Carburetor Gaskets

While it may look relatively simple, a carburetor base plate gasket does a few very important jobs. For starters, a good carb mounting gasket will ensure an airtight...

While it may look relatively simple, a carburetor base plate gasket does a few very important jobs. For starters, a good carb mounting gasket will ensure an airtight seal between the carburetor body and the intake manifold. A proper seal is very important here, because even a small leak can greatly affect the way your carbureted engine performs. A leaky carb seal also makes it really difficult to properly tune your carburetor and can contribute to a ton of other engine issues, including things like a poor idle, hesitation upon acceleration, and a loss of top-end power.

A carb mounting gasket can also act as a thermal barrier...

A carb mounting gasket can also act as a thermal barrier between a baking-hot intake manifold and the carburetor flange. By creating more isolation between those two mating surfaces, a good carb base plate gasket can mitigate a lot of heat soak coming from the engine—which can go a long way to prevent nagging fuel delivery problems like vapor lock.

And while carb mounting gasket thickness is often associated with its ability to block heat, there are a few other factors that need to be considered when selecting the thickness of your carburetor gasket. For instance, you may need to raise your carburetor body up a bit to provide room for vacuum ports or, conversely, opt for a thinner gasket to ensure proper hood clearance.

There are plenty of carburetor base plate gasket options available. To determine which one is right for your engine and carburetor, first determine the type of carburetor flange you’ve got. Common flange designs include square bore and spread bore, but there are several other flange layouts depending on the carburetor model you’re running.

Once you’ve determined the type of carburetor flange you’ve got (spread bore, square bore, etc.), then you can choose the overall carburetor base gasket thickness you need, followed by the type of material you want your carburetor gasket made from. Carb mounting gaskets are commonly made from paper, yet several nitrile rubber and other composite materials are popular as well. Each material has its pros and cons, so you may want to do a quick bit of research before selecting the best carburetor gasket material for your engine.

Spread bore or square bore, two barrel or four, when you’re ready to start shopping for carburetor base plate gaskets, use the intuitive filters on SummitRacing.com to pinpoint the precise one you need.

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Results 1 - 25 of 729

Summit Racing™ Carburetor Gaskets SUM-G1418

Carburetor Mounting Gasket, Paper, 4-Barrel, Square Bore, Open Center, Each

Part Number: SUM-G1418

4.84 out of 5 stars ( 104 )

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Summit Racing™ Carburetor Gaskets SUM-200051

Base Gasket, Composite, Square Bore, Open Center, Holley, Each

Part Number: SUM-200051

4.53 out of 5 stars ( 19 )

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Edelbrock Heat Insulator Gaskets 9266

Edelbrock Heat Insulator Gaskets 9266

Carburetor Mounting Gasket, Heat Insulator, Nitrile Rubber Composite, 4-Barrel, Square Bore, Each

Part Number: EDL-9266

4.74 out of 5 stars ( 135 )

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Fel-Pro Performance Carburetor Mounting Gaskets 1900

Carburetor Mounting Gasket, Paper, 4-Barrel, Square Bore, Open Center, Each

Part Number: FEL-1900

4.96 out of 5 stars ( 26 )

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Edelbrock Heat Insulator Gaskets 9265

Carburetor Mounting Gasket, Heat Insulator, Nitrile Rubber Composite, 4-Barrel, Square Bore, Open Center, Each

Part Number: EDL-9265

4.63 out of 5 stars ( 81 )

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Edelbrock Carburetor Base Gaskets 3899

Carburetor Base Gaskets, Nitrile Rubber Composite, 4-Barrel, Square Bore, Open Center, .032 in. Thick, Pair

Part Number: EDL-3899

4.97 out of 5 stars ( 39 )

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Holley Carburetor Base Plate Gaskets 108-124

Carburetor Gaskets, Base Plate, 4-Barrel, Open Center, 0.060 in. Thick, Composite Material, for Model 4150 Ultra, Each

Part Number: HLY-108-124

4.5 out of 5 stars ( 4 )

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Holley Carburetor Base Plate Gaskets 108-12

Carburetor Gaskets, Base Plate, 4-Barrel, Square Bore, Open Bore, 1.75 in. Bore, 0.313 in. Thick, Paper Material, Each

Part Number: HLY-108-12

4.76 out of 5 stars ( 29 )

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Summit Racing™ Carburetor Gaskets SUM-G1417

Carburetor Mounting Gasket, Paper, 4-Barrel, Square Bore, 4-Hole, Each

Part Number: SUM-G1417

4.17 out of 5 stars ( 29 )

