Description
Engine coolant thermostat designed to regulate coolant flow and maintain optimal operating temperature. Ensures efficient warm-up, prevents overheating, and supports reliable performance with a precise fit. The Mishimoto racing thermostat for the 99-05 Volkwagen GTI 1.8T will promote greater cooling efficiency in your stock or modified GTI. Once the engine is fully warmed up, Mishimoto’s Volkswagen GTI racing thermostat will open at a lower temperature than standard thermostats. This allows coolant to flow through the engine sooner, which reduces and maintains cooler engine temperatures. The Mishimoto 99-05 Volkwagen GTI 1.8T racing thermostat is the perfect addition to your street or track GTI and is a direct replacement for the stock thermostat. This thermostat includes the signature Mishimoto Lifetime Warranty.
- Lower activation temperature allows coolant to flow through the engine earlier, maintaining lower temperatures (Mishimoto thermostat activates at 180F vs. stock 188.6F)
- Mishimoto Lifetime Warranty
Application Summary:
| Year | Make/Model |
|---|---|
| 1997-2002 | Audi A4 |
| 1997-2002 | Audi A4 Quattro |
| 2000-2006 | Audi TT |
| 2000-2002 | Audi TT Quattro |
| 1998-2005 | Volkswagen Beetle |
| 1999-2006 | Volkswagen Golf |
| 1999-2005 | Volkswagen Jetta |
| 2011-2015 | Volkswagen Jetta |
| 1998-2005 | Volkswagen Passat |





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