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GFB T9416-2 is a twin VTA blow-off-valve kit for Alfa Romeo Giulia and Stelvio Quadrifoglio applications with the 2.9-liter twin-turbo engine. The low-profile electronic-valve design includes removable extended trumpets and adjustable spring preload to change response and sound. Confirm engine, factory valve layout, emissions requirements, and exact part number before ordering.
Key Features
- Twin-valve VTA package
- Low-profile integrated solenoid layout
- Removable extended trumpets
- Adjustable spring preload
- CNC-machined valve components
- GFB lifetime warranty
Fitment
GFB lists Alfa Romeo Giulia Quadrifoglio from 2016 onward and Stelvio Quadrifoglio from 2017 onward. The tags use the current 2026 catalog year as the range end and keep Quadrifoglio plus the 2.9-liter engine as application qualifiers rather than model names.
Specifications
| Brand | Go Fast Bits |
|---|---|
| Manufacturer Part Number | T9416-2 |
| Valve Type | Vent-to-atmosphere twin kit |
| Engine Application | 2.9-liter twin turbo |
| Adjustment | Spring preload and removable trumpets |
| Warranty | Lifetime limited warranty |
| UPC or GTIN | 9328022000275 |
What's Included
Two GFB VTA valve assemblies with removable trumpets and the application components supplied for part T9416-2.
About Go Fast Bits
Go Fast Bits manufactures automotive performance and replacement components. Match the exact manufacturer part number and published application details before installation.
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Frequently Asked Questions
Is T9416-2 a single valve?
No. It is the twin-valve kit required by the supported Quadrifoglio application.
Can the sound be changed?
Yes. The removable trumpets and spring-preload adjustment change the valve's sound and operating response.
Is this kit CARB exempt?
No CARB exemption is represented for this exact kit. Confirm local emissions rules before use.
Installation Instructions
Installation should be completed by a qualified technician using the current manufacturer instructions. Verify the vehicle or system application, inspect every supplied component, follow the specified fastener and torque procedures, check clearances and routing, and confirm safe operation before driving.
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