Fuel Injection System Wiring Harnesses

Wiring Harness, Fuel Injection, for Engine Swaps, Multi-Port, Mass Airflow, with 10 Circuit Fuse Block/GM Colors, Chevy, LS 4.8, 5.3, 6.0L, Each

Part Number: PRF-60217

4.69 out of 5 stars ( 16 )

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Wiring Harness, Gen III Vortec, Chevy, 4.8/5.3/6.0L, Each

Part Number: PRF-60218

5.0 out of 5 stars ( 1 )

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Wiring Harness, Fuel Injection, Multi-Port, Mass Airflow, Chevy, 4.3L, V6, Each

Part Number: PRF-60214

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Wiring Harness, EFI Transplant, Multi-Port, Mass Airflow, Standard Length, Ford, Small Block, Each

Part Number: PRF-60510

4.38 out of 5 stars ( 13 )

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Fuel Injection System Wiring Harnesses, Holley EFI, Replacement, Main Harness, Terminator EFI Systems, Model 550-405, 550-406, Each

Part Number: HLY-558-414

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Wiring Harness, Fuel Injection, Standard Length, Throttle By Wire, Chevy, Pontiac, LS1, 5.7L, Kit

Part Number: PRF-60522

4.67 out of 5 stars ( 3 )

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Fuel Injection System Wiring Harnesses, Holley EFI, Terminator Stealth 2x4, Upgrade Main Harness, Plug-and-Play, Universal, Kit

Part Number: HLY-558-121

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Wiring Harness, EFI Transplant, Multi-Port, Mass Airflow, Extra-Long, Ford, Small Block, Each

Part Number: PRF-60511

5.0 out of 5 stars ( 2 )

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Wiring Harnesses, Holley EFI, Main Harness with Smart Coils, 7.3L Godzilla, Ford Each

Part Number: HLY-558-141

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Estimated Ship Date: Jan 21, 2026 if ordered today

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Wiring Harnesses, Holley EFI, Replacement Harness, Multi-Port, Speed Density Metered, for Avenger, HP, Dominator, EFI Systems, with Stealth Ram, Each

Part Number: HLY-558-101

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Estimated Ship Date: Jan 21, 2026 if ordered today

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Wiring Harnesses, Holley EFI, Main Harness with Stock Coils, 7.3L Godzilla, Ford Each

Part Number: HLY-558-140

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