Throttle Bodies

Throttle Bodies: More Airflow Where the Engine Meets the Intake

A throttle body is the valve that sits between your intake tract and the manifold, controlling how much air the engine can pull as you open the pedal. A larger bore flows more air at wide-open throttle, which is why builders fit throttle bodies when they have already opened up the rest of the intake and want the top end to breathe without a bottleneck. On a factory setup the stock casting is often the choke point once you add other airflow parts, so this is a common step alongside a bigger intake and matched tuning.

What ThreePiece Stocks

There are 24 throttle bodies in stock here across three brands: BLOX Racing with 13, BBK with 7, and aFe with 4. Prices currently run from $69 to $708 - that is the live range for what is on the shelf, not a fixed quote. The catalog covers a spread of platforms, with fitment data listing makes like Ford, Toyota, Dodge and Honda, and named vehicles including the Ford Mustang, Toyota 4Runner, Dodge Viper, Honda Civic and Toyota FJ Cruiser, over a model-year span of 1996 to 2023. Product names also reference Chevrolet, Jeep and Chrysler applications.

Concrete examples give you a feel for the range: the aFe 85mm billet unit for the 18-21 Mustang GT 5.0L sits at the top end, the BLOX Racing 103mm billet piece for the Chevrolet LS3 is a large-bore option, and the BBK 90mm Power Plus for 5.7/6.1/6.4 Hemi covers a wide slice of Mopar V8s. For EcoBoost owners there is the aFe 65mm EcoBoost throttle body, and the BLOX Racing 87mm billet Mustang 5.0 unit shows the anodized billet direction.

How to Choose

Start with fitment, not bore size - the throttle body has to match your engine's mounting and electronics, so pick the one listed for your platform first. Among what is stocked, BLOX Racing and BBK lean toward larger billet bores like 87mm, 90mm and 103mm aimed at built engines, while smaller bodies such as the 65mm EcoBoost unit suit forced-induction four- and six-cylinders. Bigger is not automatically better: a bore far larger than your intake and cylinder heads can support gives you little for the money and usually needs retuning to run right. Match the throttle body to the rest of your airflow and to your tuning plan. One product name references a CARB EO number - that is the manufacturer's own designation, and we make no legal or emissions claim about any part here.

What Else You Need

A throttle body is one link in the intake chain. Most buyers pair it with a cold air intake kit or a cold air intake to feed it, and keep a fresh replacement air filter in service. On boosted setups, look at intercoolers and matching intercooler pipes to complete the plumbing. Browse everything under Air Intakes to see the full section.

Fitment and Ordering

Not sure which listing matches your car? Call our fitment help line at 813-535-5801 or reach us through contact us before you order. All orders ship with free shipping, and Affirm and Katapult financing is available through our financing options.

Throttle Bodies: More Airflow Where the Engine Meets the Intake

A throttle body is the valve that sits between your intake tract and the manifold, controlling how much air the engine can pull as you open the pedal. A larger bore flows more air at wide-open throttle, which is why builders fit throttle bodies when they have already opened up the rest of the intake and want the top end to breathe without a bottleneck. On a factory setup the stock casting is often the choke point once you add other airflow parts, so this is a common step alongside a bigger intake and matched tuning.

What ThreePiece Stocks

There are 24 throttle bodies in stock here across three brands: BLOX Racing with 13, BBK with 7, and aFe with 4. Prices currently run from $69 to $708 - that is the live range for what is on the shelf, not a fixed quote. The catalog covers a spread of platforms, with fitment data listing makes like Ford, Toyota, Dodge and Honda, and named vehicles including the Ford Mustang, Toyota 4Runner, Dodge Viper, Honda Civic and Toyota FJ Cruiser, over a model-year span of 1996 to 2023. Product names also reference Chevrolet, Jeep and Chrysler applications.

Concrete examples give you a feel for the range: the aFe 85mm billet unit for the 18-21 Mustang GT 5.0L sits at the top end, the BLOX Racing 103mm billet piece for the Chevrolet LS3 is a large-bore option, and the BBK 90mm Power Plus for 5.7/6.1/6.4 Hemi covers a wide slice of Mopar V8s. For EcoBoost owners there is the aFe 65mm EcoBoost throttle body, and the BLOX Racing 87mm billet Mustang 5.0 unit shows the anodized billet direction.

How to Choose

Start with fitment, not bore size - the throttle body has to match your engine's mounting and electronics, so pick the one listed for your platform first. Among what is stocked, BLOX Racing and BBK lean toward larger billet bores like 87mm, 90mm and 103mm aimed at built engines, while smaller bodies such as the 65mm EcoBoost unit suit forced-induction four- and six-cylinders. Bigger is not automatically better: a bore far larger than your intake and cylinder heads can support gives you little for the money and usually needs retuning to run right. Match the throttle body to the rest of your airflow and to your tuning plan. One product name references a CARB EO number - that is the manufacturer's own designation, and we make no legal or emissions claim about any part here.

What Else You Need

A throttle body is one link in the intake chain. Most buyers pair it with a cold air intake kit or a cold air intake to feed it, and keep a fresh replacement air filter in service. On boosted setups, look at intercoolers and matching intercooler pipes to complete the plumbing. Browse everything under Air Intakes to see the full section.

Fitment and Ordering

Not sure which listing matches your car? Call our fitment help line at 813-535-5801 or reach us through contact us before you order. All orders ship with free shipping, and Affirm and Katapult financing is available through our financing options.