OE Quality
60-Day Returns

Rein EPK0028 Engine Coolant Reservoir Kit
Reliable Engine Coolant Reservoir Kit for BMW Models
The Rein EPK0028 engine coolant reservoir kit is designed specifically for select BMW vehicles, including the 1 Series M, 128i, 135i, 323i, 325i, 328i, 330i, 335i, X1, and Z4 models. This application-specific expansion tank kit ensures proper coolant containment and system performance under demanding conditions.
- Includes sensor (if applicable) and cap for complete installation
- Manufactured from virgin plastic that meets or exceeds original equipment specifications
- Resistant to cracking and wear caused by repeated heat cycles
- Direct fitment allows for straightforward replacement without modifications
Durable Construction and OE Quality Standards
Produced from high-grade virgin plastic, the Rein EPK0028 expansion tank kit is engineered to withstand the thermal stresses typical in BMW cooling systems. Its resistance to cracking and wear helps maintain coolant integrity and prevents leaks over time. The kit includes all necessary components such as the sensor and cap, ensuring a seamless replacement process. Designed as a direct fit for BMW 1 Series M, 128i, 135i, 323i, 325i, 328i, 330i, 335i, X1, and Z4 models, this reservoir kit supports reliable engine cooling and system longevity.
Common Applications and Problem Resolution
- Replacement of cracked or leaking coolant reservoirs
- Restoring proper coolant level monitoring with included sensor
- Addressing coolant overflow or pressure issues due to worn tanks
- Preventing engine overheating caused by compromised reservoir integrity
- Upgrading to OE quality components for improved durability
Installation Notes and Tips
The Rein EPK0028 engine coolant reservoir kit is designed for direct fitment on compatible BMW models, allowing for an efficient installation process. It is recommended to drain the coolant system before removal and inspect hoses and clamps for wear. Ensure the sensor is properly connected and the cap is securely tightened to maintain system pressure. Following manufacturer torque specifications and safety precautions will help ensure optimal performance.
Quality Assurance and Warranty Coverage
Rein expansion tank kits are produced to meet or exceed OE standards, providing reliable performance and durability. This product includes a 24-month or 24,000-mile warranty, offering coverage against defects in materials and workmanship. The Rein EPK0028 kit is manufactured in China under strict quality controls to ensure consistent product integrity for BMW cooling system applications.
| Brand | Rein |
| Part Number | EPK0028 |
| Application Type | ApplicationSpecific |
| Container Type | BX |
| Country of Origin | CN |
| Item Height | 7.2800 |
| Item Length | 11.4100 |
| Item Level GTIN | 888544107917 |
| Item Qty | 1 |
| Item UOM | EA |
| Item Weight | 3.1230 |
| Item Weight Unit UOM | LB |
| Item Width | 10.8200 |
| Link to Manufacturer Page | www.reinautomotive.com |
