BBK vs aFe Throttle Body for 2017-2023 F-150 EcoBoost

A bigger throttle body is one of the cheapest ways to sharpen the pedal on a 2017–2023 Ford F-150 3.5L EcoBoost, and the two names truck owners keep landing on are BBK and aFe POWER. Both replace the restrictive factory unit with a free-flowing 73mm bore, both bolt to the OEM mounting points, and both are a popular pairing with a tune and cold-air intake. This BBK vs aFe throttle body comparison breaks down bore size, manufacturer-claimed power, emissions legality, and price so you can pick the right one for your EcoBoost or Raptor. At NLP Performance in Tampa, FL, these are two of the most-asked-about EcoBoost bolt-ons we ship.

BBK vs aFe Throttle Body: Which Wins for the 3.5L EcoBoost?

The BBK 73mm Black Series throttle body is the better overall upgrade for most 2017–2023 F-150 EcoBoost owners because it is CNC-machined from billet aluminum and carries a CARB Executive Order for 2017–2019 trucks, making it the choice if emissions compliance matters. The aFe POWER 73mm throttle body is the value winner: it delivers the same 73mm bore for roughly $115 less, but it is sold for off-road use only and cannot ship to California or other CARB-regulated states. Both use the factory wiring connector and gasket area, so install is a 30–45 minute job with hand tools.

The factory 3.5L EcoBoost throttle body measures roughly 68–70mm depending on the source; both of these upgrades open that up to a 73mm bore. On a turbocharged engine the real-world benefit is crisper throttle response and a little more airflow headroom once the turbos are spooled — not a dramatic naturally-aspirated-style horsepower jump. That is why we always tell our Tampa customers to treat a throttle body as one piece of a bolt-on stack (intake, charge pipes, tune), not a standalone power part.

Why Upgrade the Throttle Body on a 2017–2023 F-150 EcoBoost?

Upgrading the throttle body increases the diameter of the air passage into the intake manifold, which improves throttle response and raises the airflow ceiling for a modified 3.5L EcoBoost. The stock unit is sized for factory output; stepping from the roughly 68–70mm OEM bore to a 73mm bore reduces a restriction that becomes meaningful once you add a cold-air intake, bigger charge pipes, and a tune. On a stock truck the seat-of-the-pants gain is mostly sharper pedal feel; on a built truck it helps the turbos move the extra air they are now making.

Manufacturer-claimed numbers reflect that: BBK advertises roughly +8 to +15 horsepower from its 73mm unit, while aFe POWER lists gains of up to +16 horsepower and +24 lb-ft of torque. Neither figure is backed by an independent dyno sheet, and both brands note the gains grow as you add supporting mods. Treat those claims as best-case, fully-tuned numbers rather than a promise on a bone-stock Raptor.

What Real-World Gains Should You Expect on a 3.5L EcoBoost?

On a stock or lightly modified 3.5L EcoBoost, a 73mm throttle body delivers sharper throttle response and a bit more airflow headroom — not a double-digit horsepower jump by itself. From the factory, the standard 2017–2023 F-150 3.5L EcoBoost makes 375 horsepower and 470 lb-ft of torque, while the Raptor's high-output 3.5L is rated at 450 horsepower and 510 lb-ft. Those engines already move a lot of air, so the stock 68–70mm throttle body is not a hard bottleneck until you start raising boost with a tune.

That is the honest framing we give customers at our Tampa shop: the throttle body is a supporting mod. Add it alongside a high-flow cold-air intake, upgraded intercooler or charge pipes, and a custom tune, and the 73mm bore stops being the restriction that caps the stack. Run it alone on a bone-stock truck and you will mostly feel a crisper pedal and marginally faster spool — worthwhile, but set your expectations to match the manufacturer's “with supporting mods” caveat rather than the headline horsepower figure.

BBK 73mm Black Series Billet Throttle Body (Top Pick)

The BBK 73mm Black Series (part #1924) is our top pick because it blends billet-aluminum construction, a black anodized finish, and a CARB Executive Order covering 2017–2019 model-year trucks — the only one of these two that can be street-legal in California on those years. It fits 2017–2023 F-150 3.5L EcoBoost trucks, including the Raptor, plus EcoBoost Expedition and Explorer applications, and it reuses the factory electronic connector for a true bolt-on install at around $560.

aFe POWER 73mm Throttle Body (Budget Pick)

The aFe POWER 73mm throttle body is the budget pick, delivering the same 73mm bore as the BBK for roughly $115 less at around $446. It is a direct bolt-on for 2017–2026 F-150 3.5L EcoBoost and Raptor trucks (and the Lincoln Navigator), using the factory mounting points and connector. The trade-off: aFe sells it for off-road use only — it is not CARB-approved and cannot ship to California or other CARB-regulated states, so confirm your state's emissions rules before you buy.

Side-by-Side: BBK vs aFe Throttle Body Specs & Price

Both throttle bodies share the 73mm bore and a factory-connector bolt-on install, so the decision comes down to construction, emissions legality, fitment span, and price. Here is the head-to-head for a 2017–2023 F-150 3.5L EcoBoost.

Which Throttle Body Should You Buy?

Buy the BBK 73mm Black Series if you live in California or a CARB state, want billet construction, or plan to keep the truck emissions-compliant on a 2017–2019 model year — it is the only one of the two with an Executive Order. Buy the aFe POWER 73mm if you are outside CARB states and want the same bore for about $115 less; the savings go a long way toward the tune that actually unlocks the airflow. Both ship from NLP Performance with active instant-savings promotions at the time of writing, so check the live product pages for the current out-the-door price. For either, plan to run a supporting cold-air intake and a custom or canned tune — that is where a throttle body earns its keep on a 3.5L EcoBoost, and it is why most of the F-150 EcoBoost builds that leave our Tampa shop pair the throttle body with an intake and a handheld tuner in the same order.

How to Install an EcoBoost Throttle Body

Installing a 73mm throttle body on a 3.5L EcoBoost takes about 30–45 minutes with hand tools and requires no tune to run, though a tune is recommended to realize airflow gains. Disconnect the battery, remove the intake tube and air box lid from the throttle body, unplug the electronic connector, and remove the four factory bolts. Transfer the gasket or O-ring as directed, bolt the new 73mm unit to the factory mounting points, reconnect the connector, and reinstall the intake. Clear any codes, let the truck relearn idle, and you are done. Because both units reuse the OEM connector and bolt pattern, no wiring or adapter is needed.