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Fuel Injection Harnesses


Pre-tested for GUARANTEED PERFORMANCE


PAINLESS fuel injection harnesses are pre-tested for guaranteed performance. Our customers deserve the assurance that after installing our harness it's going to work! We connect all of our fuel injection harnesses to custom built, PART# specific continuity and pinout test boards to test each circuit for functionality and consistency in manufacturing. These test boards ensure each connection is working properly and that all pinouts are correct.

When you install a PAINLESS harness, we GUARANTEE it is going to work!

A wiring harness is only as good as its wire. PAINLESS harnesses use only TXL automotive grade wire. TXL wire handles more current and has a much higher temp rating than standard general purpose (GPT) wire used by many of our competitors. TXL wire is abrasion resistant and will not kink, which makes it much easier to route.

With PAINLESS harnesses, most of the work is done for you.

PAINLESS fuel injection harnesses are pre-terminated by special OEM tooled machines. All fuseblock terminals, ECM terminals and splices are pneumatically crimped for reliability and consistency. Our engineers design each fuel injection harness to be easily tailored to fit your vehicle. Every breakout is grouped and labeled which drastically reduces the amount of time it takes to install a harness. Each harness is OEM color coded and comes with a comprehensive, step-by-step installation manual. If you have a question it's nice to know that you are just a phone call away from Painess Tech Support at 1-800-423-9696.

The Painless quality and tech support is the best in the industry!

We are so confident in the quality of our product that we back our harnesses with a LIFETIME GUARANTEE; a promise of quality that is unmatched anywhere. This is a culmination of 20 years of market leadership, quality design and manufacturing innovative automotive products. This means you can be confident that when you install a PAINLESS chassis or fuel injection harness, you're wiring your car with the very best there is!

Download our Fuel Injection Chart and find the right harness for your build!





Click here for a printable version
Painless Fuel Injection Harness 03-05 Cummins Diesel 4.9L Manual Transmission

Item #: PP60250
Painless Fuel Injection Harness for 2003-2005 Cummins Diesel 4.9L Manual Transmission. The first aftermarket harness to ... 
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Painless Fuel Injection Harness 00-02 GM Gen III 4.8,5.3 & 6.0L Throttle By Wire Std. Length

Item #: PP60219
GEN III THROTTLE-BY-WIRE EFI ENGINE HARNESS Fits all 2000-20002 General Motors 4.8L, 5.3L and 6.0L engines with throttl... 
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[ read more ]


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Painless Fuel Injection Harness 86-95 Ford 5.0L Std. Length

Item #: PP60510
Painless Fuel Injection Harness for 1986-1995 Ford 5.0L H.O. Mass Air flow engine. (Standard Length)
For insta... 
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Painless Fuel Throttle Body Injection Harness 86-93 GM 4.3L V6; 5.0,5.7 & 7.4L V8 Std. Length

Item #: PP60101
If you run the factory ECM you will appreciate the ease and simplicity of using a Painless 60101 Fuel Injection wiring h... 
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[ read more ]


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Painless Fuel Tuned Port Injection Harness 85-89 GM Early V8 TPI (MAF) Std. Length

Item #: PP60102
The GM Tuned Port Fuel Injection system this Painless Performance®™ harness operates is a perfect upgrade for ... 
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Painless Fuel Tuned Port Injection Harness 90-92 GM V8 TPI (MAP) Std. Length

Item #: PP60103
Painless Fuel Tuned Port Injection Harness 90-92 GM V8 TPI (MAP) Standard Length.
The GM Tuned Port Fuel Inject... 
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[ read more ]


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Painless Fuel Throttle Body Injection Harness 86-93 GM 4.3L V6; 5.0,5.7 & 7.4L V8 Extra Length

Item #: PP60201
Painless Fuel injection wiring harness with extra length. Fits 1986-1993, GM 4.3, 5.0, 5.7, and 7.4L with TBI.
I... 
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Painless Fuel Tuned Port Injection Harness 85-89 GM Early V8 TPI (MAF) Extra Length

