Febi 37520 Coolant Expansion Tank Cap

The Febi 37520 is an original Febi Bilstein radiator cap designed for coolant expansion tanks, manufactured to exacting German quality standards. This pressure-regulating cap features a 1.2 bar opening pressure and is constructed from durable black plastic material.

Key Features:

• Opening pressure: 1.2 bar (17.4 PSI)
• Material: High-quality black plastic construction
• Pressure relief valve prevents system over-pressurization
• Dimensions: 2.8 x 2.8 x 5.8 cm
• Weight: 58 grams

Febi Bilstein is one of the world's leading manufacturers of aftermarket spare parts for passenger cars and commercial vehicles, with over 170 years of experience producing OE-quality replacement components. This expansion tank cap serves as a direct replacement for multiple OEM part numbers including Porsche 996 106 447 04, 996 106 447 03, 996 106 447 01, 171 121 321 B, and 171 121 321 C.

The pressure-regulating valve in this cap is essential for maintaining proper coolant system pressure and preventing overheating. Regular replacement of expansion tank caps is recommended as a preventative maintenance measure to ensure reliable cooling system performance and protect against expansion tank damage caused by failed pressure relief valves.