





Prevent overheating and premature engine wear. Includes O-ring
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$14.99
The thermostat regulates coolant flow based on engine temperature to maintain proper operating conditions.
Replacing a faulty thermostat will restore cooling efficiency and engine performance. During replacement, coolant loss is inevitable—be sure to use the correct fluid for your vehicle. It is also recommended to replace the thermostat housing, as the stock plastic versions are prone to warping or breaking during removal.
This unit includes the required sealing O-ring for proper installation.
JC PRONTEZZA supplies OEM-quality thermostats and housings to ensure reliable performance and fitment.
OE Part Number: 050 121 113 C
| Weight | .20 lbs |
|---|---|
| Dimensions | 3 × 3 × 2 in |
| Mfg Part # | 050121113C |
| Make | Model | Submodel | Engine | Notes |
|---|---|---|---|---|
| Audi | B5 A4 | FWD | 1.8T | Use vehicle selector to confirm fitment |
| Audi | B5 A4 | Quattro | 1.8T | Use vehicle selector to confirm fitment |
| Audi | TT MKI | FWD | 180HP | Use vehicle selector to confirm fitment |
| Audi | TT MKI | Quattro | 180HP | Use vehicle selector to confirm fitment |
| Audi | TT MKI | Quattro | 225HP | Use vehicle selector to confirm fitment |
| Volkswagen | 337/20AE | All | 1.8T | Use vehicle selector to confirm fitment |
| Volkswagen | Golf IV | All | 1.8T | Use vehicle selector to confirm fitment |
| Volkswagen | Golf IV | All | 2.0 | Use vehicle selector to confirm fitment |
| Volkswagen | Jetta IV | All | 1.8T | Use vehicle selector to confirm fitment |
| Volkswagen | Jetta IV | All | 2.0 | Use vehicle selector to confirm fitment |
| Volkswagen | Jetta IV GLI | All | 1.8T | Use vehicle selector to confirm fitment |
| Volkswagen | Jetta VI | Sedan | 2.0 | Use vehicle selector to confirm fitment |
| Volkswagen | Jetta VI | Sedan Facelift | 2.0L | Use vehicle selector to confirm fitment |
| Volkswagen | New Beetle | All | 1.8T | Use vehicle selector to confirm fitment |
| Volkswagen | New Beetle | All | 2.0 | Use vehicle selector to confirm fitment |
| Volkswagen | Passat B5 | 4 Motion | 1.8T | Use vehicle selector to confirm fitment |
| Volkswagen | Passat B5 | FWD | 1.8T | Use vehicle selector to confirm fitment |


Covers the thermostat, located on the coolant flange
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Replace your dented rusty oil pan – 021103601B


Ensure a proper seal when installing your new thermostat. 50×4


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Maximizes flow for stock turbochargers or future upgraded turbochargers thanks to a removable adapter