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Carburetor Adapter Plate

You’ve got a squarebore carb and a spreadbore intake manifold

You’ve got a squarebore carb and a spreadbore intake manifold—no problem! A carburetor adapter fits between the bottom of the carb or throttle body and the top of the manifold, just like a carburetor spacer, making the combination work!

Summit Racing Equipment’s powerful website makes finding the right carb adapter simple. Just select your flange types and bolt patterns in the left-hand column, and you’ll narrow down your search results! Then you can find the material, height, and brand you want.

Top Brands

For a leak-free fit, get your carb adapter from a trusted manufacturer! Summit Racing only carries brands that our sales...

You’ve got a squarebore carb and a spreadbore intake manifold—no problem! A carburetor adapter fits between the bottom of the carb or throttle body and the top of the manifold, just like a carburetor spacer, making the combination work!

Summit Racing Equipment’s powerful website makes finding the right carb adapter simple. Just select your flange types and bolt patterns in the left-hand column, and you’ll narrow down your search results! Then you can find the material, height, and brand you want.

Top Brands

For a leak-free fit, get your carb adapter from a trusted manufacturer! Summit Racing only carries brands that our sales and tech enthusiasts would use on their own project vehicles, like Mr. Gasket, Edelbrock, Holley, Canton Racing Products, Brodix, Dart, and more, plus our own Summit Racing brand adapters.

Individual Parts

Results 1 - 25 of 27

Carburetor Adapter, 4-Hole, Square Bore Carburetor, Spread Bore Manifold, .850 in. Thick, Each

Part Number: EDL-2696

4.36 out of 5 stars ( 121 )

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Carburetor Adapter, Open Center, Square Bore Carburetor, Spread Bore Manifold, .750 in. Thick, Kit

Part Number: MRG-1932

4.44 out of 5 stars ( 43 )

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Carburetor Sealing Plate, Open Center, Square Bore Carburetor, Spread Bore Manifold, .063 in. Thick, Each

Part Number: EDL-2732

4.75 out of 5 stars ( 36 )

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Carburetor Sealing Plate, Open Center, Square Bore Carburetor, Spread Bore Manifold, .125 in. Thick, Each

Part Number: SUM-G1420

4.47 out of 5 stars ( 38 )

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Carburetor Adapter, Open Center, Spread Bore Carb To Square Bore 4-Barrel Manifold, 0.750 in. Thick, Kit

Part Number: EDL-2692

4.25 out of 5 stars ( 8 )

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Carburetor Adapter, 4-Hole, Square Bore Carb To Spread Bore Manifold, .850 in. Thick, Fuel Hose, Clamps, Kit

Part Number: EDL-2697

4.27 out of 5 stars ( 15 )

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Carburetor Sealing Plate, Open Center, Spread Bore Carburetor to Spread Bore Manifold, 0.100 in. Thick, Each

Part Number: EDL-2731

3.67 out of 5 stars ( 3 )

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Carburetor Adapters, Individual Venturi Ports, 1.00 in. Height, Aluminum, Black Anodized, Holley 2-barrel Carb Flange, Spread Bore 4-barrel, Each

Part Number: WEH-WM206100

Not Yet Reviewed

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Carburetor Adapter, 1.00 in. Height, Aluminum, Natural, Square Bore Carb Flange, Spread Bore Manifold Flange

Part Number: SPE-5765

3.0 out of 5 stars ( 6 )

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Carburetor Adapter, 2-Hole, Holley 2-Barrel Carburetor, Spread Bore Manifold, 1.00 in. Thick, Each

Part Number: SUM-G1407

3.83 out of 5 stars ( 6 )

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Carburetor Adapter, 4-Hole, Square Bore Carburetor, Spread Bore Manifold, .875 in. Thick, Each

Part Number: TRD-2034

4.4 out of 5 stars ( 10 )

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Carburetor Adapter, Open Center, Spread Bore Carburetor/4-Barrel Manifold, .063 in. Thick, Kit

Part Number: WND-9006

4.25 out of 5 stars ( 8 )

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Carburetor Adapter, Open Center, Dominator Carburetor, Square Bore Manifold, 2.00 in. Thick, Each

Part Number: MOR-65000

Not Yet Reviewed

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Carburetor Adapter, Aluminum, Natural, 2-Barrel Carburetor to 4-Barrel Manifold, 1.69 in. Bore, .750 in. Thick, Kit

Part Number: MOR-64966

5.0 out of 5 stars ( 5 )

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Carburetor Adapters, Open Center, 0.500 in. Height, Aluminum, Natural, Square Bore 4-barrel, Each

Part Number: QFT-300-6QFT

5.0 out of 5 stars ( 1 )

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Carburetor Adapter, 4-Barrel Carburetor to 4-Bolt 2-Barrell Manifold, Each

Part Number: SPE-5772

2.0 out of 5 stars ( 1 )

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Carburetor Adapter, Aluminum, Natural, Open Center, 4-Barrel Quadrajet Adapter, 2.00 in. Thick, Kit

Part Number: MOR-64960

5.0 out of 5 stars ( 1 )

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Carburetor Adapter, Competition, Aluminum, Q-Jet Carb To Square Bore Single Plane Intake, 0.75 in. Thick, Each

Part Number: EDL-2693

4.0 out of 5 stars ( 1 )

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Carburetor Adapter, Split Center, Sideways Mount, Square Bore Carburetor/4-Barrel Manifold, .480 in. Thick, Kit

Part Number: OFY-5585

Not Yet Reviewed

Estimated Ship Date: Aug 13, 2026 if ordered today

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Estimated Ship Date: Aug 13, 2026 if ordered today

Carburetor Adapter, Open Center, 4 in. Height, Aluminum, Natural, Holley 4150/4160 Square Bore, Each

Part Number: OFY-5497

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Aug 13, 2026 if ordered today

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Estimated Ship Date: Aug 13, 2026 if ordered today

Carburetor Adapters, Open Center, 0.750 in. Thick, Aluminum, Natural Finish, Hardware, Gaskets, 4150/4160 Mounting Flange, Kit

Part Number: HLY-17-6

1.0 out of 5 stars ( 1 )

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Carburetor Adapter, Open Center, .750 in. Thick, Each

Part Number: TRD-2066

4.13 out of 5 stars ( 8 )

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Carburetor Adapter, Open Center, 4-Barrel/2-Barrel, .938 in. Thick, Kit

Part Number: TRD-2065

3.5 out of 5 stars ( 8 )

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Carburetor Adapter, Holley 2-Barrel to Quadrajet 4-Barrel, Each

Part Number: MRG-1929MRG

4.2 out of 5 stars ( 5 )

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