aFe Power has released the 85mm Billet Throttle Body for the 2018—2021 Ford Mustang GT! Test results on aFe’s Dynojet dyno showed power gains across the powerband, topping out at +17 HP and +15 ft-lbs of torque at 6,000 rpm. Testing was conducted on a 2020 Mustang 5.0 comparing stock and the aFe Power BTB (all tests conducted using 91-octane fuel). No other modifications to the vehicle were made, so imagine the potential when you add in other performance-enhancing products such as a cold air intake, tuner, and cat-back exhaust! Not only did aFe Power increase the bore diameter from the stock 80 mm to 85 mm, but the company also redesigned the throttle body from the ground up, aerodynamically improving the airflow path. Why 85 mm and not larger? 3 reasons: 1) At 85 mm, no custom tuning is required so this works right out of the box; 2) The 85 mm diameter provides a direct path into the 84 mm intake manifold opening, a larger diameter would require modification to the stock manifold or use of an aftermarket one; and 3) The mounting diameter for your intake tube is only slightly increased, but it allows you to retain the stock intake tube or you can upgrade to a cold air intake without having any special adapters.


  • 85mm Bore Diameter, No tuning required
  • Aerodynamically designed flow path, Dyno proven HP and TQ gains
  • +17 Horsepower, +15 ft-lbs of torque
  • Retains OEM electronics and gearing mechanism, No rough idling, No CEL
  • Billet Aluminum, precision machined, black anodized finish, Perfect fitment, subtle, custom look
  • Furnished complete, all hardware included, Simple installation, less than 1 hour

Application: 2018–2021 Ford Mustang GT V8 5.0L, 2018–2020 Ford F-150 V8 5.0L, 2020–2021 Ford F-250/350 Super Duty V8 6.2L/V8 7.3L

Part Number: 46-39101


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