ECU terminal pins pre-crimped onto... MSRP: Was: $179.95 Now: $161.95 Add to Cart Compare SALE Quick view Holley Holley J2B Auxiliary Output Harness for Dominator EFI 558-402 Holley J2B Auxiliary Harness for Dominator EFI 558-402 Holley part number 558-402 includes a J2B connector for Dominator ECU, along with generous length wires with ECU terminal pins pre-crimped onto... MSRP: Was: $179.95 Now: $161.95 Add to Cart Compare SALE Quick view Holley Holley J2A Auxiliary Input Harness for Dominator EFI 558-401 Holley J2A Auxiliary Harness for Dominator EFI 558-401 Holley part number 558-401 includes a J2A connector for Dominator ECU, along with generous length wires with ECU terminal pins pre-crimped onto... MSRP: Was: $233.95 Now: $210.55 Add to Cart Compare SALE Quick view Holley Holley 558-400 Auxiliary Input/Output Harness for Terminator X, Dominator and HP EFI Systems Holley 558-400 Auxiliary Input/Output Harness Compatible with Holley Terminator X, HP or Dominator EFI systems This unterminated harness connects to the (8) pin Metri-Pack Input/Output connector... MSRP: Was: $130.95 Now: $117.85 Out of stock Compare Previous 1 2 3 4 Previous 1 2 3 4 Compare Selected
SALE Quick view Holley Holley J3 Auxiliary Harness for Dominator EFI 558-403 Holley J3 Auxiliary Harness for Dominator EFI 558-403 Holley part number 558-403 includes a J3 connector for Dominator ECU, along with generous length wires with ECU terminal pins pre-crimped onto... MSRP: Was: $179.95 Now: $161.95 Add to Cart Compare
SALE Quick view Holley Holley J2B Auxiliary Output Harness for Dominator EFI 558-402 Holley J2B Auxiliary Harness for Dominator EFI 558-402 Holley part number 558-402 includes a J2B connector for Dominator ECU, along with generous length wires with ECU terminal pins pre-crimped onto... MSRP: Was: $179.95 Now: $161.95 Add to Cart Compare
SALE Quick view Holley Holley J2A Auxiliary Input Harness for Dominator EFI 558-401 Holley J2A Auxiliary Harness for Dominator EFI 558-401 Holley part number 558-401 includes a J2A connector for Dominator ECU, along with generous length wires with ECU terminal pins pre-crimped onto... MSRP: Was: $233.95 Now: $210.55 Add to Cart Compare
SALE Quick view Holley Holley 558-400 Auxiliary Input/Output Harness for Terminator X, Dominator and HP EFI Systems Holley 558-400 Auxiliary Input/Output Harness Compatible with Holley Terminator X, HP or Dominator EFI systems This unterminated harness connects to the (8) pin Metri-Pack Input/Output connector... MSRP: Was: $130.95 Now: $117.85 Out of stock Compare
