Throttle Bodies

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Throttle Bodies: More Air Where the Tune Can Use It

A throttle body sits between your intake and the manifold, and its bore controls how much air the engine can pull in when the pedal is down. Fit a larger or freer-flowing unit and you open up airflow that a stock casting chokes off, which matters most once you've added a cam, a bigger intake, or forced induction. On drive-by-wire cars the throttle body also carries the electronic actuator, so the replacement has to match the plug and calibration your ECU expects. Getting the right throttle bodies for your combination is the difference between a clean gain and a car that needs to relearn its idle.

What ThreePiece Stocks

We currently list 108 throttle bodies across 11 brands, priced from $148 to $1,017 for what's in stock right now (not a locked price). The deepest ranges come from BBK (37 in our sample) and Skunk2 Racing (23), with meaningful counts from Granatelli Motor Sports, aFe, BLOX Racing, Ford Racing, and Grams Performance, plus units from Bosch, VMP Performance, and FAST.

Coverage runs across model years 1986 to 2025, with 59 of the listings carrying specific fitment data. Popular platforms include the Ford Mustang, Mazda Miata, Ford F-Series, Chevrolet Corvette, Audi A4, Toyota GR86, Subaru BRZ, Dodge Hellcat, Porsche 911, and Honda and Acura K-Series builds.

How to Choose

Bore size is the first decision. A big billet unit like the Ford Racing Mustang GT billet throttle body or the 65mm Cobra Jet billet aluminum throttle body is built for a heavily modified engine, and the top of the range is the supercharger-focused VMP Performance 108mm GT500/Raptor throttle body. If your build is naturally aspirated, something like the VMP Twinjet 67mm N/A throttle body or the FAST 102mm LS throttle body targets that use. For a Hemi or Hellcat, the Granatelli 105mm drive-by-wire throttle body keeps the electronic actuator the car needs. Match bore and mounting to your manifold, and plan on a tune to make the extra airflow usable rather than just present.

What Else You Need

Airflow gains lean out the mixture, so more throttle body usually means fuel work. Look at fuel pumps to keep supply ahead of demand, and use adapters and fittings to sort mounting and plumbing. If you're going in this deep, gasket kits and head gaskets are worth having on the bench. Browse everything under Engine Components to round out the job.

Fitment and Ordering

Confirm bore, mounting pattern, and drive-by-wire connector against your car before you buy. For help matching a unit to your platform, call our fitment line at 813-535-5801 or reach us through contact us. Every order ships with free shipping, and Affirm financing is available at checkout.

Throttle Bodies: More Air Where the Tune Can Use It

A throttle body sits between your intake and the manifold, and its bore controls how much air the engine can pull in when the pedal is down. Fit a larger or freer-flowing unit and you open up airflow that a stock casting chokes off, which matters most once you've added a cam, a bigger intake, or forced induction. On drive-by-wire cars the throttle body also carries the electronic actuator, so the replacement has to match the plug and calibration your ECU expects. Getting the right throttle bodies for your combination is the difference between a clean gain and a car that needs to relearn its idle.

What ThreePiece Stocks

We currently list 108 throttle bodies across 11 brands, priced from $148 to $1,017 for what's in stock right now (not a locked price). The deepest ranges come from BBK (37 in our sample) and Skunk2 Racing (23), with meaningful counts from Granatelli Motor Sports, aFe, BLOX Racing, Ford Racing, and Grams Performance, plus units from Bosch, VMP Performance, and FAST.

Coverage runs across model years 1986 to 2025, with 59 of the listings carrying specific fitment data. Popular platforms include the Ford Mustang, Mazda Miata, Ford F-Series, Chevrolet Corvette, Audi A4, Toyota GR86, Subaru BRZ, Dodge Hellcat, Porsche 911, and Honda and Acura K-Series builds.

How to Choose

Bore size is the first decision. A big billet unit like the Ford Racing Mustang GT billet throttle body or the 65mm Cobra Jet billet aluminum throttle body is built for a heavily modified engine, and the top of the range is the supercharger-focused VMP Performance 108mm GT500/Raptor throttle body. If your build is naturally aspirated, something like the VMP Twinjet 67mm N/A throttle body or the FAST 102mm LS throttle body targets that use. For a Hemi or Hellcat, the Granatelli 105mm drive-by-wire throttle body keeps the electronic actuator the car needs. Match bore and mounting to your manifold, and plan on a tune to make the extra airflow usable rather than just present.

What Else You Need

Airflow gains lean out the mixture, so more throttle body usually means fuel work. Look at fuel pumps to keep supply ahead of demand, and use adapters and fittings to sort mounting and plumbing. If you're going in this deep, gasket kits and head gaskets are worth having on the bench. Browse everything under Engine Components to round out the job.

Fitment and Ordering

Confirm bore, mounting pattern, and drive-by-wire connector against your car before you buy. For help matching a unit to your platform, call our fitment line at 813-535-5801 or reach us through contact us. Every order ships with free shipping, and Affirm financing is available at checkout.