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Carburetor Gaskets

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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...

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 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 27

Carburetor Gasket; Holley 4150 Carburetor Gasket; 1 pc.

Part Number: NEX-16175

4.2 out of 5 stars ( 5 )

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CARB BASE GASKET, 4150, OPEN, 5 PACK

Part Number: MOR-93187

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

Part Number: DEM-200035

4.88 out of 5 stars ( 16 )

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Gaskets, Carburetor Isolator, Square Bore, 4-Hole, .250 in. Thick, Each

Part Number: SCE-352

4.0 out of 5 stars ( 6 )

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Carburetor Mounting Gasket, Cellulose Composition, 4-Barrel, Dominator 4500, Open Center, Each

Part Number: MOR-93310

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N/S 4 Hole Flan. Gasket 4500 2 1/8"

Part Number: QFT-8-1106QFT

5.0 out of 5 stars ( 2 )

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N/S 4 Hole Flan. Gasket 4150

Part Number: QFT-8-1105QFT

3.33 out of 5 stars ( 6 )

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Carburetor Gaskets, Insulator Gasket, 4-Barrel, Spread Bore, 0.625 in. Thick, Phenolic, Models 4165, 4175, Quadra-Jet, Each

Part Number: HLY-108-37

4.57 out of 5 stars ( 7 )

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Carburetor Mounting Gasket, Cellulose, Nitrile Composition, 4-Barrel, Square Bore, Open Center, Each

Part Number: TRD-2069

4.5 out of 5 stars ( 6 )

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Carburetor Base Gasket, 4-barrel, Square Bore Flange, Open Center Style, Paper, 0.063 in. Thick, Each

Part Number: QFT-8-102QFT

3.0 out of 5 stars ( 2 )

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Carburetor Mounting Gasket, Cellulose, Nitrile, 4-Hole Perforated to Open, 4500 Dominator, .032 in. Thick

Part Number: TRD-2283

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Carburetor Mounting Gasket, Cellulose, Nitrile, 4-Barrel, Square Bore, 4-Hole, .032 in. Thick, Each

Part Number: TRD-2033

5.0 out of 5 stars ( 2 )

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Carburetor Base Gasket, Holley 2-barrel Flange, 2-hole Opening Style, Paper, 0.063 in. Thick, Each

Part Number: QFT-8-100QFT

4.5 out of 5 stars ( 2 )

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Gasket, Carburetor Base, Cellulose/Nitrile Composition, Spread Bore, Open Center, Each

Part Number: TRD-2078

5.0 out of 5 stars ( 3 )

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Carburetor Base Plate Gasket, Open Center, Dominator, 4500, Composite, 0.063 in., Pair

Part Number: QFT-8-1104QFT

1.67 out of 5 stars ( 3 )

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Carburetor Mounting Gasket, Nitrile Rubber Composite, 4-Barrel, Quadrajet, 4-Hole, .032 in. Thick, Each

Part Number: TRD-2070

4.88 out of 5 stars ( 8 )

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Carburetor Mounting Gasket, Composite, 4-Barrel, Square Bore, Open Center, .045 in. Thick, Each

Part Number: KYS-100-7777

5.0 out of 5 stars ( 5 )

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Carburetor Base Gasket, 4-Barrel Dominator, 4-hole Style, Paper with Silicone Coating, 0.062 in. Thick, Each

Part Number: QFT-8-1107QFT

5.0 out of 5 stars ( 1 )

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

Part Number: MOR-93300

1.0 out of 5 stars ( 1 )

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Carburetor Gasket; Q-Jet, Spreadbore Carburetor. Gasket; 1 pc.

Part Number: NEX-16177

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Carburetor Base Gasket, 4-barrel, Square Bore Flange, 4-hole Style, Paper, 0.063 in. Thick, Each

Part Number: QFT-8-105QFT

3.67 out of 5 stars ( 3 )

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Carburetor Base Gasket, Quadrajet, Open Center

Part Number: MOR-93312

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Carburetor Base Gasket Carter Thermoquad, ported

Part Number: TRD-2072

5.0 out of 5 stars ( 1 )

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CARB BASE GASKET, 4500, OPEN, 5 PACK

Part Number: MOR-93188

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Carburetor Mounting Gasket, Nitrile Rubber Composite, Holley 2-Barrel, Open Center, .032 in. Thick, Each

Part Number: TRD-2067

5.0 out of 5 stars ( 1 )

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