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Mr. Gasket Carburetor Base Gaskets 54

Carburetor Mounting Gasket, 4-Barrel, Square Bore, Open Center, .063 in. Thick, Cellulose/Nitrile Composite, Each

Part Number: MRG-54

4.82 out of 5 stars ( 49 )

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SCE Carburetor Base Gaskets 3583

Carburetor Mounting Gaskets, Composite, 4-Barrel, Holley 4500 Series Dominator, Open Center, Set of 10

Part Number: SCE-3583

5.0 out of 5 stars ( 1 )

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Fel-Pro Performance Carburetor Mounting Gaskets 1903

Carburetor Mounting Gasket, Paper, 4-Barrel, Dominator, Open Center, Each

Part Number: FEL-1903

5.0 out of 5 stars ( 5 )

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Summit Racing™ Carburetor Gaskets SUM-M08005

Carburetor Base Plate Gasket, Open Center, Composite, 4-barrel, Square Bore, 0.250 in. Thickness, Designed To Fit New M2008 Carbs, Each

Part Number: SUM-M08005

4.64 out of 5 stars ( 14 )

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Fel-Pro Performance Carburetor Mounting Gaskets 1901

Carburetor Mounting Gasket, Paper, 4-Barrel, Square Bore, 4-Hole, Each

Part Number: FEL-1901

5.0 out of 5 stars ( 9 )

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Nitrous Express Carburetor Base Plate Gaskets 16175

Carburetor Gasket; Holley 4150 Carburetor Gasket; 1 pc.

Part Number: NEX-16175

4.0 out of 5 stars ( 4 )

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Mr. Gasket Carburetor Base Gaskets 55C

Gasket Carb. Holley and AFB Sqr. Bore 4 Hole 1/16" Thick Skin Pack

Part Number: MRG-55C

4.67 out of 5 stars ( 9 )

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Holley Carburetor Base Plate Gaskets 108-58

Carburetor Gaskets, Base Plate, Mounting, 4-Barrel, Square Bore, 4-Hole, 0.204 in. Thick, Fiber Material, Model 4150, 4160, 4180, Each

Part Number: HLY-108-58

5.0 out of 5 stars ( 5 )

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Fel-Pro Performance Carburetor Insulator Gaskets 1908

Carburetor Mounting Gasket, Insulator Gasket, Paper, 4-Barrel, Spread Bore, Open Center, 1/4 in. Thick, Each

Part Number: FEL-1908

5.0 out of 5 stars ( 6 )

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Mr. Gasket Carburetor Base Gaskets 58C

Carburetor Mounting Gasket, Cellulose/Nitrile Composition, 4-Barrel, 4500 Dominator, Open Center, .063 in. Thick, Each

Part Number: MRG-58C

5.0 out of 5 stars ( 2 )

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Demon Carburetion Carburetor Base Plate Gaskets 200035

Carburetor Mounting Gasket, Composite, 4-Barrel, Square Bore, Open Center, Set of 10

Part Number: DEM-200035

4.86 out of 5 stars ( 14 )

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SCE Carburetor Base Gaskets 3583-1

Carburetor Mounting Gaskets, Composite, 4-Barrel, Holley 4500 Series Dominator, Open Center, Each

Part Number: SCE-3583-1

5.0 out of 5 stars ( 2 )

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Mr. Gasket Carburetor Base Gaskets 54C

Gasket Carb. Holley & AFB Square Bore Open Center 1/16" Thick Skin Pack,Cellulose/Nitrile Composite, Each

Part Number: MRG-54C

4.45 out of 5 stars ( 20 )

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Summit Racing™ Carburetor Gaskets SUM-200056

Base Gaskets, Paper, Dominator, Open Center, Holley, Pair

Part Number: SUM-200056

5.0 out of 5 stars ( 2 )

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Holley Carburetor Base Plate Gaskets 108-10

Carburetor Gaskets, Base Plate, 4-Barrel, Square Bore, Open Center, 1.813 in. Bore Size, 0.063 in. Thick, Composite Material, Each

Part Number: HLY-108-10

4.96 out of 5 stars ( 23 )

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Edelbrock Carburetor Base Gaskets 12410

Carburetor Base Gaskets, Nitrile Rubber Composite, 4-Barrel, Square Bore, Open Center, .032 in. Thick, Kit

Part Number: EDL-12410

4.6 out of 5 stars ( 10 )

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