GFB Spares- Atmosphere Conversion Kit suits T9107 & T9125

GFB 5925 – Atmosphere Conversion Kit for T9107 & T9125

The GFB 5925 Atmosphere Conversion Kit allows T9107 and T9125 Mach 2 / Hybrid blow-off valves to vent to atmosphere on a wide range of vehicles.

This kit is specifically designed to replace the factory Bosch plastic valves and requires installation in the opposite orientation to ensure proper airflow: air must enter the valve at the bottom and vent through the sides.

🔧 Key Features & Benefits

• Converts factory BOV to atmospheric venting – Creates the signature GFB blow-off valve sound
• Compatible with T9107 & T9125 valves – Direct GFB application
• High-quality CNC machined components – Reliable, durable, and precise
• Viton O-ring seal – Oil-resistant and leak-proof
• Easy to install – Designed for enthusiasts with some minor adjustments
• Made in Australia – Under QMS ISO9001 standards

🚗 Vehicle Compatibility

Designed for turbocharged 1.8t and 4.0L engines, including:

VW / Audi 1.8t Models

• VW Passat B5 / B5.5 1.8t (1996–2005)
• VW Golf GTI Mk4 1.8t (1997–2005)
• VW Polo GTI Mk4F (Typ 9N3) 1.8t (2005–2009)
• VW New Beetle 1st Gen 1.8t (1999+)
• Audi B5 1.8t (1995–2001)
• Audi B6 1.8t (2001–2005)
• Audi S3 8L 1.8t (1999–2003)
• Audi TT 8N 1.8t (1998–2006)

⚠ Note: When installing a GFB valve, it must be installed in the opposite orientation to the factory Bosch plastic valve – air enters at the bottom and vents through the sides.

Ford Australia Turbo Models

• XR6 BA-BF 4.0L Turbo (2002–2008)
• XR6 FG 4.0L Turbo (2008+)
• Territory SY 4.0L Turbo (2006–2011)

Other Applications

• Mazda SP Turbo 2002 (150kW / 200hp)
• Subaru XT MY14+ (FA20 Engine)
• Subaru WRX MY14–20 (FA20 Engine)

⚙️ Installation Notes

• Not always direct bolt-on – Some models require minor hose modifications or valve relocation
• Ensure the valve orientation is correct: air must enter from the bottom and vent through the sides
• Ideal for enthusiasts wanting atmospheric venting with the GFB “signature whistle”