Turbosmart 97-06 Audi A4 1.8T 20V / 99-03 Audi S3 1.8T 20V Kompact Plumb Back Diverter Valve (25mm)

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 Kompact Plumb Back Diverter Valve (Part Number: turTS-0203-1222) is designed to provide a seamless, fully recirculating blow-off valve (BOV) solution for a wide range of turbocharged vehicles. This high-quality valve features a plumb back system that efficiently recirculates all excess pressure back into the intake system, ensuring smooth performance and reducing noise for a discreet driving experience. Ideal for enthusiasts seeking reliable operation without attention, this BOV enhances turbo response and maintains engine integrity under boost conditions. Constructed with durable materials, it offers long-lasting performance suitable for daily drivers and tuning enthusiasts alike. The valve's compact design ensures easy installation in applications like the Audi A3, A4, A6, S3, TT, and many other compatible models listed in the specifications. Note that twin-turbo applications, such as the Audi S4 2.7L (B5), require two valves for optimal functionality. This product complies with Prop 65 regulations and requires carb acknowledgment, making it suitable for many aftermarket upgrades. Whether you're upgrading your vehicle's turbo system or replacing a worn-out valve, the Turbosmart Kompact Plumb Back Diverter Valve provides a high-performance, discreet solution for maintaining boost control and engine reliability. The valve is suitable for a variety of vehicles from different manufacturers, including Audi, Bentley, Fiat, Ford, Lancia, Mazda, Peugeot, Porsche, Saab, Volvo, and Volkswagen, among others, ensuring broad compatibility for turbocharged engines from the late 1980s through the 2000s. Designed for ease of installation and reliable operation, this BOV is an excellent choice for performance-oriented drivers looking to optimize their turbocharged engine's response while keeping noise levels low and emissions compliant.

Features:

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

• Compact design: fits easily into various turbocharged vehicle applications

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

• Universal compatibility: suitable for numerous models including Audi, Porsche, Fiat, Mazda, and more

• Twin-turbo application support: requires two valves for twin-turbo setups such as the Audi S4 2.7L (B5)