| Product Desc Extended 240 | Rein OE quality expansion tank kits are designed to handle heat cycles and resist cracking. These tanks are produced from virgin plastic with no regrind to ensure the plastic is durable and will have a long service life. |
| Product Desc Invoice 40 | Rein Expansion Tank Kit |
| Product Desc Long 80 | Rein OE Quality Expansion Tank Kit |
| Product Desc Short 20 | Expansion Tank Kit |
| Warranty Distance | 24000 |
| Warranty Time | 24 |
This part fits 62 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2016 | BMW | Z4 | 2.0L | L4 | N/A | |
| 2016 | BMW | Z4 | 3.0L | L6 | N/A | |
| 2015 | BMW | X1 | 2.0L | L4 | N/A | |
| 2015 | BMW | Z4 | 2.0L | L4 | N/A | |
| 2015 | BMW | Z4 | 3.0L | L6 | N/A | |
| 2014 | BMW | X1 | 2.0L | L4 | N/A | |
| 2014 | BMW | Z4 | 2.0L | L4 | N/A | |
| 2014 | BMW | Z4 | 3.0L | L6 | N/A | |
| 2013 | BMW | 128i | 3.0L | L6 | N/A | |
| 2013 | BMW | 328i | 3.0L | L6 | N/A | |
| 2013 | BMW | 328i xDrive | 3.0L | L6 | N/A | |
| 2013 | BMW | 335is | 3.0L | L6 | N/A | |
| 2013 | BMW | X1 | 2.0L | L4 | N/A | |
| 2013 | BMW | Z4 | 2.0L | L4 | N/A | |
| 2013 | BMW | Z4 | 3.0L | L6 | N/A | |
| 2012 | BMW | 128i | 3.0L | L6 | N/A | |
| 2012 | BMW | 328i | 3.0L | L6 | N/A | |
| 2012 | BMW | 328i xDrive | 3.0L | L6 | N/A | |
| 2012 | BMW | 335is | 3.0L | L6 | N/A | |
| 2012 | BMW | X1 | 2.0L | L4 | N/A | |
| 2012 | BMW | Z4 | 2.0L | L4 | N/A | |
| 2012 | BMW | Z4 | 3.0L | L6 | N/A | |
| 2011 | BMW | 1 Series M | 3.0L | L6 | N/A | |
| 2011 | BMW | 128i | 3.0L | L6 | N/A | |
| 2011 | BMW | 323i | 2.5L | L6 | N/A | |
| 2011 | BMW | 328i | 3.0L | L6 | N/A | |
| 2011 | BMW | 328i xDrive | 3.0L | L6 | N/A | |
| 2011 | BMW | 335is | 3.0L | L6 | N/A | |
| 2011 | BMW | Z4 | 3.0L | L6 | N/A | |
| 2010 | BMW | 128i | 3.0L | L6 | N/A | |
| 2010 | BMW | 135i | 3.0L | L6 | N/A | |
| 2010 | BMW | 323i | 2.5L | L6 | N/A | |
| 2010 | BMW | 328i | 3.0L | L6 | N/A | |
| 2010 | BMW | 328i xDrive | 3.0L | L6 | N/A | |
| 2010 | BMW | 335i | 3.0L | L6 | N/A | |
| 2010 | BMW | 335i xDrive | 3.0L | L6 | N/A | |
| 2010 | BMW | Z4 | 3.0L | L6 | N/A | |
| 2009 | BMW | 128i | 3.0L | L6 | N/A | |
| 2009 | BMW | 135i | 3.0L | L6 | N/A | |
| 2009 | BMW | 323i | 2.5L | L6 | N/A | |
| 2009 | BMW | 328i | 3.0L | L6 | N/A | |
| 2009 | BMW | 328i xDrive | 3.0L | L6 | N/A | |
| 2009 | BMW | 335i | 3.0L | L6 | N/A | |
| 2009 | BMW | 335i xDrive | 3.0L | L6 | N/A | |
| 2009 | BMW | Z4 | 3.0L | L6 | N/A | |
| 2008 | BMW | 128i | 3.0L | L6 | N/A | |
| 2008 | BMW | 135i | 3.0L | L6 | N/A | |
| 2008 | BMW | 323i | 2.5L | L6 | N/A | |
| 2008 | BMW | 328i | 3.0L | L6 | N/A | |
| 2008 | BMW | 328xi | 3.0L | L6 | N/A | |
| 2008 | BMW | 335i | 3.0L | L6 | N/A | |
| 2008 | BMW | 335xi | 3.0L | L6 | N/A | |
| 2007 | BMW | 323i | 2.5L | L6 | N/A | |
| 2007 | BMW | 328i | 3.0L | L6 | N/A | |
| 2007 | BMW | 328xi | 3.0L | L6 | N/A | |
| 2007 | BMW | 335i | 3.0L | L6 | N/A | |
| 2007 | BMW | 335xi | 3.0L | L6 | N/A | |
| 2006 | BMW | 323i | 2.5L | L6 | N/A | |
| 2006 | BMW | 325i | 3.0L | L6 | N/A | |
| 2006 | BMW | 325xi | 3.0L | L6 | N/A | |
| 2006 | BMW | 330i | 3.0L | L6 | N/A | |
| 2006 | BMW | 330xi | 3.0L | L6 | N/A |
* 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.