Product Fitment:
2004-2021 Subaru STI
Eliminate airflow bottlenecks and unleash the full potential of your high-horsepower Subaru build with the IAG 82mm Bosch Throttle Body Upgrade Kit—engineered for 600+ HP applications.
Includes genuine Bosch 82mm throttle body – 36% larger bore than stock
Enables higher airflow volume needed for big turbo and front-mount intercooler setups
IAG adapter plate allows clean integration without cutting or major fabrication
Includes plug-and-play wire harness for easier installation with standalone ECUs
Adapter plate CNC-machined from 6061 billet aluminum
Available in anodized black or raw silver for a sleek, corrosion-resistant finish
O-ring sealed for leak-free fitment to intake manifold
Ideal for use with Process West or Corsa Veloce intake manifolds
Requires stand-alone engine management system
Custom tuning is mandatory for proper throttle scaling and idle control
Not compatible with OEM-style MAP sensors
Additional custom piping/fabrication may be required depending on intake layout
(1) Bosch 82mm Throttle Body (Silver Finish)
(1) IAG Aluminum Adapter Plate (Black Finish)
(4) M6x45mm Socket Head Cap Screws
(4) M6x20mm Socket Head Cap Screws
(4) M6 Flat Washers
(4) Small O-Rings
(2) Large Adapter Plate O-Rings
(1) Wire Harness Adapter for Bosch Throttle Body
Subaru builds targeting 600+ horsepower
Front-mount intercooler setups
Custom intake manifolds and big turbo conversions
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