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Home » Fuel Injection System Wiring Harnesses

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CAN Wiring Harness 4
Connector Kit 2
Data Cable 3
Data Transfer Cable 1
EFI Wiring Harness 32
Engine Wiring Harness 2
Fuel Injector Adapter 1
Fuel Injector Harness 1
Fuel Injector Harness Adapter 2
Transmission Wiring Harness 7
Wiring Harness 1
Wiring Harness Adapter 1

FAST - Fuel Air Spark Technology 3
FiTech Fuel Injection 1
Holley 1
Holley EFI 33
Holley Sniper EFI 2
ICT Billet 2
MSD 6
Painless Performance Products 9

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57 Products

Sale

Holley EFI

Holley EFI HEI GM Small Cap Ignition Harness for Avenger EFI, HP EFI & Dominator EFI
Part #: HLY558-304

Out of stock

Regular price $54.35

Regular price ~~$61.95~~ Sale price $54.35
Sale

Holley EFI

Holley EFI Map Sensor Adapter - LS1 & LS2 to LS3
Part #: HLY558-416

In stock

Regular price $33.20

Regular price ~~$41.50~~ Sale price $33.20
Sale

MSD

MSD Trans Controller Ford Harness - 4R100 - 1998-Up
Part #: MSD2774

In stock

Regular price $278.95

Regular price ~~$313.95~~ Sale price $278.95
Sale

MSD

MSD Trans Controller Ford Harness - E40D - 1989-1994
Part #: MSD2776

In stock

Regular price $251.05

Regular price ~~$313.95~~ Sale price $251.05
Sale

Painless Performance Products

Painless Performance 1998-2002 GM LS-1 Harness Std. Length
Part #: PWI60508

Out of stock

Regular price $549.99

Regular price ~~$625.97~~ Sale price $549.99
Painless Performance Products

Painless Performance 1992-1997 GM LT-1 Harness Std. Length
Part #: PWI60502

Only 2 left

Regular price $649.99
Sale

Holley EFI

Holley EFI Ford 4R70W/4R75W Transmission Control Harness 98-03
Part #: HLY558-470

Only 1 left

Regular price $223.15

Regular price ~~$278.95~~ Sale price $223.15
Sale

Painless Performance Products

Painless Performance 1999-2006 GM Gen III 4.8, 5.3 & 6.0L Harness Std. Length
Part #: PWI60217

Out of stock

Regular price $579.99

Regular price ~~$658.36~~ Sale price $579.99
Sale

Painless Performance Products

Painless Performance 1992-1997 GM LT-1 Harness Extra Length
Part #: PWI60505

Only 1 left

Regular price $724.99

Regular price ~~$786.36~~ Sale price $724.99
Sale

Painless Performance Products

Painless Performance 1986-1995 Ford 5.0L Harness Std. Length
Part #: PWI60510

In stock

Regular price $514.99

Regular price ~~$588.10~~ Sale price $514.99
Sale

MSD

MSD Trans Controller Ford Harness - AODE/4R70W - 1998-Up
Part #: MSD2772

Out of stock

Regular price $278.95

Regular price ~~$313.95~~ Sale price $278.95
Sale

MSD

MSD Trans Controller Ford Harness - E40D,1995-1997
Part #: MSD2775

In stock

Regular price $278.95

Regular price ~~$313.95~~ Sale price $278.95
Sale

Holley EFI

Holley EFI Wire Harness Kit - EFI Terminator I/O
Part #: HLY558-420

Only 3 left

Regular price $43.49

Regular price ~~$54.36~~ Sale price $43.49
Sale

MSD

MSD Trans Controller Ford Harness - AODE/4R70W - 1992 - 1997
Part #: MSD2773

In stock

Regular price $302.95

Regular price ~~$340.95~~ Sale price $302.95
Sale

MSD

MSD Automatic Transmission Controller GM Harness 4L60-85E - 93-up (4L70 06-09)
Part #: MSD2770

In stock

Regular price $227.65

Regular price ~~$284.95~~ Sale price $227.65
ICT Billet

ICT Billet EV1 to USCAR EV6 Fuel Injector Harness Adapter (Set of 8)
Part #: ICTWAINJ31

Only 4 left

Regular price $76.99
Sale

Holley EFI

Holley EFI Wire Harness - LS2/LS3/ LS7 Fuel Injectors
Part #: HLY558-501

In stock

Regular price $740.95

Regular price ~~$925.95~~ Sale price $740.95
Sale

Holley EFI

Holley EFI Magnetic Pick-up Ignition Harness for HP EFI & Dominator EFI
Part #: HLY558-303

Out of stock

Regular price $25.49

Regular price ~~$91.06~~ Sale price $25.49
Sale

Holley EFI

Holley EFI J4 Connector & Harness
Part #: HLY558-404

In stock

Regular price $186.25

Regular price ~~$232.95~~ Sale price $186.25
Sale

Painless Performance Products

Painless Performance 1985-1989 GM V8 TPI Harness (MAF) Std. Length
Part #: PWI60102

Only 3 left

Regular price $494.99

Regular price ~~$528.93~~ Sale price $494.99
Sale

Painless Performance Products

Painless Performance 1990-1992 GM V8 TPI Harness (MAP) Std. Length
Part #: PWI60103

Out of stock

Regular price $499.90

Regular price ~~$528.93~~ Sale price $499.90
Sale

Painless Performance Products

Painless Performance 1999-2006 GM Gen III 4.8, 5.3 & 6.0L Throttle by Wire Harness Std. Length
Part #: PWI60221

