EFI Wiring Harness
  • 1986-93 GM 4.3/5.0/5.7/7.4L TBI


  • EFI Wiring Harness
  • 1985-89 GM 5.0L/5.7L TPI
  • Mass Air Flow


  • EFI Wiring Harness
  • 1990-92 GM 5.0L/5.7L TPI
  • MAP Or Speed Density


  • EFI Wiring Harness
  • 1996-99 GM Vortec 5.0L/5.7L V8


  • EFI Wiring Harness
  • 1996-99 GM Vortec 4.3L V6


  • EFI Wiring Harness
  • 1999-2006 GM Vortec 4.8/5.3/6.0L
  • Mechanical Throttle

  • Painless GM Fuel Injection Wiring Harnesses


    EFI Wiring Harness
  • 1999-2006 GM Vortec 4.8/5.3/6.0L
  • Mechanical Throttle
  • With 4 Extra Feet Of Wiring
  • Includes Free ECM Reflash With Purchase
  • $724.99
    Ships 09/02/16
    FREE Shipping

    EFI Wiring Harness
  • 2000-02 GM Vortec 4.8/5.3/6.0L
  • Throttle-by-Wire

  • EFI Wiring Harness
  • 2003-06 GM 4.8/5.3/6.0L
  • Painless GM Fuel Injection Wiring Harnesses


    EFI Wiring Harness
  • 2003-06 GM 4.8/5.3/6.0L
  • Throttle-by-Wire
  • Using Factory ECM
  • Will Work With Flex Fuel Engines
  • Includes Free ECM Reflash With Purchase
  • $949.99
    Ships Today
    FREE Shipping

    EFI Wiring Harness
  • 1992-97 GM LT1


  • EFI Wiring Harness
  • 1999-2002 GM LS1/LS6
  • Mechanical Throttle Body
  • Painless GM Fuel Injection Wiring Harnesses


    EFI Wiring Harness
  • 1999-2002 GM LS1/LS6
  • With 4L60E or T-56 Transmission
  • Mechanical Throttle Body
  • Includes Free ECM Reflash With Purchase
  • $624.99
    Ships Today
    FREE Shipping

    Painless GM Fuel Injection Wiring Harnesses


    EFI Wiring Harness
  • 1999-2002 GM LS1/LS6
  • With 4L60E or T-56 Transmission
  • Mechanical Throttle Body
  • With 4 Extra Feet Of Wiring
  • Includes Free ECM Reflash With Purchase
  • $674.99
    Ships Today
    FREE Shipping
    (1)

    EFI Wiring Harness
  • 1997-2004 GM LS1/LS6
  • Throttle-by-Wire
  • Painless GM Fuel Injection Wiring Harnesses


    EFI Wiring Harness
  • 1997-2004 GM LS1/LS6
  • With 4L60E or T-56 Transmission
  • Throttle-by-Wire
  • Includes Free ECM Reflash With Purchase
  • $674.99
    Ships in 24hrs
    FREE Shipping
    (1)

    Painless GM Fuel Injection Wiring Harnesses


    EFI Wiring Harness
  • 1997-2004 GM LS1/LS6
  • With 4L60E or T-56 Transmission
  • Throttle-by-Wire
  • With 4 Extra Feet Of Wiring
  • Includes Free ECM Reflash With Purchase
  • $724.99
    Ships in 24hrs
    FREE Shipping