Availability
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, for GM TPI, Holley Stealth Ram, Kit
Part Number: HLY-550-601
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Wiring Harnesses, Holley EFI, LS2/3/7, 58X/4X, Main Harness, Plug-and-Play, Extended Length, for Dominator/HP EFI Systems, Chevy, 6.0-7.0L, Each
Part Number: HLY-558-134
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Engine Management Systems, Terminator X MAX, 8-EV1 Injectors, 8-Coils, Analog, Trans and Tuner Controls, Ford Injector Spacing, 4R70W Harness, Kit
Part Number: HLY-550-944
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Engine Management Systems, Terminator X MAX, 8-Injectors, 8-Coil, Sensors, Trans and Tuner Controller, Chevy, LS, 4.8-6.0L, 1x Cam, 24x Crank, Kit
Part Number: HLY-550-917-6
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Engine Management Systems, Terminator X, Up to 8-EV6 Injectors, 8-Coils, Analog, O2 Sensor, Plug-and-Play, 3.5 in. Controller, Ford, 4.6L, 5.4L, Kit
Part Number: HLY-550-1219
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, Wideband, CANBUS, Universal, MPFI, Kit
Part Number: HLY-550-604
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Direct Ignition System, DIS, Red, Cam Sync, Coils, Ignition Box, Chevy Small/Big Block, Kit
Part Number: MSD-60151
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Direct Ignition System, DIS, Black, Cam Sync, Coils, Ignition Box, Ford 289/302, Kit
Part Number: MSD-601523
Not Yet Reviewed
Estimated Ship Date: Dec 18, 2025 if ordered today
Estimated Ship Date: Dec 18, 2025 if ordered today
This product may not be eligible for select promotional offers
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
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Bosch O2 Sensor, Wideband, CANBUS, Ford, 4.6L, Kit
Part Number: HLY-550-628
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
This product may not be eligible for select promotional offers
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, Wideband, GM, LS2, LS3, LS7, Bosch O2, Kit
Part Number: HLY-550-607
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
This product may not be eligible for select promotional offers
Computer Programmer, TrailDash3, Jeep, JK, Each
Part Number: SRC-42050-3
Not Yet Reviewed
Estimated Ship Date: Dec 12, 2025 if ordered today
Estimated Ship Date: Dec 12, 2025 if ordered today
This product may not be eligible for select promotional offers
Engine Management Systems, Terminator X, Up to 8-EV6 Injectors, 8-Coil, O2 Sensor, Plug-and-Play, Tuner, Controller, Dodge, Chrysler, 5.7-6.4L, Kit
Part Number: HLY-550-1225
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Computer Programmer, TrailDash3, Jeep, JL, Each
Part Number: SRC-42051-JL-3
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Direct Ignition System, DIS, Black, Cam Sync, Coils, Ignition Box, Ford 351W, Kit
Part Number: MSD-601533
Estimated Ship Date: Dec 17, 2025 if ordered today
Estimated Ship Date: Dec 17, 2025 if ordered today
This product may not be eligible for select promotional offers
Engine Management Systems, Terminator X, Up to 8-Injectors, 8-Coils, Analog, CANBUS, Sensors, USB Tuning Cable, Chevy, 5.7L, 1x Cam, 24x Crank, Kit
Part Number: HLY-550-903T
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Engine Management Systems, Terminator X MAX, 8-EV6 Injectors, 8-Coils, Analog, Sensors, USB Tuning Cable, Chevy, LS, 4.8-6,2L, 4x Cam, 58x Crank, Kit
Part Number: HLY-550-931T
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Engine Management Systems, Terminator X MAX, 8-EV1 Injectors, 8-Coils, Sensors, Chevy, LS, 5.7L, 1x Cam, 24x Crank, Kit
Part Number: HLY-550-929
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Engine Management Systems, Terminator X MAX, 8-EV1 Injectors, 8-Coils, Analog, Tuner Controls, Chevy, LS, 4,8-6.2L, 4x Cam, 58x Crank, Kit
Part Number: HLY-550-933
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Engine Management Systems, Terminator X MAX, 8-EV6 Injectors, 8-Coils, Trans Control, Analog, USB Tune Cable, Chevy, LS, 5.7L, 1x Cam, 24x Crank, Kit
Part Number: HLY-550-934T
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Engine Management Systems, Terminator X MAX, 8-EV6 Injectors, 8-Coils, Drive-by-Wire, 3.5 in. Controller, Chrysler, Dodge, 5.7-6.4L, Non-VVT, Kit
Part Number: HLY-550-1423
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
This product may not be eligible for select promotional offers
Need It Sooner? We recommend these similar substitute parts:
Engine Management Systems, Terminator X, Up to 8-EV6 Injectors, 8-Coils, Analog, O2 Sensor, Plug-and-Play, 3.5 in. Controller, Ford, 4.6L, 5.4L, Kit
Part Number: HLY-550-1217
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Engine Management Systems, Terminator X MAX, 8-EV6 Injectors, 8-Coils, Analog Input, USB Cable, Chevy, LS, 5,7L, 1x Cam, 24x Crank, Kit
Part Number: HLY-550-932T
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
This product may not be eligible for select promotional offers
Engine Management Systems, Terminator X, Up to 8-Injectors, 8-Coil, Analog, CANBUS, Sensors, USB Tuning Cable, Chevy, 4.8-6.2L, 4x Cam, 58x Crank, Kit
Part Number: HLY-550-910T
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Engine Management Systems, Terminator X MAX, 8-EV1 Injectors, 8-Coils, Trans Control, Sensors, USB Tune Cable, Chevy, LS, 5.7L, 1x Cam, 24x Crank, Kit
Part Number: HLY-550-916T
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
This product may not be eligible for select promotional offers
Need It Sooner? We recommend these similar substitute parts:
Modal Header
Call To Order
This is a custom order part. You can order this part by Contacting Us.