Fuel Injection Harness

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Holley EFI
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Holley EFI CAN Extension Harness - 4' 558-424

Sale Price $59.25 Regular Price ~~$68.95~~
FAST

FAST Fuel Pump Harness w/ Solid State Relay for FAST EZ 2.0 Fuel Injection Systems 30313

Regular Price $155.95

Only 1 left
Edelbrock

Edelbrock The harness is required and sold separately from PF4 LS EFI kit. 35713

Regular Price $117.95

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FAST
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FAST Early/TPI TPS Sensor to Metripack/LS Harness Adapter Pigtail 308030

Regular Price $20.95

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FAST

FAST Electric Fan and Fuel Pump Harness for XFI 301406

Regular Price $92.95

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Painless Wiring

Painless Wiring Fuel Injection Wiring Harness; Mechanical Throttle; Standard Length; 60508

Regular Price $569.99
Painless Wiring

Painless Wiring Fuel Injection Wiring Harness; Extra Length; Grommet Firewall Pass Through; 60505

Regular Price $744.99

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Painless Wiring

Painless Wiring Fuel Injection Wiring Harness; Standard Length; 60510

Regular Price $534.99
Painless Wiring
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Painless Wiring Fuel Injection Wiring Harness; Mechanical Throttle Only; Standard Length; 60217

Regular Price $624.99

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Painless Wiring
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Painless Wiring Fuel Injection Wiring Harness; MASS Air Flow; Standard Length; 60102

Regular Price $504.99
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Holley EFI
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Holley EFI Holley EFI GM GEN V GDI Sub Harness 558-220

Sale Price $149.95 Regular Price ~~$172.95~~

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Holley EFI

Holley EFI Includes VVT and Oil Pump Connectors on IGN1A Smart Coils 558-141

Sale Price $499.95 Regular Price ~~$575.95~~
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Holley EFI

Holley EFI Ford 7.3L Godzilla Main Harness for Stock Coils 558-140

Sale Price $499.95 Regular Price ~~$562.95~~
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Holley EFI

Holley EFI Universal V8 MPFI EFI Harness Kit 558-504

Sale Price $849.95 Regular Price ~~$979.95~~

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Holley EFI

Holley EFI 1999-2004 Ford Modular 2 Valve Harness Kit 558-505

Sale Price $1,499.95 Regular Price ~~$1,743.95~~

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Holley EFI

Holley EFI Evenly spaced Ford V8 Injector Harness for Jetronic "Bosch EV1" style Injectors 558-213

Sale Price $199.95 Regular Price ~~$230.95~~
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Holley EFI

Holley EFI HP EFI ECU & Harness Kits 550-616

Sale Price $3,149.95 Regular Price ~~$3,543.95~~

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Holley EFI

Holley EFI HP EFI ECU and Harness Kits 550-616N

Sale Price $3,399.95 Regular Price ~~$3,824.95~~

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Holley EFI

Holley EFI HP EFI ECU and Harness Kits 550-617

Sale Price $3,149.95 Regular Price ~~$3,543.95~~

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Holley EFI

Holley EFI Universal Ford V8 Harness Kit 558-508

Sale Price $786.95 Regular Price ~~$906.95~~
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Holley EFI

Holley EFI GM LS2/LS3/LS7, 58X Crank Sensor, USCAR/ EV6 Injector 558-501

Sale Price $899.95 Regular Price ~~$1,037.95~~
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Holley EFI

Holley EFI Injector upgrade harness for Terminator Throttle Bodies. 558-439

Sale Price $249.95 Regular Price ~~$287.95~~

Only 4 left
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Holley EFI

Holley EFI Universal 4 Cylinder EV14 Injector Harness for HP EFI & Dominator EFI 558-440

Sale Price $119.95 Regular Price ~~$138.95~~

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Holley EFI

Holley EFI GM LS1/6, 24X Crank Sensor, Bosch Injector 558-500

Sale Price $999.95 Regular Price ~~$1,153.95~~

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Holley EFI

Holley EFI Unterminated 16 Injectors MPFI Harness 558-207

Sale Price $299.95 Regular Price ~~$345.95~~
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Holley EFI

Holley EFI GM LS2/LS3/LS7, 58X Crank Sensor, Bosch Injector 558-502

Sale Price $949.95 Regular Price ~~$1,094.95~~
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Holley EFI

Holley EFI GM TPI and Stealth Ram EFI Harness Kit 558-503

Sale Price $849.95 Regular Price ~~$979.95~~
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Holley EFI

Holley EFI Evenly spaced Ford V8 Injector Harness for USCAR / EV6 style Injectors 558-212

Sale Price $194.95 Regular Price ~~$224.95~~
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Holley EFI

Holley EFI NEW DEVICE TO TWO PIN MAIN HARNESS 558-430

Sale Price $41.97 Regular Price ~~$48.40~~
Sale!

