EFI Kits, Fuel Injectors, Throttle Bodies & More

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, Fuel Injection, Multi-Port, Mass Airflow, Chevy, 4.8/5.3/6.0L, Kit

Part Number: PRF-60221

3.93 out of 5 stars ( 14 )

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Wiring Harnesses, Holley EFI, Replacement, LS Style, 58X/4X Main Harness, Speed Density, for HP, Dominator, EFI Systems Only, Chevy, 6.0-7.0L, Each

Part Number: HLY-558-103

5.0 out of 5 stars ( 1 )

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Wiring Harness, Fuel Injection, GM, SFI, LS1, Engine Swap, Front Mount Fuse Block, Standard Length, Universal

Part Number: PRF-60508

4.8 out of 5 stars ( 5 )

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Wiring Harnesses, Holley EFI, Replacement, LS1/6, 24X/1X Main Harness, Mass Airflow Metered, for HP, Dominator, EFI Systems Only, Chevy, 5.7L, Each

Part Number: HLY-558-102

5.0 out of 5 stars ( 4 )

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Wiring Harness, Fuel Injection System, Standalone, Drive-By-Cable, LS1, Kit

Part Number: TSN-WH1201

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Wiring Harness, Fuel Injection, Mechanical Throttle Body, Chevy, Small Block, Each

Part Number: PRF-60617

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Wiring Harness, Fuel Injection System, Standalone, Drive-By-Cable, LS1, Kit

Part Number: TSN-WH1200

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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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Engine Wiring Harness, Engine Swap, Front Fuse Block, Extra-Long Length, Chevy, 5.7L LS1, Kit

Part Number: PRF-60509

4.83 out of 5 stars ( 6 )

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Wiring Harness, Multi-port Injection, Mass Airflow Meter, LS3 w/4L65E Trans Only, Throttle by Wire, Chevy, Kit

Part Number: PRF-60524

3.0 out of 5 stars ( 1 )

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Wiring Harness, Fuel Injection, Multi-Port, Mass Airflow, Chevy, 5.7L, Each

Part Number: PRF-60608

2.0 out of 5 stars ( 1 )

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Wiring Harness, Fuel Injection System, Standalone, Drive-By-Wire, LS1, Kit

Part Number: TSN-WH1210

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Fuel Injector O-Rings, Seal Kit to service 8 Fuel Injectors. Includes Orings, Filter Baskets and Pintle Caps..

Part Number: URM-5-8

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Throttle Body Spacers, 1.000 in. Thickness, 92.00mm Venturi Diameter, Billet Aluminum, Natural, Chevrolet, 6.2L LS3, 6.2L LSA, Kit

Part Number: ICB-551757-1

5.0 out of 5 stars ( 1 )

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Wiring Harnesses, Holley EFI, Main Harness, 58X LS TBI, for Terminator, Terminator Stealth, Throttle Body Systems, Chevy, Each

Part Number: HLY-558-112

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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 Injector O-Rings, Seal Kit to service 8 Fuel Injectors. Includes Orings, Filter Baskets, Pintle Caps and

Part Number: URM-2-8

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Throttle Body Spacers, 0.500 in. Thickness, 92.00mm Venturi Diameter, Billet Aluminum, Natural, Chevrolet, 6.2L LS3, 6.2L LSA, Kit

Part Number: ICB-551757-5

4.0 out of 5 stars ( 2 )

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Fuel Injector O-Rings, Seal Kit to service 8 Fuel Injectors. Includes Orings and Filter Baskets.

Part Number: URM-4-8

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Fuel Injection System, Nitro-Cast LS3 EFI, 1000 HP, 102mm Throttle Body, 80lb. Injectors, Cable Driven, with Transmission Controller, Chevy, Kit

Part Number: FIF-73308

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Fuel Injection System Wiring Harnesses, Holley EFI, GM LS 58X Crank Sensor, Power, Bosch Injector, Main Harnesses, for HP, Dominator ECUs, Kit

Part Number: HLY-558-502

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Estimated Ship Date: Dec 15, 2025 if ordered today

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Engine Wiring Harness, Engine Swap, Front Fuse Block, Standard Length, Chevy, LS2, Kit

Part Number: PRF-60520

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Wiring Harnesses, Holley EFI, Main Harness, 24X LS TBI, for Terminator, Terminator Stealth, Throttle Body Systems, Chevy, Each

Part Number: HLY-558-111

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Estimated Ship Date: Dec 15, 2025 if ordered today

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Fuel Injector O-Rings, Seal Kit to service 6 Fuel Injectors. Includes Orings, Filter Baskets, Pintle Caps and

Part Number: URM-2-6

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Estimated Ship Date: Jan 28, 2026 if ordered today

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