






🔥 Keep your BMW cool and in control — don’t let engine heat slow your drive!
This aftermarket Engine Coolant Reservoir Tank with sensor and cap is a precision-engineered replacement part compatible with select 2005-2016 BMW models including the 1 Series, 3 Series, X1, and Z4. Manufactured from durable materials, it ensures optimal coolant expansion and contraction, maintaining your engine’s ideal temperature. Designed for a perfect fit and easy installation, it includes a sensor for accurate coolant level monitoring, helping prevent overheating and engine damage.








| Fuel Type | Gasoline |
| Product Grade | Replacement Parts |
| Fit Type | Vehicle Specific |
| Manufacturer | PPNZQAUT |
| Model | Engine Coolant Reservoir with Sensor |
| Item Weight | 3.36 pounds |
| Package Dimensions | 12.4 x 11.89 x 7.17 inches |
| Item model number | 603-334 |
| Manufacturer Part Number | 603-334 |
| Position | Front |
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