Special Offers

V8 over Manifold, Bosch Style Connector Harness for Avenger EFI, HP EFI & Dominator EFIBrandHolley EFIEmission Code3Harness ApplicationUniversalHarness TypeInjectorProduct TypeBosch EV1 Style Injector HarnessPart Number558-200..

BrandHolley EFIEmission Code3Harness ApplicationUniversalHarness TypeInjectorProduct TypeInjector Harness - ConnectorPart Number558-202..

BrandHolley EFIEmission Code3Harness ApplicationUniversalHarness TypeInjectorProduct TypeInjector Harness - ConnectorPart Number558-203..

Universal Unterminated Injector Harness for HP EFI & Dominator EFI(Bosch EV1 style).BrandHolley EFIEmission Code3Harness ApplicationUniversalHarness TypeInjectorProduct TypeUniversal Unterminated Injector HarnessPart Number558-204..

2x4 BBL Holley TBI Injector Harness for HP EFI & Dominator EFI BrandHolley EFIEmission Code3Harness ApplicationTBIHarness TypeInjectorProduct TypeThrottle Body Injector HarnessPart Number558-206..

Unterminated 16 injectors MPFI harness Terminated at injector connectors (Bosch style). Harness must be assembled and require crimping Metripak150 connectors. Includes all connectors, pins, terminals, and loom needed. for HP EFI & Dominator EFI BrandHolley EFIEmission Code3Harness ApplicationUniversalHarness TypeInjectorProduct TypeUniversal Unterminated Injector HarnessPart Number558-207..

Unterminated 24 injector MPFI harness Terminated at injector connectors (Bosch style). Harness must be assembled and require crimping Metripak 150 connectors. Includes all connectors, pins, terminals, and loom needed. for HP EFI & Dominator EFIBrandHolley EFIEmission Code3Harness ApplicationUniversalHarness TypeInjectorProduct TypeUniversal Unterminated Injector HarnessPart Number558-208..

Ford V8 Injector Harness for HP EFI & Dominator EFIBrandHolley EFIEmission Code3Harness ApplicationFordHarness TypeInjectorProduct TypeFord EV1 Style Injector HarnessPart Number558-209..

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..

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..

Ford V8 Injector Harness for Ford USCAR / EV6 style Fuel Injectors (Evenly Spaced)BrandHolley EFIEmission Code3Harness ApplicationFordHarness TypeInjectorProduct TypeFord EV6 Style Injector HarnessPart Number558-212..

Ford V8 Injector Harness for Jetronic "Bosch" style Fuel Injectors (Evenly Spaced)BrandHolley EFIEmission Code3Harness ApplicationFordHarness TypeInjectorProduct TypeFord EV1 Style Injector HarnessPart Number558-213..

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..

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..

Shielded Unterminated Magnetic Pick-Up harness for Holley EFI systems BrandHolley EFIEmission Code3Harness ApplicationUniversalHarness TypeIgnitionProduct TypeIgnition HarnessesPart Number558-303..

HEI Adapter HarnessBrandHolley EFIEmission Code3Harness ApplicationGMHarness TypeIgnitionProduct TypeIgnition HarnessesPart Number558-304..

Ford TFI Ignition Adapter HarnessBrandHolley EFIEmission Code3Harness ApplicationFordHarness TypeIgnitionProduct TypeIgnition HarnessesPart Number558-305..

Universal Unterminated Ignition Harness for HP EFI & Dominator EFIBrandHolley EFIEmission Code3Harness ApplicationUniversalHarness TypeIgnitionProduct TypeUniversal Unterminated Ignition HarnessPart Number558-306..

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..

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..