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Rein CTI0003 Engine Coolant Thermostat
Reliable Engine Coolant Thermostat for Audi and Volkswagen Vehicles
The Rein CTI0003 engine coolant thermostat is designed to meet original equipment specifications, ensuring precise temperature regulation for your Audi or Volkswagen. This application-specific thermostat helps maintain optimal engine performance and prevents overheating.
Key Features of Rein CTI0003 Thermostat
- Matches original equipment design specifications for accurate fit and function
- Includes all necessary gaskets and seals for straightforward installation
- Manufactured under strict engineering standards for durability and reliability
- Thermostat set to open at 87 degrees Celsius to maintain optimal engine temperature
- Compact dimensions: 3.0 inches length, 3.0 inches width, and 2.0 inches height
- Lightweight design at 0.235 pounds for efficient engine operation
Detailed Product Description
The Rein CTI0003 engine coolant thermostat insert is engineered as a direct replacement for select Audi and Volkswagen models, including the Audi 80, 90, 4000, and Volkswagen Beetle, Cabrio, Corrado, Fox, Golf, Jetta, Passat, and Quantum. Manufactured in China, this thermostat is set to open at 87 degrees Celsius, which helps maintain the engine’s optimal running temperature, improving fuel efficiency and reducing emissions. The product comes complete with all necessary gaskets and seals, simplifying the installation process and ensuring a secure, leak-free fit.
Compatible Vehicles and Common Applications
- Audi 80, 90, 4000 models requiring precise temperature control
- Volkswagen Beetle, Cabrio, Corrado, Fox, Golf, Jetta, Passat, and Quantum models
- Replacement for thermostats that fail to regulate engine temperature properly
- Ideal for resolving engine overheating or poor heater performance
- Suitable for vehicles experiencing coolant leaks or thermostat housing issues
Installation Notes and Tips
When installing the Rein CTI0003 thermostat, ensure the engine is cool before beginning work. Use the supplied gaskets and seals to prevent leaks and verify the thermostat orientation matches the original equipment. Proper torque specifications should be followed to avoid damage to the housing. It is recommended to flush the cooling system during replacement to remove any debris that could affect thermostat operation.
Quality Assurance and Warranty Information
Rein thermostats are manufactured to meet strict engineering standards, ensuring consistent performance and durability. The CTI0003 thermostat is designed as an application-specific replacement part, providing reliable temperature regulation for your Audi or Volkswagen. While specific warranty details are not provided, Rein products typically adhere to industry quality controls to support long-term vehicle operation.
| Brand | Rein |
| Part Number | CTI0003 |
| Application Type | ApplicationSpecific |
| Container Type | BX |
| Country of Origin | CN |
| Item Height | 2.0000 |
| Item Length | 3.0000 |
| Item Level GTIN | 843266075883 |
| Item Qty | 1 |
| Item UOM | EA |
| Item Weight | 0.2350 |
| Item Weight Unit UOM | LB |
| Item Width | 3.0000 |
| Link to Manufacturer Page | www.reinautomotive.com |
| Product Desc Extended 240 | Rein OE quality thermostat inserts are designed to be direct replacements for OE thermostat inserts. Rein thermostat inserts are manufactured with high-quality plastic or metal construction to ensure durability and long service life. |
| Product Desc Invoice 40 | Rein Thermostat Insert |
| Product Desc Long 80 | Rein OE Quality Thermostat Insert |
| Product Desc Short 20 | Thermostat Insert |
This part fits 143 vehicles. Search below:
| Year | Make | Model | Body Type | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2006 | Volkswagen | Beetle | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2006 | Volkswagen | Golf | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2005 | Volkswagen | Beetle | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2005 | Volkswagen | Golf | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2005 | Volkswagen | Jetta | Sedan | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c |
| 2005 | Volkswagen | Jetta | Wagon | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c |
| 2005 | Volkswagen | Passat | 2.0L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2004 | Volkswagen | Beetle | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2004 | Volkswagen | Golf | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2004 | Volkswagen | Jetta | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2004 | Volkswagen | Passat | 2.0L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2003 | Volkswagen | Beetle | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2003 | Volkswagen | Golf | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2003 | Volkswagen | Jetta | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2002 | Volkswagen | Beetle | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2002 | Volkswagen | Cabrio | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 2002 | Volkswagen | Golf | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2002 | Volkswagen | Jetta | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2001 | Volkswagen | Beetle | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2001 | Volkswagen | Cabrio | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 2001 | Volkswagen | Golf | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2001 | Volkswagen | Jetta | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2000 | Volkswagen | Beetle | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2000 | Volkswagen | Cabrio | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 2000 | Volkswagen | Golf | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 2000 | Volkswagen | Jetta | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1999 | Volkswagen | Beetle | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1999 | Volkswagen | Cabrio | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1999 | Volkswagen | Golf | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1999 | Volkswagen | Jetta | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1999 | Volkswagen | Jetta | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1998 | Volkswagen | Beetle | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1998 | Volkswagen | Cabrio | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1998 | Volkswagen | Golf | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1998 | Volkswagen | Golf | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1998 | Volkswagen | Golf | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1998 | Volkswagen | Jetta | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1998 | Volkswagen | Jetta | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1997 | Volkswagen | Cabrio | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1997 | Volkswagen | Golf | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1997 | Volkswagen | Golf | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1997 | Volkswagen | Golf | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1997 | Volkswagen | Jetta | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1997 | Volkswagen | Jetta | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1997 | Volkswagen | Passat | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1996 | Volkswagen | Cabrio | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1996 | Volkswagen | Golf | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1996 | Volkswagen | Golf | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1996 | Volkswagen | Golf | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1996 | Volkswagen | Jetta | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1996 | Volkswagen | Jetta | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1996 | Volkswagen | Passat | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1996 | Volkswagen | Passat | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1995 | Volkswagen | Cabrio | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1995 | Volkswagen | Golf | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1995 | Volkswagen | Golf | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1995 | Volkswagen | Golf | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1995 | Volkswagen | Jetta | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1995 | Volkswagen | Jetta | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1995 | Volkswagen | Jetta | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1995 | Volkswagen | Passat | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1995 | Volkswagen | Passat | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1994 | Volkswagen | Golf | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1994 | Volkswagen | Golf | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1994 | Volkswagen | Golf | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1994 | Volkswagen | Jetta | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1994 | Volkswagen | Jetta | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1994 | Volkswagen | Jetta | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1994 | Volkswagen | Passat | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1994 | Volkswagen | Passat | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1993 | Volkswagen | Cabriolet | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1993 | Volkswagen | Fox | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1993 | Volkswagen | Golf | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1993 | Volkswagen | Golf | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1993 | Volkswagen | Golf | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1993 | Volkswagen | Jetta | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1993 | Volkswagen | Jetta | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1993 | Volkswagen | Jetta | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1993 | Volkswagen | Passat | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1993 | Volkswagen | Passat | 1.9L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1993 | Volkswagen | Passat | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1992 | Volkswagen | Cabriolet | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1992 | Volkswagen | Corrado | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1992 | Volkswagen | Fox | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1992 | Volkswagen | Golf | 1.6L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1992 | Volkswagen | Golf | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1992 | Volkswagen | Golf | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1992 | Volkswagen | Jetta | 1.6L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1992 | Volkswagen | Jetta | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1992 | Volkswagen | Jetta | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1992 | Volkswagen | Passat | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1992 | Volkswagen | Passat | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1991 | Volkswagen | Cabriolet | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1991 | Volkswagen | Corrado | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1991 | Volkswagen | Fox | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1991 | Volkswagen | Golf | 1.6L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1991 | Volkswagen | Golf | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1991 | Volkswagen | Golf | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1991 | Volkswagen | Jetta | 1.6L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1991 | Volkswagen | Jetta | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1991 | Volkswagen | Jetta | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1991 | Volkswagen | Passat | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1991 | Volkswagen | Passat | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1990 | Audi | 80 | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1990 | Volkswagen | Cabriolet | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1990 | Volkswagen | Corrado | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1990 | Volkswagen | Fox | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1990 | Volkswagen | Golf | 1.6L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1990 | Volkswagen | Golf | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1990 | Volkswagen | Golf | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1990 | Volkswagen | Jetta | 1.6L | L4 | DIESEL | N/A | Engine Coolant Thermostat 87c | |
| 1990 | Volkswagen | Jetta | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1990 | Volkswagen | Jetta | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1990 | Volkswagen | Passat | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1989 | Audi | 80 | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1989 | Volkswagen | Cabriolet | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1989 | Volkswagen | Fox | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1989 | Volkswagen | Golf | 1.6L | L4 | DIESEL | N/A | 87c, Mexico Built | |
| 1989 | Volkswagen | Golf | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1989 | Volkswagen | Jetta | 1.6L | L4 | DIESEL | N/A | 87c, Mexico Built | |
| 1989 | Volkswagen | Jetta | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1988 | Audi | 80 | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1988 | Audi | 90 | 2.0L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1988 | Volkswagen | Cabriolet | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1988 | Volkswagen | Fox | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1988 | Volkswagen | Golf | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1988 | Volkswagen | Jetta | 1.6L | L4 | DIESEL | N/A | 87c, Germany Built | |
| 1988 | Volkswagen | Jetta | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1987 | Audi | 4000 | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1987 | Volkswagen | Cabriolet | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1987 | Volkswagen | Fox | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1987 | Volkswagen | Golf | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1987 | Volkswagen | Jetta | 1.6L | L4 | DIESEL | N/A | 87c, Germany Built | |
| 1987 | Volkswagen | Jetta | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1986 | Audi | 4000 | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1986 | Volkswagen | Cabriolet | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1986 | Volkswagen | Golf | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1986 | Volkswagen | Jetta | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1985 | Audi | 4000 | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1985 | Volkswagen | Cabriolet | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1985 | Volkswagen | Golf | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1985 | Volkswagen | Jetta | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c | ||
| 1985 | Volkswagen | Quantum | 1.8L | L4 | N/A | Engine Coolant Thermostat 87c |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.