Audi VW Engine Coolant Thermostat CTI0003 – Rein
We show live inventory for in-stock items. Products may sell out due to high demand but are restocked regularly. Out-of-stock items can still be ordered and usually arrive within a few weeks.
We show live inventory for in-stock items. Products may sell out due to high demand but are restocked regularly. Out-of-stock items can still be ordered and usually arrive within a few weeks.
The Rein Engine Coolant Thermostat (CTI0003) is a high-quality replacement part for Audi and Volkswagen engines, maintaining optimal operating temperature for efficiency and engine protection. It fits the same wide range of models as CTI0004, including VW Golf, Jetta, Passat, and more from 1985 to 2006. This thermostat is built to OEM specs for reliable, durable performance.
| Make | Model | Years | Engine |
|---|---|---|---|
| Volkswagen | Golf | 1999–2006 | 1.9L4 |
| Volkswagen | Beetle | 1998–2006 | 1.9L4 |
| Volkswagen | Passat | 1990–1993 | 2.0L4 |
| Volkswagen | Passat | 1995–1996 | 2.0L4 |
| Volkswagen | Passat | 2004–2005 | 2.0L4 |
| Volkswagen | Jetta | 1997–2005 | 1.9L4 |
| Volkswagen | Cabrio | 1995–2002 | 2.0L4 |
| Volkswagen | Jetta | 1990–1999 | 2.0L4 |
| Volkswagen | Golf | 1990–1998 | 2.0L4 |
| Volkswagen | Passat | 1996–1997 | 1.9L4 |
| Volkswagen | Fox | 1987–1993 | 1.8L4 |
| Volkswagen | Cabriolet | 1985–1993 | 1.8L4 |
| Volkswagen | Jetta | 1985–1992 | 1.8L4 |
| Volkswagen | Jetta | 1987 | 1.6L4 |
| Volkswagen | Jetta | 1989–1992 | 1.6L4 |
| Volkswagen | Golf | 1985–1992 | 1.8L4 |
| Volkswagen | Corrado | 1990–1992 | 1.8L4 |
| Volkswagen | Scirocco | 1985–1988 | 1.8L4 |
| Audi | 4000 | 1985–1987 | 1.8L4 |
| Volkswagen | Quantum | 1985 | 1.8L4 |
| Part Number | CTI0003 |
| Product Type | Engine Coolant Thermostat |
| Brand | Rein Automotive |
Drain coolant, remove thermostat housing, replace with new thermostat and gasket, then refill coolant. Professional installation recommended.
Rein Automotive is a well-known supplier of cooling system parts, trusted for quality and OE-equivalent performance.
This part also goes by the following cross reference.
Cross Reference Part Number:
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