aFe 2022+ Toyota GR86 / 2022+ Subaru BRZ 76mm Throttle Body aFe AFE46-39104
aFe 2022+ Toyota GR86 / 2022+ Subaru BRZ 76mm Throttle Body aFe AFE46-39104
aFe 2022+ Toyota GR86 / 2022+ Subaru BRZ 76mm Throttle Body aFe AFE46-39104
aFe 2022+ Toyota GR86 / 2022+ Subaru BRZ 76mm Throttle Body aFe AFE46-39104
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aFe 2022+ Toyota GR86 / 2022+ Subaru BRZ 76mm Throttle Body

aFe
AFE46-39104
802959410110
Throttle Bodies
20+ Units In Stock - Ships Next Business Day
$ 359.00
$ 359.00

More Air, Better Throttle Response for the 2022-2025 Subaru BRZ

The aFe Silver Bullet high-flow throttle body 46-39104 bored to 76mm for maximum unrestricted airflow into the intake manifold, eliminating the factory throttle bore as a bottleneck for the 2022-2025 Subaru BRZ. This throttle body is precision-machined from aluminum to direct-replacement specifications and connects to the factory throttle position sensor and IAC with no wiring modification. The 46-39104 works synergistically with a cold air intake or exhaust upgrade for maximum return.

Key Features

  • Bore size: 76mm for unrestricted flow
  • Precision-machined aluminum construction
  • Direct bolt-on installation using factory hardware
  • Factory TPS sensor and idle air controller compatible
  • Compatible with cold air intake and exhaust upgrades for compounding gains
  • Backed by aFe Power limited manufacturer warranty

Fitment

Year Range Make Model Trim
2022-2025 Subaru BRZ Limited
2022-2025 Subaru BRZ Premium
2022-2025 Toyota GR86
2022-2025 Toyota GR86 Premium
2023 Toyota GR86 10th Anniversary Special Edition
2024 Toyota GR86 TRUENO Edition
2024-2025 Subaru BRZ TS
2025 Toyota GR86 Hakone Edition

Specifications

Detail Value
Part Number 46-39104
Brand aFe Power
Product Type High-Flow Throttle Body
Bore Size 76mm
Material Aluminum
Mounting Direct bolt-on, factory hardware
UPC 802959410110

What's Included

  • aFe Silver Bullet high-flow throttle body (46-39104)
  • Factory-compatible harness connectors and gasket

Frequently Asked Questions

Will this require a tune after installation?

A larger throttle body alone typically does not require a tune on naturally aspirated engines. On forced induction or highly modified engines, updating the throttle body airflow calibration with a tune will maximize gains.

How much power gain can I expect?

A larger bore throttle body removes a flow restriction that matters most at high RPM and under boost. Gains compounded with an intake and exhaust are more significant than any single component alone.

Does this affect idle quality?

In most cases, no. A direct-fit high-flow throttle body maintains the factory idle air control system. Allow the ECU time to relearn idle parameters after installation. If idle quality issues arise, check for vacuum leaks at all manifold and spacer joints before drawing other conclusions.

Is this reversible?

Yes. This throttle body reinstalls using the same mounting hardware as the factory unit. The original can be stored and reinstalled at any time.

Does this work with my cold air intake?

Yes. The 46-39104 is fully compatible with aftermarket cold air intakes and other intake system modifications. Running a complete intake system with this high-flow throttle body delivers compounding airflow improvements.

Will this void my factory warranty?

Under the Magnuson-Moss Warranty Act, a dealer cannot void your factory warranty solely because you installed an aftermarket high-flow throttle body. They must demonstrate a direct causal link to any specific failure. Remove the 46-39104 before any dealer service visit if you prefer not to discuss it.

What is the warranty on this product?

aFe Power provides a limited manufacturer warranty covering defects in materials and workmanship. Contact aFe Power or us for current warranty terms and coverage specifics.

Are any gaskets included?

A factory-compatible intake gasket is included with the throttle body. Always use a fresh gasket at installation to ensure a leak-free seal.

Installation Overview

  1. Disconnect the negative battery terminal and allow the engine to cool
  2. Remove the intake tube connected to the throttle body inlet
  3. Disconnect the TPS sensor connector and IAC connections from the factory throttle body
  4. Remove the four throttle body mounting bolts and set the factory unit aside
  5. Install the new throttle body with a fresh gasket and torque all bolts to factory specification
  6. Transfer the TPS sensor and IAC connectors to the new unit
  7. Reconnect all intake plumbing and vacuum lines
  8. Reconnect the battery and start the engine to confirm normal idle
  9. Allow the ECU to complete an idle relearn cycle before performing a WOT test

WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.

Request For Information

Have questions about aFe 2022+ Toyota GR86 / 2022+ Subaru BRZ 76mm Throttle Body? Fill out the form below and we'll get back to you by the next business day.
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