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Holley is quickly becoming The New Standard In EFI! Holley’s HP ECU is standard equipment on the 2013/2014 Chevrolet COPO Camaro and Holley’s EFI throttle body powers every NASCAR Sprint Cup Series™ team. Top racers are making the switch to Holley EFI every day. Racers like Tom Bailey who set three new records and took the overall event win on the 2013 Hot Rod Magazine Drag Week and John Scali who used it to win the 2013 JEGS All-Star race. But that’s not all. The world’s best hot rod builders and tuners are making the switch to Holley EFI. Builders like Dave Lane who used Holley EFI to power the 2013 Goodguys Hot Rod of the Year and tuners like Steve Morris who use it to build some of the baddest forced induction beasts on the planet. It’s the easiest, most refined, feature-rich system that money can buy. But, don’t take our word for it, see what the best are saying about Holley EFI!
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Description: Wiring Harness, Bench Top Test, Holley EFI, Each
Item #: HLY558-127
Condition:
New
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Price: $212.00
Sale: $189.95
Save: 10%
Save: $22.05
Description: CAN Wiring Harness, Extension Harness, 12 ft Long, Black Rubber Coated, Each
Item #: HLY558-426
Condition:
New
Limited Supply: Only 5 Left!
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Price: $68.28
Sale: $61.45
Save: 10%
Save: $6.83
Description: CAN Wiring Harness, Extension Harness, 8 ft Long, Black Rubber Coated, Each
Item #: HLY558-425
Condition:
New
Limited Supply: Only 6 Left!
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Price: $56.89
Sale: $51.20
Save: 10%
Save: $5.69
Description: CAN Wiring Harness, Extension Harness, 9 in Long, Black Rubber Coated, Each
Item #: HLY558-428
Condition:
New
Limited Supply: Only 4 Left!
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Price: $45.50
Sale: $40.95
Save: 10%
Save: $4.55
Description: CAN Wiring Harness, Male To Female Adapter, 4 ft Long, Black Rubber Coated, Each
Item #: HLY558-452
Condition:
New
Limited Supply: Only 3 Left!
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Price: $45.50
Sale: $40.95
Save: 10%
Save: $4.55
Description: Ignition Wiring Harness, Big Wire C-N-P Sub Harness, V8, Each
Item #: HLY558-318
Condition:
New
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Price: $246.00
Sale: $220.95
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Save: $25.05
Description: EFI Wiring Harness, Crank / Camshaft Ignition Harness, Holley Hp / Dominator EFI, Universal, Kit
Item #: HLY558-410
Condition:
New
Limited Supply: Only 0 Left!
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Price: $95.50
Sale: $85.95
Save: 10%
Save: $9.55
Description: Dash Wiring Harness, Pins / Plugs / Wires Included, Kit
Item #: HLY558-456
Condition:
New
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Price: $240.00
Sale: $215.95
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Description: Data Transfer Cable Adapter, 2 Pin Harness to CAN, Each
Item #: HLY558-430
Condition:
New
Limited Supply: Only 1 Left!
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Price: $36.26
Sale: $32.63
Save: 10%
Save: $3.63
Description: Wiring Harness Adapter, Delphi M/P 3 Pin to Delphi GT 3 Pin, GM LS-Series, Each
Item #: HLY558-467
Condition:
New
Limited Supply: Only 3 Left!
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Orders over $149 ship free. Oversize items are excluded.
Price: $27.19
Sale: $21.28
Save: 22%
Save: $5.91
Description: Digital Dash Wiring Harness, Service Replacement, CANBus / USB Connector, Holley Digital Dash, Kit
Item #: HLY558-444
Condition:
New
Limited Supply: Only 0 Left!
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Orders over $149 ship free. Oversize items are excluded.
Price: $77.72
Sale: $69.95
Save: 10%
Save: $7.77
Description: Digital Dash Wiring Harness, Input/Output Extender, Holley Digital Dash, Kit
Item #: HLY558-432
Condition:
New
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Price: $137.00
Sale: $122.95
Save: 10%
Save: $14.05
Description: Wiring Harness, Drive by Wire Dual Throttle Body, Mopar Gen III Hemi, Each
Item #: HLY558-450
Condition:
New
Limited Supply: Only 6 Left!
