PAINLESS PERFORMANCE EFI

18 products

10% Off

2005-2006 GM LS2 EFI Harness – Throttle By Wire

$589.49

~~$654.99~~

Engine: 6.0L LS2 w/ 24X Crank Reluctor & 2X Cam ReluctorTrans.: 4L60E, T-56 Number of Circuits: 8 Fuses with 2 Ignition & 1 Fuel Pump RelayHarness Length: 4 Feet Between Engine and...

10% Off

1999-2006 GM Gen III 4.8/5.3/6.0L Integrated EFI & Chassis Harness – Mech. TB

$1,169.99

~~$1,299.99~~

Engine: 4.8L, 5.3L, 6.0L w/ Mechanical Throttle BodyTrans.: 4L60E Number of Circuits: 26 Fuse with 7 RelaysFuse Type: Mini Blade & Maxi FuseFirewall Passthrough: Multiple GrommetColor Co...

10% Off

1999-2006 GM Gen III 4.8/5.3/6.0L EFI Harness – Mechanical TB

$539.99

~~$599.99~~

Engine: 4.8L, 5.3L, 6.0L w/ Mechanical Throttle BodyTrans.: 4L60E, 4L65E, 4L70E, 4L80E, 4L85E, or manual Number of Circuits: 8 Fuses with Ignition, Fuel Pump & Air Pump RelaysHarness Lengt...

10% Off

1998-2004 GM LS1/LS6 EFI Extra Length Harness

$593.99

~~$659.99~~

Engine: 5.7L LS1 / LS6 w/ Cable Throttle BodyTrans.: 4L60E, 4L65E, 4L80E, T-56 Number of Circuits: 8 Fuses with 2 Ignition & 1 Fuel Pump RelayHarness Length: 8 Feet Between Engine and ECMFu...

10% Off

1997-2004 GM LS1/LS6 Integrated EFI & Chassis Harness – Mechanical TB

$1,169.99

~~$1,299.99~~

Engine: 5.7L LS1 / LS6 w/ Cable Throttle BodyTrans.: 4L60E Number of Circuits: 26 Fuse with 7 RelaysFuse Type: Mini Blade & Maxi FuseFirewall Passthrough: Multiple GrommetColor Code Based: ...

10% Off

1997-2004 GM LS1 EFI Harness – Throttle by Wire

$557.99

~~$619.99~~

Engine: 5.7L LS1 / LS6 w/ Throttle by WireTrans.: 4L60E, T-56 Number of Circuits: 8 Fuses with 2 Ignition & 1 Fuel Pump RelayHarness Length: 4 Feet Between Engine and ECMFuse Type: BladeFire...

10% Off

1996-99 GM Vortec 4.3L V6 (CMFI) Harness Std. Length

$584.99

~~$649.99~~

Engine: 4.3L Central Multi-Port Fuel InjectionTrans.: 4L60E Number of Circuits: 8 Fuses with 2 Ignition & 1 Fuel Pump RelayHarness Length: 4 Feet Between Engine and ECMFuse Type: BladeFirewal...

10% Off

1996-2000 GM Vortec 7.4L Big Block V8 Harness

$539.99

~~$599.99~~

Engine: 7.4LTrans.: 4L80E Number of Circuits: 8 Fuses with 2 Ignition & 1 Fuel Pump RelayHarness Length: 4 Feet Between Engine and ECMFuse Type: BladeFirewall Passthrough: GrommetColor Code Ba...

10% Off

$602.99

~~$669.99~~

Engine: 4.3L (V8), 5.7L Sequential Fuel InjectionTrans.: 4L60E Number of Circuits: 8 Fuses with Ignition, Fuel Pump & Air Pump RelaysHarness Length: 4 Feet Between Engine and ECMFuse Type: Blad...

10% Off

$670.49

~~$744.99~~

Engine: 4.3L (V8), 5.7L Sequential Fuel InjectionTrans.: 4L60E Number of Circuits: 8 Fuses with Ignition, Fuel Pump & Air Pump RelaysHarness Length: 8 Feet Between Engine and ECMFuse Type: Blad...

10% Off

1990-92 GM V8 TPI Harness (MAP) Std. Length

$458.99

~~$509.99~~

Engine: 5.0L, 5.7L Tuned Port Injection w/ Manifold Absolute Pressure Sensor (MAP)Trans.: 200-4R, 700-R4 and Other Non-Electronic Harness Length: 4 Feet Between Engine and ECMFuse Type: BladeFirewa...

10% Off

1990-92 GM V8 TPI Harness (MAP) Extra Length

$508.49

~~$564.99~~

Engine: 5.0L, 5.7L Tuned Port Injection w/ Manifold Absolute Pressure Sensor (MAP)Trans.: 200-4R, 700-R4 and Other Non-Electronic Harness Length: 8 Feet Between Engine and ECMFuse Type: BladeFirewa...

10% Off

1986-93 GM 4.3L V6; 5.0,5.7 & 7.4L V8 TBI Harness Std. Length

$382.49

~~$424.99~~

Engine: 4.3L, 5.0L, 5.7L, 7.4L Throttle Body Injected and Cross Fire InjectedTrans.: 200-4R, 700-R4 and Other Non-Electronic Harness Length: 4 Feet Between Engine and ECMFuse Type: BladeFirewall Pa...

10% Off

$512.99

~~$569.99~~

Engine: 5.7L LS1 / LS6 w/ Cable Throttle BodyTrans.: 4L60E, 4L65E, 4L80E, T-56 This harness is standalone and is not intended to replace the OEM engine wiring. Standalone harnesses are intended to...

10% Off

2008+ Gen IV LS3 EFI Harness - Throttle By Wire

$686.69

~~$762.99~~

Engine: LS3Trans.: 4L65E This harness is standalone and is not intended to replace the OEM engine wiring. Standalone harnesses are intended to run the designated engine & transmission only, ge...

10% Off

2007-2012 GM Gen IV 4.8-6.2L EFI Harness - Throttle by Wire

$747.89

~~$830.99~~

Engine: 4.8, 5.3, 6.0, 6.2LTrans.: 4L65E This harness is standalone and is not intended to replace the OEM engine wiring. Standalone harnesses are intended to run the designated engine & trans...