Holley EFI

Holley EFI LS MULTEC 2 INJECTOR HARNESS - EARLY TRUCK 558-214

Sale Price $274.95 Regular Price ~~$316.95~~

Let customers speak for us

from 140 reviews

Great quality

Great quality,looks great 👍

Snapper Hitchens

06/17/2026

Suspension Engineering Silverado & Sierra Engine Cross Bar 1999-2006 2WD ONLY (Red or Black) 33-1143

Best looking headers I’ve ever seen for a 1980 C10

Best looking headers I’ve ever seen for a 1980 C10.

Patterson, Jesse

06/15/2026

Speed Engineering SBC Longtube Headers — 1960–1987 Chevrolet C10 & K10 Trucks | SBC 5.0L/305 & 5.7L/350 | 25-1236

Top quality and fits

Top quality and fits perfect

Eddy Flores

06/14/2026

Suspension Engineering Camaro & Firebird Lower Control Arm Relocation Brackets 1982-02 (Red or Black) 33-1006

Good

Good service!@

Jose Santana

Speed Engineering 1-7/8" LT Swap Longtube Headers — 1982–1988 GM G-Body | Gen V LT1/LT4 5.3L/6.2L | 25-1165

My lights were easy to install and worked with no issues

My lights were easy to install and worked with no issues. 10/10

Tracey Thomas

06/11/2026

Raxiom 15-22 Ford Mustang Axial Series LED Side Marker Lights Rear (Smoked)

Excellent quality

Excellent quality. Gives the space I need for more upgrades.

George Finn

Suspension Engineering Tunnel Brace 2008-2017 Camaro/Pontiac G8/Chevy SS (Red or Black) 33-1099

Top notch company.

Item was exactly as described and installed very easy. Shipping took a little longer than expected but was due to UPS. Would highly recommend.

Joe Nelson

06/09/2026

Edge Products Replacement power cable for CTS3, Trinity 2, and TrailDash 3. 98109

Fast Orange Grease X laundry soap cuts through the oil well!

Fast Orange Grease X laundry soap cuts through the oil well. I have spent weeks treating my son's clothes with Palmolive and other degreasers. They only took care of the surface oil and dirt. I did not have to pretreat with Fast Orange.

Connie Baxley

06/08/2026

Berry Performance Sales

Good price and fast shipping

Good price and fast shipping.

Jody Newman

06/06/2026

Speed Engineering 1-7/8" Longtube Headers & X-Pipe Full Kit — 2015–2023 Ford Mustang GT 5.0L Coyote | 25-1085

Product is well made and fits perfectly

Product is well made and fits

James & Candi White

06/03/2026

Advanced Engine Design Complete Baseplate Assm 850 CFM 6470

Flawless transaction and would

Flawless transaction and would recommend

JOHNNY BOX

06/01/2026

Took a little bit to get all the peices but over all good people and they definitely hold up on their end

Cameron

05/30/2026

Speed Engineering 1-7/8" Longtube Headers & Y-Pipe Full Kit — 2014–2018 Chevrolet Silverado & GMC Sierra 1500 | 5.3L/6.2L | 25-1037

The headers look like great construction came

The headers look like great construction came with header bolts v bands and gaskets at a great price! Awesome experience will shop here again!

Kenneth Rainey

05/29/2026

Speed Engineering Universal SBF Turbo Headers — Forward Facing Down | Small Block Ford 3.6L–5.8L | 25-1176

Fast

Fast shipping

kevin johnson

05/28/2026

SPC Performance 2021+ Ford Bronco Sport AWD / 2022+ Ford Maverick AWD Adjustable Rear Camber Arm

Bought them for a run stand

Bought them for a run stand, will work fine.

Anonymous

FlowTech Flowtech Purple Hornies Glasspack 50230FLT

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