FAST wideband O2 wiring harnesses are your connections to air/fuel monitoring. When you need gauge accessories to keep the information flowing in your XFI system, FAST wideband O2 wiring harnesses will fill your requirements.

More From This Category

Rostra Transmission External Repair Harness, E40D (4 SPD RWD 1989-1998), Ford, Lincoln, 1989-1994

Rostra Transmission External Repair Harness, E40D (4 SPD RWD 1989-1998), Ford, Lincoln, 1989-1994

$64.37

Haltech Wiring Harnesses, Elite ECU Terminated Engine Harnesses, Elite 2000/2500 Toyota 2JZ Terminated Engine Harness, Kit

Haltech Wiring Harnesses, Elite ECU Terminated Engine Harnesses, Elite 2000/2500 Toyota 2JZ Terminated Engine Harness, Kit

$1,299.00

Holley EFI MAIN HARNESS, Holley HP, Dominator, 99-04 For Ford MODULAR

Holley EFI MAIN HARNESS, Holley HP, Dominator, 99-04 For Ford MODULAR

$1,544.16

Holley EFI Engine Management Systems HP EFI ECU Kit Universal Un-terminated Ignition Adapter Harness NTK Holley Each

Holley EFI Engine Management Systems HP EFI ECU Kit Universal Un-terminated Ignition Adapter Harness NTK Holley Each

$5,437.16

Holley EFI Coil Adapter Harness, Hemi V8 Ignition, Connect To Early Waste Spark Coils, For Chrysler, For Dodge, Holley, Each

Holley EFI Coil Adapter Harness, Hemi V8 Ignition, Connect To Early Waste Spark Coils, For Chrysler, For Dodge, Holley, Each

$355.63

Holley EFI USB Cable, Avenger HP, Dominator EFI, Each

Holley EFI USB Cable, Avenger HP, Dominator EFI, Each

$173.94