Throttle Body Gaskets

Throttle Body Gaskets: the seal between the intake and the throttle body

A throttle body gasket is the flat seal that sits between the throttle body and the intake manifold or elbow. Its job is simple but not optional: it keeps the air flowing through the throttle body from leaking out at the flange, so the engine draws the metered air it expects and idle stays clean. Whenever you pull a throttle body to clean it, swap to a larger bore, or install a different intake, you replace the throttle body gaskets rather than reuse an old, crushed one. A reused gasket is the usual cause of a rough idle or a vacuum leak after the job is buttoned up.

What ThreePiece stocks

This category holds 7 products from 4 brands: Cometic Gasket (three in the range), Skunk2 Racing (two), BBK and BLOX Racing (one each). Current prices run from $21 to $39 for what is in stock right now, not a locked-in promise. Fitment data on the sampled products points at Mazda, GM and Dodge applications, with named vehicles including the Mazda Miata, GM 305 and Dodge HEMI across a 1985 to 2023 year span.

How to choose

Match the gasket to your throttle body bore and application first, then decide on style. If you run a first- or second-gen Miata, the Skunk2 NA 64mm kit and Skunk2 NB 64mm kit are bore-specific for that chassis. LT1 owners with the twin-throttle setup want the BBK 85-97 GM 305/350 twin 58mm kit. On the Dodge side, the Cometic 5.7/6.1L HEMI gasket covers the common truck and car HEMI, while the Cometic Hellcat 105mm .032in gasket is the large-bore Hellcat part. If you are building a tuner intake and need a generic cast-flange fit, the BLOX 70mm cast gasket is the option. The trade-off is straightforward: vehicle-specific kits drop straight in with no guesswork, while a generic gasket gives flexibility if your setup is non-stock but needs a bore-size check before you buy.

What else you need with it

A throttle body gasket rarely goes in alone. If you are into the intake, look at Gasket Kits for the rest of the seals in one box, and Head Gaskets if the job runs deeper. Plumbing and hard-line work pull in Fittings and Adapters, and if you are refreshing fuel delivery at the same time, browse Fuel Pumps. All of these sit under the broader Engine Components section.

Fitment help and ordering

Not sure which bore or year your throttle body takes? Call fitment help at 813-535-5801 or reach us through Contact Us before you order. Every order ships free, and Affirm and Katapult financing is available at checkout.

Throttle Body Gaskets: the seal between the intake and the throttle body

A throttle body gasket is the flat seal that sits between the throttle body and the intake manifold or elbow. Its job is simple but not optional: it keeps the air flowing through the throttle body from leaking out at the flange, so the engine draws the metered air it expects and idle stays clean. Whenever you pull a throttle body to clean it, swap to a larger bore, or install a different intake, you replace the throttle body gaskets rather than reuse an old, crushed one. A reused gasket is the usual cause of a rough idle or a vacuum leak after the job is buttoned up.

What ThreePiece stocks

This category holds 7 products from 4 brands: Cometic Gasket (three in the range), Skunk2 Racing (two), BBK and BLOX Racing (one each). Current prices run from $21 to $39 for what is in stock right now, not a locked-in promise. Fitment data on the sampled products points at Mazda, GM and Dodge applications, with named vehicles including the Mazda Miata, GM 305 and Dodge HEMI across a 1985 to 2023 year span.

How to choose

Match the gasket to your throttle body bore and application first, then decide on style. If you run a first- or second-gen Miata, the Skunk2 NA 64mm kit and Skunk2 NB 64mm kit are bore-specific for that chassis. LT1 owners with the twin-throttle setup want the BBK 85-97 GM 305/350 twin 58mm kit. On the Dodge side, the Cometic 5.7/6.1L HEMI gasket covers the common truck and car HEMI, while the Cometic Hellcat 105mm .032in gasket is the large-bore Hellcat part. If you are building a tuner intake and need a generic cast-flange fit, the BLOX 70mm cast gasket is the option. The trade-off is straightforward: vehicle-specific kits drop straight in with no guesswork, while a generic gasket gives flexibility if your setup is non-stock but needs a bore-size check before you buy.

What else you need with it

A throttle body gasket rarely goes in alone. If you are into the intake, look at Gasket Kits for the rest of the seals in one box, and Head Gaskets if the job runs deeper. Plumbing and hard-line work pull in Fittings and Adapters, and if you are refreshing fuel delivery at the same time, browse Fuel Pumps. All of these sit under the broader Engine Components section.

Fitment help and ordering

Not sure which bore or year your throttle body takes? Call fitment help at 813-535-5801 or reach us through Contact Us before you order. Every order ships free, and Affirm and Katapult financing is available at checkout.