Ships direct from manufacturer.
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Price: $312.00
Sale: $279.95
Save: 10%
Save: $32.05
Description: EFI Wiring Harness, J2B Auxiliary Connector Harness, Holley Dominator EFI, Universal, Kit
Item #: HLY558-402
Condition:
New
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Orders over $149 ship free. Oversize items are excluded.
Price: $160.00
Sale: $143.95
Save: 10%
Save: $16.05
Description: EFI Wiring Harness, J2A Auxiliary Connector Harness, Holley Dominator EFI, Universal, Kit
Item #: HLY558-401
Condition:
New
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Price: $228.00
Sale: $204.95
Save: 10%
Save: $23.05
Description: EFI Wiring Harness, Drive by Wire, Holley Dominator EFI, GM, Each
Item #: HLY558-406
Condition:
New
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Price: $246.00
Sale: $220.95
Save: 10%
Save: $25.05
Description: EFI Wiring Harness, Drive by Wire, Holley Dominator EFI, GM, Each
Item #: HLY558-429
Condition:
New
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Price: $246.00
Sale: $220.95
Save: 10%
Save: $25.05
Description: EFI Wiring Harness, EV6 / USCAR Style Injectors, Holley EFI, Small Block Ford, Each
Item #: HLY558-212
Condition:
New
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Price: $172.00
Sale: $153.95
Save: 10%
Save: $18.05
Description: Ignition Wiring Harness, Flying Lead, 15 ft Long, Crimped, Universal, Kit
Item #: HLY558-126
Condition:
New
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Price: $423.00
Sale: $379.95
Save: 10%
Save: $43.05
Description: Transmission Wiring Harness, Plug-N-Play, j4 Connector, 4R70W / 4R75W, Ford, Each
Item #: HLY558-470
Condition:
New
Limited Supply: Only 3 Left!
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Price: $234.00
Sale: $209.95
Save: 10%
Save: $24.05
Description: Ignition Wiring Harness, Coil-On-Plug Main Harness, Ford MPFI, Each
Item #: HLY558-118
Condition:
New
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Price: $593.00
Sale: $532.95
Save: 10%
Save: $60.05
Description: EFI Wiring Harness, Transmission, Holley Dominator EFI, GM 4L60E / 4L80E, Each
Item #: HLY558-405
Condition:
New
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Price: $302.00
Sale: $270.95
Save: 10%
Save: $31.05
Description: Ignition Wiring Harness, Factory Replacement, Injector Sub Harness, GM LS-Series, Kit
Item #: HLY558-321
Condition:
New
Same Day Shipping!
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Free Ground Shipping
Price: $195.00
Sale: $174.95
Save: 10%
Save: $20.05
Description: Gauge Wiring Harness, Analog Gauges, Holley EFI CAN Gauges, Universal, Kit
Item #: HLY554-130
Condition:
New
Same Day Shipping!
Orders over $149 ship free. Oversize items are excluded.
Price: $137.00
Sale: $122.95
Save: 10%
Save: $14.05
Description: Gauge Wiring Harness, Holley EFI to RacePak Adapter, Kit
Item #: HLY558-447
Condition:
New
Same Day Shipping!
Orders over $149 ship free. Oversize items are excluded.
Price: $97.89
Sale: $88.10
Save: 10%
Save: $9.79
More About Holley EFI
Holley is quickly becoming The New Standard In EFI! Holley’s HP ECU is standard equipment on the 2013/2014 Chevrolet COPO Camaro and Holley’s EFI throttle body powers every NASCAR Sprint Cup Series™ team. Top racers are making the switch to Holley EFI every day. Racers like Tom Bailey who set three new records and took the overall event win on the 2013 Hot Rod Magazine Drag Week and John Scali who used it to win the 2013 JEGS All-Star race. But that’s not all. The world’s best hot rod builders and tuners are making the switch to Holley EFI. Builders like Dave Lane who used Holley EFI to power the 2013 Goodguys Hot Rod of the Year and tuners like Steve Morris who use it to build some of the baddest forced induction beasts on the planet. It’s the easiest, most refined, feature-rich system that money can buy. But, don’t take our word for it, see what the best are saying about Holley EFI!
