Febi 46222 Radiator Cap

Overview of Febi Radiator Cap 46222 for BMW Vehicles

The Febi radiator cap 46222 is designed to maintain optimal pressure in the cooling system of select BMW models. Engineered with durable plastic and precise dimensions, this radiator cap ensures reliable sealing and pressure regulation for efficient engine cooling.

• Material: High-quality plastic construction
• Filler neck height: 46.0 mm
• Filler neck outside diameters: 30.0 mm and 88.0 mm
• Outside thread size: M52 x 3
• Pressure rating: 2.0 bar
• Color: Black
• Article version: New implementation

Technical Details and Specifications

The Febi radiator cap 46222 features a 2.0 bar pressure rating, which is critical for maintaining the correct pressure within the cooling system of BMW models such as the 525i, 535i GT, M3, and X5. The cap’s plastic material offers resistance to heat and corrosion, while the precise filler neck height of 46.0 mm and outside diameters of 30.0 mm and 88.0 mm ensure a secure fit. The M52 x 3 outside thread size allows for proper installation on compatible filler necks. This radiator cap is a new implementation version, reflecting updated design standards for durability and performance.

Compatible BMW Models and Applications

This radiator cap 46222 is compatible with a wide range of BMW vehicles, including but not limited to:

• BMW 525i, 528i, 528i xDrive
• BMW 530i, 535i, 535i GT, 535i xDrive
• BMW 545i, 550i, 550i GT, 550i xDrive
• BMW 640i, 645Ci, 650i, 650i xDrive
• BMW 740i, 740Li, 750i xDrive, 750Li, 750Li xDrive
• BMW 760Li, ActiveHybrid 5, M3, M4, M5, M6, M760Li xDrive, M850i xDrive
• BMW X5, X6

Common Cooling System Issues Addressed

• Prevents coolant leaks caused by worn or damaged radiator caps
• Maintains proper system pressure to avoid overheating
• Ensures efficient coolant flow and prevents air entry
• Reduces risk of radiator or hose damage due to pressure fluctuations
• Helps maintain engine temperature stability during operation

Installation Notes and Tips

When installing the Febi radiator cap 46222, ensure the cooling system is cool to avoid injury from hot coolant or steam. Verify that the filler neck dimensions match the cap specifications (M52 x 3 thread, 46.0 mm height). Tighten the cap securely but avoid over-tightening to prevent damage to the threads or sealing surfaces. Regular inspection of the radiator cap is recommended to maintain optimal cooling system performance.

Quality Assurance and Warranty

Febi products are manufactured to meet strict quality standards, ensuring reliable performance and durability. The radiator cap 46222 undergoes rigorous testing to comply with OEM specifications for BMW vehicles. While specific warranty details are not provided, Febi’s reputation for quality supports confidence in this replacement part.