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558-209 | FORD V-8 INJECTOR HARNESSclose
Ford V8 Injector Harness for HP EFI & Dominator EFIBrandHolley EFIEmission Code3Harness ApplicationFordHarness TypeInjectorProduct TypeFord EV1 Style Injector HarnessPart Number558-209..
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558-210 | INJECTOR HARNESS, V8 EVENLY SPACED USCARclose
An Injector Harness is required and Holley offers two. The harness with USCAR/Stock injector connectors will cover most applications that are using the factory injectors. The other harness is for the Bosch and Holley (or Jetronic/Minitimer) injector connector that is commonly used in aftermarket applications for larger injectors. View the image gallery to see images of both types of injectors.Feat..
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558-211 | INJECTOR HARNESS, V8 EVENLY SPACED JETROclose
An Injector Harness is required and Holley offers two. The harness with USCAR/Stock injector connectors will cover most applications that are using the factory injectors. The other harness is for the Bosch and Holley (or Jetronic/Minitimer) injector connector that is commonly used in aftermarket applications for larger injectors. View the image gallery to see images of both types of injectors.Feat..
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558-216 | UNIV. UNTERMINATED INJ HARNESS EV6close
Introducing the latest addition to the Holley EFI Product Lineup! Our EV6 unterminated injector harness is perfect for anyone wanting to add EV6 injectors to their engine bay. This harness kit comes with everything you need to build a custom cut to fit EV6 injector harness for an 8 cylinder engine. Don't forget, if you need a quality metripack crimping tool to complete the job, Holley EFI has you..
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558-302 | TACH INPUT IGNITION ADAPTERclose
This is only used on applications using a CD Box, such as an MSD 6AL, while not using timing control.BrandHolley EFIEmission Code3Harness TypeIgnitionIgnition TypeCD Ignition (No Timing Control)Product TypeIgnition HarnessesPart Number558-302..
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558-303 | MAG PICKUKP IGN HARNESSclose
Shielded Unterminated Magnetic Pick-Up harness for Holley EFI systems BrandHolley EFIEmission Code3Harness ApplicationUniversalHarness TypeIgnitionProduct TypeIgnition HarnessesPart Number558-303..
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558-304 | HEI IGN HARNESSclose
HEI Adapter HarnessBrandHolley EFIEmission Code3Harness ApplicationGMHarness TypeIgnitionProduct TypeIgnition HarnessesPart Number558-304..
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558-305 | FORD TFI IGN HARNESSclose
Ford TFI Ignition Adapter HarnessBrandHolley EFIEmission Code3Harness ApplicationFordHarness TypeIgnitionProduct TypeIgnition HarnessesPart Number558-305..
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558-306 | UNIV UNTERMINATED IGN HARNESSclose
Universal Unterminated Ignition Harness for HP EFI & Dominator EFIBrandHolley EFIEmission Code3Harness ApplicationUniversalHarness TypeIgnitionProduct TypeUniversal Unterminated Ignition HarnessPart Number558-306..
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558-307 | UNIVERSAL COIL ON PLUG HARNESSclose
Universal Coil On/Near Plug Harness – Use to connect Holley PN 558-312 or factory GM LSx coil harnesses to Holley HP or Dominator ECU'sFeatures:For use with Holley HP or Dominator ECUsUniversalConnects 558-312 or factory GM LSx coil harnessesBrandHolley EFIEmission Code3Harness ApplicationUniversalHarness TypeIgnitionProduct TypeDistrutorless Ignition - DIS - smart coilPart Number558-307..
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558-308 | MAIN POWER HARNESSclose
This Harness is required with HP or Dominator ECUs. Includes, 13' long, 10 AWG main power harness, Qty. (2) 3/8" ring terminals and shrink tube (not pictured) . The harness is fuse protected and covered in braided split loom for additional abrasion protection . BrandHolley EFIEmission Code3Fuse40 AMP maxHarness ApplicationUniversalHarness TypeMain Battery PowerProduct TypePower HarnessWire Dia..
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558-312 | HP SMART COIL SUB HARNESSESclose
HP Smart Coil ignition sub-harness. Includes a pair of coil harnesses for an 8 cylinder engine. These harnesses are similar in design to factory GM LSx coil harnesses, but plug into Holley HP Smart Coils. They plug into Holley LSx plug and play main harnesses if one wants to replace factory LSx coils with Holley HP Smart Coils. If using a non-LSx main harness, purchase PN 558-307 for connectors, w..
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558-319 | MAIN POWER HARNESS W/ AUX CONNECTORclose
Introducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI! Do you have a coyote crate engine going in your dream car? Is your weekend road race warrior powered by a coyote junkyard engine with locked cams? Unlock the full potential of your high revving power plant with the Holley EFI Plug and Play Coyote Ti-VCT Control Module. Features:Plug and Play with Dominator or HP ECU ..
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558-408 | LOOSE J2-J4 CONNECTOR PINclose
j2A, j2B, j3, j4 Connector & Pin Kit - Contains connectors & pins, but no wiring. for Dominator EFIBrandHolley EFIEmission Code5Harness TypeAuxiliaryProduct TypeEFI Connector KitPart Number558-408..
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558-410 | CRANK/CAM HARNESSclose
Crank/Cam Ign. Harness. Fully terminated harness. Connects to Holley 60-2 crank sensor and GM Cam-Sync Distributor AC Delco PN213-350 or eficonnection.com sync pulse distributorBrandHolley EFIEmission Code3Harness ApplicationUniversalHarness TypeIgnitionProduct TypeCrank - Cam HarnessPart Number558-410..
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558-414 | HARNESS, TERMINATOR MAINclose
Replacement main wiring harness for Terminator EFI kits 550-405 and 550-406.BrandHolley EFIEmission Code3Product TypeTerminator TBI Main Engine HarnessPart Number558-414..
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558-415 | SUB-HARNESS, TERMINATORclose
Replacement throttle body wiring harness for Terminator EFI kits 550-405 and 550-406.BrandHolley EFIEmission Code3Product TypeTerminator Throttle Body HarnessPart Number558-415..
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558-422 | DBW HARNESS, FORD COYOTEclose
Drive-By-Wire harness for 2011-2017 Ford Coyote (5.0L) enginesFeatures:Designed to be used with Ford Throttle Body P/N's - BR3Z-9E926-C, BR3E-9F991-AB, and FR3E-9F991-AADesigned to be used with Ford Throttle Pedal P/N - BR3Z-9F836-D and BR3Z-9F836-C BrandHolley EFIEmission Code4Harness ApplicationFordHarness TypeDrive-By-WireProduct TypeDrive By Wire HarnessPart Number558-422..
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558-424 | CAN EXTENSION HARNESS, 4FTclose
Can Extension Harness (for Racepak and other external CAN drives)BrandHolley EFIEmission Code5Product TypeCAN Extension HarnessPart Number558-424..
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558-425 | CAN EXTENSION HARNESS, 8FTclose
Can Extension Harness (for Racepak and other external CAN drives)BrandHolley EFIEmission Code5Product TypeCAN Extension HarnessPart Number558-425..
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