Automotive Ignition & Electrical Supplies at Summit Racing

Holley HP EFI ECU and Harness Kits 550-603

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, GM, LS2, LS7, 58x Crank Sensor, Kit

Part Number: HLY-550-603

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/9/2026

...Loading

Estimated Ship Date: Monday 2/9/2026

Holley HP EFI ECU and Harness Kits 550-602

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, Wideband, CANBUS, Chevy, LS, 5.7L, Kit

Part Number: HLY-550-602

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Feb 25, 2026 if ordered today

...Loading

Estimated Ship Date: Feb 25, 2026 if ordered today

American Autowire Classic Update Series Wiring Harness Kits for 1974 CAMARO - 510567

Wiring Harness, Classic Update Series, Front Mount Fuse Block, Standard Length, Chevy, Camaro, Kit

Part Number: AWW-510567

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

...Loading

Estimated Ship Date: Monday 2/9/2026

Holley HP EFI ECU and Harness Kits 550-605N

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, NTK O2, Wideband, Universal, Un-terminated, Kit

Part Number: HLY-550-605N

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

...Loading

Estimated Ship Date: Monday 2/9/2026

Edelbrock Pro-Flo 4 EFI ECU and Electronics Kits 35717

PRO FLO 4 EFI ECU AND ELECTRONICS KIT, FORD 289, 302

Part Number: EDL-35717

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 6, 2026 if ordered today

Edelbrock Pro-Flo 4 EFI ECU and Electronics Kits 35718

PRO FLO 4 EFI ECU AND ELECTRONICS KIT, FORD 351W

Part Number: EDL-35718

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 6, 2026 if ordered today

Holley HP EFI ECU and Harness Kits 550-619

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Bosch O2 Sensor, Wideband, CANBUS, Ford, 4-valve, 5.0L, Kit

Part Number: HLY-550-619

Not Yet Reviewed

Estimated Ship Date: Feb 24, 2026 if ordered today

...Loading

Estimated Ship Date: Feb 24, 2026 if ordered today

Holley HP EFI ECU and Harness Kits 550-616

Engine Management Systems, HP EFI, ECU and Harness, Connects 16-Injectors, 8-Coils, Bosch O2, Wideband, Ford, Lincoln, Mercury, 2V, 4.6L, 5.4L, Kit

Part Number: HLY-550-616

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 25, 2026 if ordered today

...Loading

Estimated Ship Date: Feb 25, 2026 if ordered today

Holley HP EFI ECU and Harness Kits for 1999-2004 MUSTANG - 550-617

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Bosch O2 Sensor, Wideband, CANBUS, Ford, 4-valve, 4.6L, 5.4L, Kit

Part Number: HLY-550-617

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 25, 2026 if ordered today

...Loading

Estimated Ship Date: Feb 25, 2026 if ordered today

Holley HP EFI ECU and Harness Kits 550-628N

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, NTK O2 Sensor, Wideband, CANBUS, Ford, 4.6L, Kit

Part Number: HLY-550-628N

Not Yet Reviewed

Estimated Ship Date: Feb 25, 2026 if ordered today

...Loading

Estimated Ship Date: Feb 25, 2026 if ordered today

Holley HP EFI ECU and Harness Kits 550-604N

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, NTK O2, Wideband, CANBUS, Universal, MPFI, Kit

Part Number: HLY-550-604N

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

...Loading

Estimated Ship Date: Monday 2/9/2026

Holley HP EFI ECU and Harness Kits 550-602N

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, NKT O2 Sensor, GM, LS, 24x Crank Sensor, Kit

Part Number: HLY-550-602N

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

...Loading

Estimated Ship Date: Monday 2/9/2026

Holley HP EFI ECU and Harness Kits 550-601N

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, O2 Sensor, for GM TPI, Holley Stealth Ram, Kit

Part Number: HLY-550-601N

Not Yet Reviewed

Estimated Ship Date: Feb 25, 2026 if ordered today

...Loading

Estimated Ship Date: Feb 25, 2026 if ordered today

Holley HP EFI ECU and Harness Kits 550-605

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, Wideband, CANBUS, Universal, Un-terminated, Kit

Part Number: HLY-550-605

Not Yet Reviewed

Estimated Ship Date: Feb 24, 2026 if ordered today

...Loading

Estimated Ship Date: Feb 24, 2026 if ordered today

Holley HP EFI ECU and Harness Kits for 2015-2017 F-150, 2016-2017 MUSTANG - 550-619N

Engine Management Systems, HP EFI, ECU and Harness Up to 16-Injectors, 8-Coils, NTK O2 Sensor, Wideband, CANBUS, Ford, 4-valve, 5.0L, Kit

Part Number: HLY-550-619N

Not Yet Reviewed

Estimated Ship Date: Feb 25, 2026 if ordered today

...Loading

Estimated Ship Date: Feb 25, 2026 if ordered today

American Autowire Classic Update Series Wiring Harness Kits for 1984-1990 CHEROKEE - 510872

Wiring Harness, Classic Update Kit, Jeep XJ, Kit

Part Number: AWW-510872

Not Yet Reviewed

Estimated Ship Date: Apr 15, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 15, 2026 if ordered today

Jesel Extreme Series Distributor Drive Kits with ICT KDD-45465