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Rein CTN0045 Engine Coolant Thermostat
Reliable Engine Coolant Thermostat for BMW Models
The Rein CTN0045 engine coolant thermostat is designed to meet original equipment specifications, ensuring precise temperature regulation for your BMW 318i, 320i, 325i, 328i, 525i, M3, and Z3 models. This application-specific thermostat helps maintain optimal engine performance and efficiency.
Key Features of Rein CTN0045 Thermostat
- Matches original equipment design specifications for accurate fit and function
- Includes all necessary gaskets or seals required for installation
- Manufactured to strict engineering standards in Germany
- Thermostat set to 88 degrees Celsius to maintain optimal engine running temperature
- Compact dimensions: 3.0 inches length, 3.0 inches width, and 2.0 inches height
Detailed Product Description
The Rein CTN0045 thermostat insert is engineered as a direct replacement for BMW vehicles including the 318i, 318is, 320i, 325i, 325is, 328i, 328is, 525i, 525iT, M3, and Z3. Manufactured in Germany, this thermostat is designed to regulate coolant flow by opening at 88 degrees Celsius, which helps maintain the engine’s optimal operating temperature. The product includes all necessary gaskets or seals to ensure a proper seal during installation, reducing the risk of leaks. Its precise engineering and adherence to original equipment specifications make it a reliable choice for maintaining your BMW’s cooling system performance.
Common Applications and Issues Addressed
- Prevents engine overheating by regulating coolant flow
- Helps avoid poor engine performance caused by incorrect coolant temperature
- Reduces risk of coolant leaks with included gaskets and seals
- Maintains consistent engine temperature for fuel efficiency
- Replaces faulty or worn thermostats in BMW 3 Series and 5 Series models
Installation Notes and Tips
While the Rein CTN0045 thermostat includes all necessary gaskets and seals, installation hardware is not included. It is recommended to consult a professional mechanic or refer to the vehicle’s service manual for proper installation procedures. Ensure the engine is cool before removal and replacement to avoid injury. Proper installation will help maintain the integrity of the cooling system and prevent leaks.
Quality Assurance and Warranty
Manufactured to strict engineering standards in Germany, the Rein CTN0045 thermostat insert is built for durability and reliable performance. It meets original equipment specifications to ensure compatibility and function. Warranty details should be confirmed with the point of purchase or manufacturer documentation.
| Brand | Rein |
| Part Number | CTN0045 |
| Application Type | Applicationspecific |
| Bullet Point 1 | Matches original equipment design specifications |
| Bullet Point 2 | All gaskets or seals necessary for installation are supplied with |
| Bullet Point 3 | Manufactured to strict engineering standards/specifications in ma |
| Bullet Point 4 | Thermostat set to 88 degrees celsius to maintain optimal running |
| Container Type | Bx |
| Country of Origin | De |
| Installation Instructions Included | No |
| Is the Installation Hardware Included | No |
| Item Height | 2.0000 |
| Item Length | 3.0000 |
| Item Level GTIN | 888544069833 |
| Item Qty | 1 |
| Item Quantity Size | 1 |
| Item Quantity Size UOM | Ea |
| Item UOM | Ea |
| Item Weight | 0.2550 |
| Item Weight Unit UOM | Lb |
| Item Width | 3.0000 |
| Product Desc Extended 240 | Rein oe quality thermostat inserts are designed to be direct repl |
| 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 33 vehicles. Search below:
| Year | Make | Model | Body Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2000 | BMW | Z3 | 3.2L | L6 | N/A | ||
| 1999 | BMW | M3 | 3.2L | L6 | N/A | ||
| 1999 | BMW | Z3 | 3.2L | L6 | N/A | ||
| 1998 | BMW | M3 | 3.2L | L6 | N/A | ||
| 1998 | BMW | Z3 | 3.2L | L6 | N/A | ||
| 1997 | BMW | M3 | 3.2L | L6 | N/A | ||
| 1996 | BMW | 328i | 2.8L | L6 | N/A | 88c, To 12/95 | |
| 1996 | BMW | 328is | 2.8L | L6 | N/A | 88c, To 12/95 | |
| 1996 | BMW | M3 | 3.2L | L6 | N/A | ||
| 1995 | BMW | 320i | 2.0L | L6 | N/A | 88c | |
| 1995 | BMW | 325i | 2.5L | L6 | N/A | 88c | |
| 1995 | BMW | 325is | 2.5L | L6 | N/A | 88c | |
| 1995 | BMW | 525i | 2.5L | L6 | N/A | 88c | |
| 1995 | BMW | M3 | 3.0L | L6 | N/A | 88c | |
| 1994 | BMW | 320i | 2.0L | L6 | N/A | 88c | |
| 1994 | BMW | 325i | 2.5L | L6 | N/A | 88c | |
| 1994 | BMW | 325is | 2.5L | L6 | N/A | 88c | |
| 1994 | BMW | 525i | 2.5L | L6 | N/A | 88c | |
| 1994 | BMW | M3 | 3.0L | L6 | N/A | 88c | |
| 1993 | BMW | 320i | 2.0L | L6 | N/A | 88c | |
| 1993 | BMW | 325i | Sedan | 2.5L | L6 | N/A | 88c |
| 1993 | BMW | 325is | 2.5L | L6 | N/A | 88c | |
| 1993 | BMW | 525i | 2.5L | L6 | N/A | 88c | |
| 1993 | BMW | 525iT | 2.5L | L6 | N/A | 88c | |
| 1992 | BMW | 318i | Convertible | 1.8L | L4 | N/A | |
| 1992 | BMW | 318is | 1.8L | L4 | N/A | ||
| 1992 | BMW | 320i | 2.0L | L6 | N/A | 88c | |
| 1992 | BMW | 325i | Sedan | 2.5L | L6 | N/A | 88c |
| 1992 | BMW | 325is | 2.5L | L6 | N/A | 88c | |
| 1992 | BMW | 525i | 2.5L | L6 | N/A | 88c | |
| 1991 | BMW | 318i | 1.8L | L4 | N/A | ||
| 1991 | BMW | 318is | 1.8L | L4 | N/A | ||
| 1991 | BMW | 525i | 2.5L | L6 | N/A | 88c |
* 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.