If you own any Audi A4 1.8T or VW Passat 1.8T, or a Golf, Jetta, or Beetle 1.8T built before 2002, you should upgrade your factory diverter valve to the latest version offered by Volkswagen. This valve, known as the '710N', has a 14.4 lb spring inside versus an 8.8 lb spring found in the earlier Golf/Jetta/Beetle models and all years of the Audi A4 1.8T and VW Passat 1.8T.

The 1.8T diverter valve is responsible for recirculating the pressurized intake air when the throttle plate is closed to prevent turbo compressor stall. The 710N diverter valve will help reduce any surging you may encounter after upgrading your car with a chip, intake, exhaust, or other horsepower parts.

Notes

Diverter Valve Location:

Audi A4 / VW Passat: The valve is located on a hose splitting off from the lower intercooler hose between the engine and radiator; access is from underneath the vehicle.
Audi TT / VW Golf, Jetta, Beetle: The valve is located on the rubber intake hose after the MAF (Mass Air Flow) sensor; access is from the top of the engine bay.

This is a factory-supplier diverter valve that is also available through your local VW dealer. To determine if your engine already is equipped with the 710N diverter valve, locate the valve and look for this Bosch part number: 0 280 142 114. If your diverter valve has this number stamped on it, you already have the 710N version.

Recommended over aftermarket billet Diverter Valves (Blowoff).

Fits:

Audi	A4 • S4 • RS4	B6 (2002-2004)	A4 1.8T FWD
Audi	A4 • S4 • RS4	B6 (2002-2004)	A4 1.8T quattro
Audi	A4 • S4 • RS4	B5 (1996-2001)	A4 1.8T FWD
Audi	A4 • S4 • RS4	B5 (1996-2001)	A4 1.8T quattro
Audi	TT • TTS • TTRS	8N (1998-2007)	TT 1.8T FWD
Audi	TT • TTS • TTRS	8N (1998-2007)	TT 1.8T quattro 180HP
Volkswagen	Beetle	Mk4 (1998-2010)	1.8T
Volkswagen	Golf • GTI • R • Rabbit	Mk4 (1999-2005)	Golf GTI 1.8T
Volkswagen	Jetta • GLI	Mk4 (1999-2005)	1.8T
Volkswagen	Passat	B5.2 (2001-2005)	1.8T
Volkswagen	Passat	B5 (1996-2000)	1.8T

B5 PASSAT 1.8T

EBC Redstuff Front Brake Pads DP31483C

EBC Yellowstuff Front Brake Pads DP41483R

B5.5 Replacement Headlight (individual)

NewSouth Performance Column Pod (B5 Passat) - CLEARANCE

NEUSPEED Stainless Steel Brake Lines • Passat B5/B5.2 FWD

NEUSPEED Stainless Steel Brake Lines • Passat B5 FWD

NEUSPEED Lowering Springs Kit | Sport • 1.8T Passat B5.2

NEUSPEED Diverter Valve • 1.8T Mk4, 8N TT