Intake Manifold Gaskets

Intake Manifold Gaskets: Seal the Air Path, Keep the Vacuum Honest

The intake manifold gasket sits between the manifold and the cylinder head, sealing the runners so every bit of metered air and fuel reaches the combustion chamber instead of leaking past the flange. When it fails you get a vacuum leak, a lean condition, rough idle and a check-engine light that no amount of tuning will fix. Anyone who has chased a hunting idle for an afternoon learns to replace intake manifold gaskets any time the manifold comes off. This is where you also find the manifolds themselves and the plenums that bolt on top, so you can seal a stock setup or step up to more airflow.

What ThreePiece stocks

There are 82 products in this category across 14 brands. The lineup is led by Skunk2 Racing (32 products) and BLOX Racing (11), with Torque Solution, Edelbrock, FAST, Ford Racing, Cometic Gasket, GReddy, Victor Reinz and Wagner Tuning filling out the rest. Current prices run from $29 to $2,508 for what is in stock right now, which is not a locked-in promise. The low end covers replacement gaskets; the top end is full manifolds like the Wagner Tuning Supra MK5 B58 manifold with integrated intercooler and the GReddy RB25DET plenum intake manifold.

How to choose

Decide first whether you need a seal or a part. If you are just reassembling, a gasket or a matched set is all you need. If you are chasing airflow, the manifolds here span platforms: the FAST LSX 103MM rectangular-port manifold and the FAST LSXR 102MM LS7 manifold cover Gen III LS builds, while the Edelbrock Victor EFI for Gen III Hemi suits late Chrysler V8s. Import turbo builders running a stock throttle body should look at the GReddy SR20DET short-runner plenum. The trade-off is simple: bigger plenums and larger throttle bores favor top-end power, while stock-style parts keep low-rpm response and bolt back up without extra work.

Fitment coverage

Of the 82 products, 42 carry fitment data spanning model years 1957 to 2024. Makes include Acura, Honda, Ford, Nissan, Mitsubishi, Hyundai, Subaru, Dodge, Chevrolet, Harley-Davidson, Mazda, Toyota and Scion, with common vehicles like the Acura Integra, Honda Civic, Ford Mustang, Mitsubishi Eclipse, Nissan 240SX and GT-R, Subaru STI and Dodge Viper. Confirm your exact application before ordering.

What else you need

Any time you break the intake seal, plan on the surrounding gaskets. Look at Gasket Kits for a complete set and Head Gaskets if the head is coming off too. A manifold swap often needs new Fittings and Adapters for vacuum and fuel lines, and it is a good time to check the Fuel Pumps. Browse the full Engine Components section for everything else.

Fitment help and ordering

Every order ships free, and Affirm and Katapult financing is available on the bigger manifolds. Not sure a part clears your setup? Call fitment help at 813-535-5801 or reach us through contact us before you buy.

Intake Manifold Gaskets: Seal the Air Path, Keep the Vacuum Honest

The intake manifold gasket sits between the manifold and the cylinder head, sealing the runners so every bit of metered air and fuel reaches the combustion chamber instead of leaking past the flange. When it fails you get a vacuum leak, a lean condition, rough idle and a check-engine light that no amount of tuning will fix. Anyone who has chased a hunting idle for an afternoon learns to replace intake manifold gaskets any time the manifold comes off. This is where you also find the manifolds themselves and the plenums that bolt on top, so you can seal a stock setup or step up to more airflow.

What ThreePiece stocks

There are 82 products in this category across 14 brands. The lineup is led by Skunk2 Racing (32 products) and BLOX Racing (11), with Torque Solution, Edelbrock, FAST, Ford Racing, Cometic Gasket, GReddy, Victor Reinz and Wagner Tuning filling out the rest. Current prices run from $29 to $2,508 for what is in stock right now, which is not a locked-in promise. The low end covers replacement gaskets; the top end is full manifolds like the Wagner Tuning Supra MK5 B58 manifold with integrated intercooler and the GReddy RB25DET plenum intake manifold.

How to choose

Decide first whether you need a seal or a part. If you are just reassembling, a gasket or a matched set is all you need. If you are chasing airflow, the manifolds here span platforms: the FAST LSX 103MM rectangular-port manifold and the FAST LSXR 102MM LS7 manifold cover Gen III LS builds, while the Edelbrock Victor EFI for Gen III Hemi suits late Chrysler V8s. Import turbo builders running a stock throttle body should look at the GReddy SR20DET short-runner plenum. The trade-off is simple: bigger plenums and larger throttle bores favor top-end power, while stock-style parts keep low-rpm response and bolt back up without extra work.

Fitment coverage

Of the 82 products, 42 carry fitment data spanning model years 1957 to 2024. Makes include Acura, Honda, Ford, Nissan, Mitsubishi, Hyundai, Subaru, Dodge, Chevrolet, Harley-Davidson, Mazda, Toyota and Scion, with common vehicles like the Acura Integra, Honda Civic, Ford Mustang, Mitsubishi Eclipse, Nissan 240SX and GT-R, Subaru STI and Dodge Viper. Confirm your exact application before ordering.

What else you need

Any time you break the intake seal, plan on the surrounding gaskets. Look at Gasket Kits for a complete set and Head Gaskets if the head is coming off too. A manifold swap often needs new Fittings and Adapters for vacuum and fuel lines, and it is a good time to check the Fuel Pumps. Browse the full Engine Components section for everything else.

Fitment help and ordering

Every order ships free, and Affirm and Katapult financing is available on the bigger manifolds. Not sure a part clears your setup? Call fitment help at 813-535-5801 or reach us through contact us before you buy.