Air/Fuel Delivery Parts for Carbureted & Fuel Injected Engines

Cram the right air/fuel ratio into your engine and you create incredible horsepower. Summit Racing has everything you need to find that mix, starting with carburetors...

Cram the right air/fuel ratio into your engine and you create incredible horsepower. Summit Racing has everything you need to find that mix, starting with carburetors for street to strip, plus intake manifolds ranging from stock-height replacements to hood-busting tunnel rams. If you’e ready to advance to fuel injection, we’ve got you covered with injectors, manifolds, fuel rails, sensors, and complete performance EFI conversion kits. We’ve also got cold air intakes, fuel pumps, fuel filters, superchargers, turbochargers, nitrous kits, methanol injection kits, hood scoops, and air filters—there’s no excuse for starving...

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Holley Terminator X Wideband Adapter Harnesses 558-463

Wiring Harnesses. Holley EFI, Replacement, Wideband O2 Adapter Harness, Terminator EFI Systems, Pre-Terminated, Plug-and-Play, Each

Part Number: HLY-558-463

5.0 out of 5 stars ( 2 )

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Summit Racing™ MAX-efi 500 Fuel Injection Systems SUM-240505

Fuel Injection System, MAX-efi 500 Self-Tuning, 500 HP, Throttle Body, ECM, Satin Black, Kit

Part Number: SUM-240505

4.09 out of 5 stars ( 69 )

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Holley Dominator EFI Auxiliary Harnesses 558-401

Fuel Injection Systems Wiring Harnesses, Dominator EFI, J2A Auxiliary Harness, MPFI, Speed Density/Throttle Metered, with Wideband O2 Sensor, Kit

Part Number: HLY-558-401

5.0 out of 5 stars ( 3 )

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Holley Pro-Jection Service Parts 534-199

Fuel Injection Components, Extension Cable, Wideband Oxygen Sensor, 4 ft. Long, Each

Part Number: HLY-534-199

5.0 out of 5 stars ( 1 )

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Holley EFI Systems Wiring Harnesses 550-616N

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, NTK O2, Wideband, Ford, Lincoln, Mercury, 2-valve, 4.6L, 5.4L, Kit

Part Number: HLY-550-616N

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

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

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Holley Sniper 2 EFI 650 HP Base Fuel Injection Systems 550-511-3XX

Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Black, 4150 Flange, 650 hp Max, 800 CFM, No Pump, 3.5 in. Display, Kit

Part Number: SNE-550-511-3XX

4.63 out of 5 stars ( 16 )

Estimated Ship Date: Today

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Holley Sniper 2 EFI 650 HP Inline Pump Fuel Injection Systems with Power Distribution Module 550-511-3PK

Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Black, 4150 Flange, 650 hp Max, 800 CFM, Inline Pump, PDM, 3.5 in. Display, Kit

Part Number: SNE-550-511-3PK

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Holley Sniper 2 EFI 650 HP Inline Pump Fuel Injection Systems 550-511-3XK

Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Black, 4150 Flange, 650 hp Max, 800 CFM, Inline Pump, 3.5 in. Display, Kit

Part Number: SNE-550-511-3XK

2.78 out of 5 stars ( 9 )

Estimated Ship Date: Today

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Holley Sniper 2 EFI 650 HP Inline Pump Fuel Injection Systems with Power Distribution Module 550-511-3PK-SBC

Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Black, 4150 Flange, 650 hp Max, 800 CFM, Inline Pump, PDM, 3.5 in. Display, Chevy, Kit

Part Number: SNE-5505113PKSBC

Not Yet Reviewed

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FiTech Go Street EFI 400 HP Self-Tuning Fuel Injection Systems 30003

Fuel Injection System, Go Street EFI 400HP Self-Tuning, Throttle Body, ECM, Kit

Part Number: FIF-30003

3.77 out of 5 stars ( 167 )

Estimated Ship Date: Today

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Holley Sniper 2 EFI 650 HP Inline Pump Fuel Injection Systems 550-510-3XK

Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Polished, 4150 Flange, 650 hp Max, 800 CFM, Inline Pump, 3.5 in. Display, Kit

Part Number: SNE-550-510-3XK

4.54 out of 5 stars ( 13 )

Estimated Ship Date: Today

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Holley Sniper 2 EFI 650 HP Base Fuel Injection Systems 550-510-3XX

Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Polished, 4150 Flange, 650 hp Max, 800 CFM, No Pump, 3.5 in. Display, Kit