Item #: PP60202
Painless Fuel injection wiring harness. Fits 1985-1989, GM 5.0 and 5.7L with TPI.
If you run the factory ECM you... 
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[ read more ]


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Painless Fuel Tuned Port Injection Harness 90-92 GM V8 TPI (MAP) Extra Length

Item #: PP60203
Painless Fuel injection wiring harness with extra length. Fits 1990-1992, 5.0 and 5.7L with TPI.
If you run the... 
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[ read more ]


Quantity: Increase Quantity Decrease Quantity 


Painless Fuel Injection Harness 92-95 GM Vortec 4.3L CMFI V6 Harness

Item #: PP60210
Painless 60210 Fuel injection wiring harness. Fits 1992-1995, GM 4.3L Vortec V6.
If you run the factory ECM you ... 
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[ read more ]


Quantity: Increase Quantity Decrease Quantity 


Painless Fuel Injection Harness 96-00 GM Vortec 7.4L V8 MPFI Std. Length

Item #: PP60211
Painless fuel injection wiring harness. Fits 1996-2000, GM Vortec 7.4L V8 MPFI big block.
If you run the factory... 
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[ read more ]


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Painless Fuel Injection Harness 96-99 GM Vortec 5.0 & 5.7L V8 CMFI Std. Length

Item #: PP60212
Painless Fuel Injection Harness Fits 1996-1999, GM 5.0L and 5.7L Vortec V8s.
If you run the factory ECM you wi... 
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[ read more ]


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Painless Fuel Injection Harness 96-99 GM Vortec 5.0 & 5.7L V8 CMFI Extra Length

Item #: PP60213
Painless Fuel Injection Harnesswith Extra Length. Fits 1996-1999, GM 5.0L and 5.7L Vortec V8s
If you run the fac... 
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[ read more ]


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Painless Fuel Injection Harness 96-99 GM Vortec 4.3L V6 CMFI Std. Length

Item #: PP60214
Painless Fuel Injection Harness. Fits 1996-1999, GM 4.3L Vortec V-6
If you run the factory ECM you will appreci... 
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[ read more ]


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Painless Fuel Injection Harness 96-99 GM Vortec 4.3L V6 CMFI Extra Length

Item #: PP60215
Painless Fuel Injection Harness with extra length. Fits 1996-1999, GM 4.3L Vortec V-6
If you run the factory EC... 
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[ read more ]


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Painless Fuel Injection Harness 96-00 GM Vortec 7.4L V8 MPFI Extra Length

Item #: PP60216
Painless fuel injection wiring harness with extra length. Fits 1996-2000, GM 7.4L big block.
If you run the fac... 
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[ read more ]


Quantity: Increase Quantity Decrease Quantity 


Painless Fuel Injection Harness 99 & UP GM Gen III 4.8,5.3 & 6.0L Std Length

Item #: PP60217
Painless Sequential Fuel Injection Harness Fits 1999 and later, GM 4.8L, 5.3L, and 6.0L Vortec V8s
If you run ... 
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Painless Fuel Injection Harness 99 & UP GM Gen III 4.8,5.3 & 6.0L Extra Length

Item #: PP60218
Painless Sequential Fuel Injection Harness with extra length. Fits 1999 and later, GM 4.8L, 5.3L, and 6.0LVortec V8s ... 
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Painless Fuel Injection Harness 00-02 GM Gen III 4.8,5.3 & 6.0L Throttle By Wire Extra Lengt

Item #: PP60220
Painless Extra Length Wiring Harness Fits 2000-2002, GM Gen III 4.8, 5.3, 6.0L, with electronic throttle.
This ... 
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Painless Fuel Injection Harness 03-06 GM Gen III 4.8,5.3 & 6.0L Throttle By Wire Std. Length

Item #: PP60221
Painless Fuel Injection Harness For use with 2003-2006, GM 4.9L, 5.3L, and 6.0L engines
This is the most up to ... 
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Painless Fuel Injection Harness 92-97 GM LT-1 Std. Length

