The stock plastic housing cracks with age, heat cycling and the plastic material becomes brittle

This upgraded aluminum one solves that.

Includes:

Housing

New O Ring

Thermostat (stock temp) OEM 

Fits:

Volkswagen

• Golf TDI MkIV (A4 chassis) w/ ALH Engine (1999-2003)
• Jetta TDI MkIV (A4 chassis) w/ ALH Engine (1999-2003)
• Jetta Wagon TDI (A4 chassis) w/ ALH Engine (2002-2003)
• New Beetle TDI (A4 chassis) w/ ALH Engine (1998-2003)