Part Number: SNE-550-510-3XX

3.67 out of 5 stars ( 12 )

Estimated Ship Date: Today

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Holley Sniper 2 EFI 650 HP Base Fuel Injection Systems with Power Distribution Module 550-511-BPX-SBC

Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Black, 4150 Flange, 650 hp Max, 800 CFM, No Pump, PDM, Bluetooth, Chevy, Kit

Part Number: SNE-550511BPXSBC

5.0 out of 5 stars ( 2 )

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Holley Sniper EFI 2300 Two-Barrel Fuel Injection Systems for 1971 HORNET - 550-850K

Fuel Injection Systems, Sniper EFI, 2300, Throttle Body, Black, 2300 Flange, Injectors, Fuel Pump, Pressure Regulator, Harness, Tuner, Kit

Part Number: SNE-550-850K

4.2 out of 5 stars ( 10 )

Estimated Ship Date: Today

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Holley Sniper 2 EFI 650 HP Base Fuel Injection Systems with Power Distribution Module 550-510-3PX-SBC

Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Polished, 4150 Flange, 650 hp Max, 800 CFM, No Pump, PDM, 3.5 in. Display, Chevy, Kit

Part Number: SNE-5505103PXSBC

5.0 out of 5 stars ( 1 )

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Holley Sniper 2 EFI 650 HP Inline Pump Fuel Injection Systems with Power Distribution Module 550-511-5PK-SBC

Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Black, 4150 Flange, 650 hp Max, 800 CFM, Inline Pump, PDM, 5.0 in. Display, Chevy, Kit

Part Number: SNE-5505115PKSBC

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Holley Sniper EFI 2300 Two-Barrel Fuel Injection Systems 550-849K

Fuel Injection Systems, Sniper EFI, 2300, Throttle Body, Polished, 2300 Flange, Injectors, Fuel Pump, Pressure Regulator, Harness, Tuner, Kit

Part Number: SNE-550-849K

4.04 out of 5 stars ( 28 )

Estimated Ship Date: Today

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Holley Sniper 2 EFI 650 HP Base Fuel Injection Systems with Power Distribution Module 550-511-3PX

Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Black, 4150 Flange, 650 hp Max, 800 CFM, No Pump, PDM, 3.5 in. Display, Kit

Part Number: SNE-550-511-3PX

2.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Edelbrock Pro-Flo 4 EFI Systems 35760

Edelbrock Pro-Flo 4 EFI Systems 35760

Fuel Injection System, Pro-Flo 4, Self-Learning, Sequential Multi-Port, Satin, 450 HP Max, Pre 1986 Small Block Chevy, Kit

Part Number: EDL-35760

4.19 out of 5 stars ( 21 )

Estimated Ship Date: Today

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Holley Sniper EFI 2300 Two-Barrel Fuel Injection Systems 550-849

Fuel Injection Systems, Sniper EFI, 2300, Throttle Body, Polished, 2300 Flange, Fuel Injectors, Pressure Regulator, Harness, Tuner, Kit

Part Number: SNE-550-849

4.07 out of 5 stars ( 14 )

Estimated Ship Date: Today

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Holley Sniper 2 EFI 650 HP Inline Pump Fuel Injection Systems with Power Distribution Module 550-511-3PK-SBF

Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Black, 4150 Flange, 650 hp Max, 800 CFM, Inline Pump, PDM, 3.5 in. Display, Ford, Kit

Part Number: SNE-5505113PKSBF

Not Yet Reviewed

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Holley Sniper 2 EFI 650 HP Inline Pump Fuel Injection Systems with Power Distribution Module 550-510-3PK

Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Polished, 4150 Flange, 650 hp Max, 800 CFM, Inline Pump, PDM, 3.5 in. Display, Kit

Part Number: SNE-550-510-3PK

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Edelbrock Pro-Flo 4 EFI Systems 35950

Fuel Injection System, Pro-Flo 4, Self-Learning, Sequential Multi-Port, Satin, 550 HP Max, 351W Small Block Ford, Kit

Part Number: EDL-35950

4.31 out of 5 stars ( 13 )

Estimated Ship Date: Today

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Holley Sniper 2 EFI 650 HP Inline Pump Fuel Injection Systems with Power Distribution Module 550-510-3PK-SBC

Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Polished, 4150 Flange, 650 hp Max, 800 CFM, Inline Pump, PDM, 3.5 in. Display, Chevy, Kit

Part Number: SNE-5505103PKSBC

5.0 out of 5 stars ( 1 )

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