Item #: PP60502
Painless fuel injection wiring harness Fits 1994-1995 GM LT1.
If you run the factory ECM you will appreciate th... 
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[ read more ]


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Painless Fuel Injection Harness 92-97 GM LT-1 Extra Length

Item #: PP60505
Painless 60505 fuel injection wiring harness with extra length fits 1994-1995 GM LT1.
If you run the factory EC... 
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[ read more ]


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Painless Fuel Injection Harness 97-98 GM LS-1 Std. Length

Item #: PP60506
Painless Fuel Injection Harness 97-98 GM LS-1 Std. Length
For installations of a mechanical throttle body LS1 /... 
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[ read more ]


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Painless Fuel Injection Harness 97-98 GM LS-1 Extra Length

Item #: PP60507
Painless Sequential Fuel Injection Harness 97-98 GM LS-1 Extra Length
For installations of a mechanical throttl... 
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[ read more ]


Quantity: Increase Quantity Decrease Quantity 


Painless Fuel Injection Harness 99-02 GM LS-1 Std. Length

Item #: PP60508
Painless Fuel injection wiring harness Fits 1999-2002, GM LS1
For installations of a mechanical throttle body L... 
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[ read more ]


Quantity: Increase Quantity Decrease Quantity 


Painless Fuel Injection Harness 99-02 GM LS-1 Extra Length

Item #: PP60509
Painless Fuel injection wiring harness with extra length Fits 1999-2002, GM LS1
For installations of a mechanic... 
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[ read more ]


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Painless Fuel Injection Harness 86-95 Ford 5.0L Extra Length (6005)

Item #: PP60511
Painless Fuel injection wiring harness with extra length Fits 1986-1995, Ford 5.0L V8s
If you run the factory E... 
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[ read more ]


Quantity: Increase Quantity Decrease Quantity 


Painless Fuel Injection Harness 05 GM LS-2 Std. Length

Item #: PP60520
Painless Fuel injection wiring harness Fits 2005 GM LS2.
If you run the factory ECM you will appreciate the eas... 
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[ read more ]


Quantity: Increase Quantity Decrease Quantity 


Painless Fuel Injection Harness 05 GM LS-2 Extra Length

Item #: PP60521
Painless Fuel injection wiring harness with extra length Fits 2005 GM LS2.
If you run the factory ECM you will a... 
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[ read more ]


Quantity: Increase Quantity Decrease Quantity 


Painless Fuel Injection Harness 97-04 GM LS-1 Throttle By Wire Std Length

Item #: PP60522
Painless Sequential fuel injection wiring harness Fits 1997-2004, GM LS1
If you run the factory ECM you will a... 
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[ read more ]


Quantity: Increase Quantity Decrease Quantity 


Painless Fuel Injection Harness 97-04 GM LS-1 Throttle By Wire Extra Length

Item #: PP60523
Painless Sequential fuel injection wiring harness Fits 1997-2004, GM LS1 Throttle By Wire
If you run the factor... 
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[ read more ]


Quantity: Increase Quantity Decrease Quantity 


Painless Fuel Injection Harness 06-08 GM LS-2/3/7 Throttle By Wire Std. Length

Item #: PP60524
Painless Fuel Injection Wiring Harness For use with 2006-2008, GM LS2, LS3, and LS7 engines
This is the most up ... 
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Painless Fuel Injection Harness 97-04 GM LS-1 Integrated EFI/Chassis Manual Throttle

Item #: PP60608
Painless Integrated LS1 Chassis Harness for 1997-2004 GM EFI
Painless Performance Products now has the solution ... 
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Painless Fuel Injection Harness 96-06 GM Gen III 4.8,5.3 & 6.0L EFI/Chassis Manual Throttle

Item #: PP60617
Painless Fuel Injection Harness for 1996-2006 GM Gen III 4.8,5.3 & 6.0L engines
Rewire your project truck or car... 
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