BMW 3 Series F30 Radiator Coolant Cap | FEBI 36737
BMW F30 Radiator Cap FEBI (Coolant Reservoir Pressure Valve)
FEBI 36737 | Original German Quality | Optimal Pressure and Temperature Solution
- Hot Engine Hazard: Attempting to open an old or new BMW F30 Radiator Cap while the engine is hot is STRICTLY prohibited! Boiling water and steam in the system can spray directly onto your face, causing severe burns. Only open the cap when the engine is completely cool (in the morning or at least 3 hours after shutdown).
- Hose Burst Risk: This cap is not just a plug; it is also a precision pressure valve. A faulty BMW F30 Radiator Cap with a stuck spring mechanism that cannot release excess pressure can burst radiator hoses or split the expansion tank.
Imported specifically for BMW's legendary 3 Series F30 models, the FEBI brand BMW F30 Radiator Cap is now available! This mechanical valve creates a specific bar pressure in the system to raise the boiling point of the antifreeze coolant. Over time, the extreme hot-cold cycles can stretch the steel spring inside or melt the rubber O-ring seals. An old BMW F30 Radiator Cap that fails to maintain pressure and releases water as steam can cause the water to boil at much lower temperatures, leading to coolant loss and ultimately causing the engine to overheat and blow a gasket. To save your vehicle from these massive repair costs and roadside stress, you can reset the pressure in your cooling system with this brand new BMW F30 Radiator Cap manufactured with FEBI Bilstein quality, the original supplier of German automotive giants. This imported BMW F30 Radiator Cap comes with heat-resistant, pressure-resistant O-ring seals, completely sealing your expansion tank from the outside and keeping your engine's temperature gauge in the safe zone.
- Prevents Boiling (Overheating): A brand new BMW F30 Radiator Cap keeps the water in the system at the ideal bar pressure, allowing the liquid to remain in liquid form up to 120-130 degrees without boiling.
- Stops Coolant Loss: Thanks to its flawless O-ring (rubber seal) structure, it completely prevents the water in the expansion tank from evaporating and escaping into the atmosphere.
- FEBI (German) Quality: Manufactured to original factory standards (OEM). Unlike aftermarket caps, it opens the valve when the specified bar value is exceeded, protecting the system from bursting.
- Easy Installation: You can easily replace the old cap by turning it off by hand when the engine is completely cool, without going to any mechanic.
Technical Details
| Brand | FEBI Bilstein (German Production - Original OEM Cooling Component) |
| Product Code | 36737 |
| Product Type | BMW F30 Radiator Cap (Expansion Tank / Coolant Reservoir Cap) |
| Compatibility | BMW 3 Series F30 (Standard for All Gasoline and Diesel Engine Options) |
Frequently Asked Questions (FAQ)
This product is equivalent to the following OEM/original part numbers. You can search by your vehicle's original part number.
- 17117521071 — BMW
Compatible vehicle information not yet added.



