Mercedes Expansion Plug - Febi Bilstein 000443034002

Product Information

An engine expansion plug, also known as a freeze plug or core plug, is a small, round metal or rubber disc inserted into the engine block. Its main function is to seal off passages created during the manufacturing process of the engine block, where sand cores were used to create the internal coolant channels. Additionally, expansion plugs offer some protection against cracking in extremely cold temperatures by allowing room for expanding coolant if it freezes.

• Coolant Leaks: A common sign of a failing expansion plug is a visible coolant leak around the plug area. You may notice coolant pooling underneath the engine or dripping from the plug location
• Overheating Engine: Leaking coolant due to a failed expansion plug can lead to reduced coolant levels, which can eventually cause the engine to overheat due to insufficient cooling

About Febi Bilstein

Ferdinand Bilstein’s febi brand is a global leader in the replacement parts market, known for offering high-quality alternatives to original equipment (OE) parts. With a range of over 50,000 technical replacement parts for passenger cars, light commercial vehicles, and trucks, febi ensures that consumers and professionals have access to reliable solutions for maintaining and repairing vehicles. The brand is committed to staying at the forefront of automotive technology, providing parts for hybrid, electric, and hydrogen-powered vehicles, and continuously expanding its product offerings to meet the demands of the evolving aftermarket. febi’s global presence spans over 170 countries, supported by advanced logistics centers that ensure fast delivery and product availability worldwide.

A strong focus on quality sets febi apart, as their products match or exceed OE standards, backed by rigorous quality control and in-house manufacturing capabilities. febi offers comprehensive repair solutions for all major vehicle brands and models, ensuring that critical parts are readily available for professional workshops. With a deep-rooted tradition in mobility and a future-oriented approach, febi is a trusted partner in keeping vehicles performing optimally, regardless of their powertrain or application.