Only 2 left

Regular price $715.99

Regular price ~~$811.74~~ Sale price $715.99
Sale

Holley EFI

Holley EFI Dodge Hemi Drive-By-Wire Dual TB Harness 2013-Up
Part #: HLY558-450

In stock

Regular price $310.65

Regular price ~~$381.95~~ Sale price $310.65
ICT Billet

ICT Billet Mini Delphi Multec 2 to USCAR EV6 Fuel Injector Harness Adapter (Set of 8)
Part #: ICTWAINJ32

Only 2 left

Regular price $76.99
Sale

Holley EFI

Holley EFI Terminator Throttle Body Injector Harness
Part #: HLY558-439

Only 3 left

Regular price $229.95

Regular price ~~$258.95~~ Sale price $229.95
Sale

Painless Performance Products

Painless Performance 1986-1993 GM 4.3L V6; 5.0,5.7 & 7.4L V8 TBI Harness Std. Length
Part #: PWI60101

In stock

Regular price $414.99

Regular price ~~$443.21~~ Sale price $414.99
Sale

Holley EFI

Holley EFI Performance Products Crank/Cam Ignition Harness
Part #: HLY558-431

Only 3 left

Regular price $82.61

Regular price ~~$103.95~~ Sale price $82.61
Sale

Holley EFI

Holley EFI GM 4L60/80E Transmission Harness
Part #: HLY558-405

In stock

Regular price $251.05

Regular price ~~$313.95~~ Sale price $251.05
Sale

Holley EFI

Holley EFI LS1 Main Harness for HP EFI & Dominator EFI
Part #: HLY558-102

In stock

Regular price $522.95

Regular price ~~$653.95~~ Sale price $522.95
Sale

Holley EFI

Holley EFI Drive by Wire EFI Wiring Harness - Holley EFI Dominator EFI - GM
Part #: HLY558-429

In stock

Regular price $223.15

Regular price ~~$278.95~~ Sale price $223.15
Sale

Holley EFI

Holley EFI LSx Injector Harness for HP EFI & Dominator EFI
Part #: HLY558-201

In stock

Regular price $143.05

Regular price ~~$178.95~~ Sale price $143.05
Sale

Holley EFI

Holley EFI J1A/B Input/Output Connector
Part #: HLY558-400

In stock

Regular price $99.85

Regular price ~~$124.95~~ Sale price $99.85
Sale

Holley EFI

Holley EFI Universal Unterminated Injector Harness
Part #: HLY558-204

In stock

Regular price $207.95

Regular price ~~$233.95~~ Sale price $207.95
Sale

Holley EFI

Holley EFI Dominator EFI Auxiliary Harness
Part #: HLY558-402

In stock

Regular price $145.75

Regular price ~~$182.95~~ Sale price $145.75
Sale

Holley EFI

Holley EFI Injector Harness - 16 Injectors - Unterminated
Part #: HLY558-207

In stock

Regular price $279.95

Regular price ~~$314.95~~ Sale price $279.95
Sale

Holley EFI

Holley EFI Dominator EFI Connector J2A Auxiliary Harness
Part #: HLY558-401

In stock

Regular price $189.85

Regular price ~~$237.95~~ Sale price $189.85
Sale

Holley EFI

Holley EFI Injector Harness Ford w/ Jetronic Injectors
Part #: HLY558-213

In stock

Regular price $164.19

Regular price ~~$204.95~~ Sale price $164.19
Sale

Holley EFI

Holley EFI Universal MPFI Main Harness for HP EFI & Dominator EFI
Part #: HLY558-104

In stock

Regular price $437.95

Regular price ~~$546.95~~ Sale price $437.95
Sale

Holley EFI

Holley EFI Dominator EFI GM Drive By Wire Harness
Part #: HLY558-406

In stock

Regular price $205.15

Regular price ~~$256.95~~ Sale price $205.15
Sale

Holley EFI

Holley EFI Main Power Harness
Part #: HLY558-308

Only 5 left

Regular price $81.68

Regular price ~~$102.95~~ Sale price $81.68
Sale

Holley EFI

Holley EFI Universal Unterminated Ignition Harness
Part #: HLY558-306

In stock

Regular price $183.95

Regular price ~~$206.95~~ Sale price $183.95
Sale

Holley EFI

Holley EFI LS2 Main Harness for HP EFI & Dominator EFI
Part #: HLY558-103

In stock

Regular price $522.95

Regular price ~~$653.95~~ Sale price $522.95
Sale

Holley EFI

Holley EFI V8 over manifold, Bosch Style Connector Harness for Avenger EFI, HP EFI & Dominator EFI
Part #: HLY558-200

In stock

Regular price $162.54

Regular price ~~$202.95~~ Sale price $162.54
Sale

Holley EFI

Holley EFI Unterminated Universal Main Harness for HP EFI & Dominator EFI
Part #: HLY558-105

In stock

Regular price $437.95

Regular price ~~$546.95~~ Sale price $437.95
FAST - Fuel Air Spark Technology

F.A.S.T. Injector Adapter Harness USCAR to Minitimer (8 Pack)
Part #: FST170604-8

Only 4 left

Regular price $106.95

12

Fuel Injection System Wiring Harnesses

Fuel Injection System Wiring Harnesses make a tough job easy. They are designed to be a direct fit with the factory ecu on street applications. Fuel Injection Wiring Harness kits include instructions for ease of installation.

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