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FAST XFI Fuel Injector Harnesses

5.0 out of 5 stars 1 Customer Reviews

FAST XFI fuel injector wiring harnesses allow you to incorporate non-OEM fuel injector plugs into your stock wiring harness. They're designed to be used with XFI ECU and XFI main harness's only. Available for different types and sizes of engines, they make the installation of a different style of injector no problem.

Showing In Stock Items. Show All 10 Items.

Results 1 - 8 of 8

FAST XFI Fuel Injector Harnesses 301204

FAST XFI Fuel Injector Harnesses 301204

FAST XFI Fuel Injector Harnesses 301204

Wiring Harness, Fuel Injector, FAST XFI, Ford, Each

Part Number: FST-301204

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

FAST XFI Fuel Injector Harnesses 301200

FAST XFI Fuel Injector Harnesses 301200

FAST XFI Fuel Injector Harnesses 301200

Wiring Harness, Fuel Injector, FAST XFI, Chevy, 18436572 Firing Order, Each

Part Number: FST-301200

Not Yet Reviewed

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

FAST XFI Fuel Injector Harnesses 301203

FAST XFI Fuel Injector Harnesses 301203

FAST XFI Fuel Injector Harnesses 301203

Wiring Harness, Fuel Injector, FAST XFI, Ford, Each

Part Number: FST-301203

Not Yet Reviewed

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

FAST XFI Fuel Injector Harnesses 301201

FAST XFI Fuel Injector Harnesses 301201

FAST XFI Fuel Injector Harnesses 301201

Wiring Harness, Fuel Injector, FAST XFI, Chevy, 18736542 Firing Order, Each

Part Number: FST-301201

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

FAST XFI Fuel Injector Harnesses 301208

FAST XFI Fuel Injector Harnesses 301208

FAST XFI Fuel Injector Harnesses 301208

Wiring Harness, Fuel Injector, FAST XFI, Chrysler, Dodge, Ram, Each

Part Number: FST-301208

Not Yet Reviewed

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

FAST XFI Fuel Injector Harnesses 301210

FAST XFI Fuel Injector Harnesses 301210

FAST XFI Fuel Injector Harnesses 301210

Wiring Harness, Fuel Injector, FAST XFI, Ford, Each

Part Number: FST-301210

Not Yet Reviewed

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

FAST XFI Fuel Injector Harnesses 301209

FAST XFI Fuel Injector Harnesses 301209

FAST XFI Fuel Injector Harnesses 301209

INJECTOR HARNESS, LS2-18726543 FIRE

Part Number: FST-301209

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

FAST XFI Fuel Injector Harnesses 301205

FAST XFI Fuel Injector Harnesses 301205

FAST XFI Fuel Injector Harnesses 301205

Wiring Harness, Fuel Injector, Y-Adapter Harness, FAST XFI, Each

Part Number: FST-301205

Not Yet Reviewed

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

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