Turbosmart Kompact Plumb Back Diverter Valve for Audi A4 1.8T and S3 1.8T (Part Number: TS-0203-1222)

Full recirculating BOV. The Plumb Back system recirculates all excess pressure back into the intake system. Great for enthusiasts who do not want to be noticed but want the performance and reliability benefits of a quality BOV. Full recirculating BOV. The Plumb Back system recirculates all excess pressure back into the intake system. Great for enthusiasts not wanting to be noticed but wanting the performance and reliability benefits of a quality BOV. Note: that this will require two valves for twin-turbo applications, such as the Audi S4 2.7L (B5) 97-01. Audi A3 1.8T 20v 1996-2003; Audi A4 1.8T 20v 1997-2006; Audi A6 1.8T 20v 1997-2004; Audi S3 1.8T 20v 1999-2003; Audi TT 1.8T 20v 1998-2006; Bentley GT Continental 2003-current; Fiat Coupe 16 20V 1993-2000; Fiat Punto GT 1993-1999; Fiat Uno Mk1 1985-1989; Fiat Uno Mk2 1989-1995; Ford XR6 BA Turbo 2002-2005; Ford XR6 BF Turbo 2005-2008; Ford XR6 FG Turbo 2008-2014; Ford Sierra Cosworth 2WD & 4WD 1986-1992; Lancia Delta HF 1.6L 1979-1994; Lancia Delta Integrale 2.0L 8 16V 1989-1994; Mazda MX5 SP & SE 2004-2005; Peugeot 406 Sri 1997-1999; Peugeot 605 Sri 1991-1999; Porsche 911 (964) 1990-1994; Porsche 911 Turbo (993) 1995-1998; Porsche 911 Turbo (996) 1999-2005; Porsche 944 1985-1991; Porsche Cayenne Turbo 2006-current (requires two valves); Saab 900 Turbo 1979-1993; Saab 9000 1990-1998; Saab 93 1999-current; Saab 95 1997-2012; Volvo 440 1987-1997; Volvo 480 1988-1995; Volvo 740 1984-1992; VW Golf Mk4 1.8 20v 1998-2006; VW Jetta 1.8 20v 1999-2006; VW Passat 1.8 20v 1999-2005; VW Polo GTI 1.8 20v 2005-2009; VW New Beetle 1.8 20v 1998-2011

The Turbosmart TS-0203-1222 is a full recirculating blow-off valve designed specifically for the Audi A4 1.8T and S3 1.8T models from 1999 to 2006. Featuring a plumb back system, this valve efficiently recirculates all excess pressure back into the intake system, ensuring a smooth and quiet operation ideal for enthusiasts who prefer stealthy performance upgrades without the loud compressor surge sound. Crafted with high-quality materials, this BOV delivers reliable operation and consistent boost control, making it a perfect choice for daily drivers and performance enthusiasts alike.
The Kompact design offers a compact footprint that fits seamlessly into your vehicle's existing setup. Its 25mm internal diameter allows for optimal airflow and responsiveness, providing immediate boost response and maintaining engine reliability. Please note that for twin-turbo applications, such as the Audi S4 2.7L (B5) from 1997-2001, two valves are required to properly manage boost pressures across both turbochargers. The valve is not CARB approved, and installation requires acknowledgment of this status. This product is suitable for a broad range of vehicles, including various models from Fiat, Ford, Lancia, Mazda, Peugeot, Porsche, Saab, Volvo, and VW, making it a versatile upgrade for many turbocharged engines.
Designed for ease of installation and long-term durability, the Turbosmart Kompact Plumb Back Diverter Valve ensures your turbo system maintains optimal performance and reliability. Whether upgrading your vehicle for improved response or replacing a worn-out valve, this part provides a high-performance solution that blends discreet operation with excellent boost control. Trust Turbosmart for quality and precision engineered automotive parts that meet the demands of modern turbocharged engines.

Features:

• Full recirculating plumb back system: recirculates all excess pressure back into the intake system for quiet operation

• Compact design: measures approximately 5 inches long, ideal for tight engine bays

• 25mm internal diameter: ensures optimal airflow and boost response

• High-quality construction: durable materials for long-lasting performance

• Suitable for various turbocharged vehicles: including specific models from Audi, Fiat, Ford, Lancia, Mazda, Peugeot, Porsche, Saab, Volvo, and VW

• Requires two valves for twin-turbo applications such as the Audi S4 2.7L (B5)

• Not CARB approved: installation acknowledgment required

• Easy to install: designed for direct replacement and compatibility with stock or upgraded systems

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1