2004 Holley - Free Shipping on Orders Over $109 at Summit Racing

Holley EFI Systems Wiring Harnesses 550-617N

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, NTK O2 Sensor, Wideband, CANBUS, Ford, 4-valve, 4.6L, 5.4L, Kit

Part Number: HLY-550-617N

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Estimated Ship Date: Apr 15, 2026 if ordered today

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Estimated Ship Date: Apr 15, 2026 if ordered today

Water Pump Housings, Replacement, Cooling Manifold, Cast Aluminum, Satin Finish, for Mid-Mount Accessory System, 20-242, Chevy, 4.8-7.0L, Each

Part Number: HLY-97-307

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Estimated Ship Date: Apr 15, 2026 if ordered today

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Estimated Ship Date: Apr 15, 2026 if ordered today

Crank Trigger Wheels, Holley EFI, Replacement, 12-1X LS, Hall Effect, 6.56 in. Diameter, Aluminum, Silver, Chevy, Gen III, IV, Engines, Each

Part Number: HLY-556-183

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

Fuel Rails, Replacements, Lo-Ram Manifold, Dual Injector, Aluminum, Black Anodized, 3/4 in.-16 Inlet, Brackets, Hardware Included. Kit

Part Number: HLY-534-261

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today