IAG Big Bore 76mm Throttle Body w/ Electronics & Silver Adapter for OEM STI, Cosworth & AMS Intake Manifolds STI 04-21 | IAG-AFD-2027SL

Description

Product Fitment:

2004-2021 Subaru STI

Increase airflow and power without compromising drivability. The IAG Big Bore 76mm Throttle Body Upgrade Kit is a plug‑and‑play solution that replaces restrictive OEM units with a larger, OEM‑quality throttle body and precision adapter plate—ideal for Subaru builds targeting 600+ HP.

Features:

• 76 mm bore—nearly 25% larger than stock throttle body

• Supports big turbo setups and FMIC configurations

• Maintains smooth idle and throttle response

• Direct bolt-on kit: swap OEM throttle body for IAG adapter and 76 mm unit

• No springs, complex disassembly, or wiring modifications

• OEM connector remains plug‑and‑play (MAP sensor relocation may be required)

• CNC-machined from 6061 aluminum with O‑ring sealing

• Optional finishes: black anodized or natural silver

• Works seamlessly with STI, Cosworth, AMS intake manifolds

Included: 

• Includes 76 mm Big Bore Throttle Body, adapter plate, O‑rings, screws

• All necessary hardware for full installation in one box