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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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Carburetor Mounting Gaskets, Composite, 4-Barrel, Holley 4500 Series Dominator, Open Center, Set of 10
Part Number: SCE-3583
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Carburetor Mounting Gaskets, Composite, 4-Barrel, Holley 4500 Series Dominator, Open Center, Each
Part Number: SCE-3583-1
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Carburetor Mounting Gaskets, Composite, 4-Barrel, Holley 4500 Series Dominator, 4-Hole Center, Each
Part Number: SCE-3582-1
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Carburetor Mounting Gaskets, Composite, 4-Barrel, Holley 4100 Series Square Bore, 4-Hole Center, Each
Part Number: SCE-355-1
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Carburetor Mounting Gasket, Heat Insulator, Nitrile Rubber Composite, 4-Barrel, Square Bore, Each
Part Number: EDL-9266
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Carburetor Mounting Gasket, Heat Insulator, Nitrile Rubber Composite, 4-Barrel, Square Bore, Open Center, Each
Part Number: EDL-9265
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Gaskets, Carburetor Isolator, Square Bore, 4-Hole, .250 in. Thick, Each
Part Number: SCE-352
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Heat Insulator Gaskets, for EDL Dual-Quad Manifold Use, Nitrile Rubber Composite, Square Bore, 4-Hole, Kit
Part Number: EDL-9267
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Gasket, Carburetor Base, Composite, 4-Barrel, Square Bore, 4-Hole Center, Chevy, Each
Part Number: MAH-G14116
Not Yet Reviewed
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Carburetor Mounting Gasket
Part Number: FEL-9391
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Carburetor Mounting Gasket
Part Number: FEL-9770
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Carburetor Mounting Gasket, OEM Replacement, Ford, Early L Head, V8, Each
Part Number: FEL-9264
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Carburetor Mounting Gasket
Part Number: FEL-9249
Not Yet Reviewed
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Carburetor Gasket, Manifold to Adapter, Paper, Flathead, V8, Edelbrock Slingshot Manifold Only, Ford, Each
Part Number: EDL-8700
Not Yet Reviewed
Estimated Ship Date: Oct 20, 2025 if ordered today
Estimated Ship Date: Oct 20, 2025 if ordered today
Carburetor Mounting Gasket
Part Number: FEL-8013
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Carburetor Mounting Gasket
Part Number: FEL-9033
Not Yet Reviewed
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Carburetor Base Plate Gasket, 2-Hole, Paper, Carter 2-Barrel Flange, Each
Part Number: FEL-9093
Not Yet Reviewed
Estimated Ship Date: Oct 15, 2025 if ordered today
Estimated Ship Date: Oct 15, 2025 if ordered today
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Gasket, Carburetor Mounting, 2-hole, Composite, 2-barrel, Motorcraft 2150 Carb Flange, Ford, Lincoln, Mercury
Part Number: FEL-60716
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Carburetor Base Plate Gasket, 4-hole, Fiber, Square Bore Flange, Each
Part Number: FEL-60390
Estimated Ship Date: Tomorrow
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