Mercedes-Benz Engine Coolant Expansion Reservoir Overflow Tank Replacement For CLS And E Class Models CLS350 CLS500 CLS550 CLS63 E63 E55 CLS55 AMG E280 E300 E320 E350 E500 E550 Durable Leak Free Coolant Recovery Tank

Mercedes-Benz Coolant Expansion Tank Replacement, Leak-Free
✔️ Single replacement reservoir, OE-grade, compatible with CLS/E-Class

This engine coolant expansion reservoir is a direct replacement part for select Mercedes-Benz CLS and E-Class engines. The white PP tank stores overflow coolant and feeds it back into the cooling system as the engine cools, helping maintain proper pressure and prevent leaks. Compatible with 2007-2011 CLS350, CLS500, CLS550; 2006-2011 CLS63, E63, E55, CLS55 AMG; 2007-2009 E280, E300, E320, E350, E500, E550. OE numbers include 603-283, 2115000049, FRT2411C, SK603283, Z49022, 210501061564.

✅ OE standard performance: 100% brand new with OE-grade durability
✅ Made from durable PP material to resist leaks and reduce system pressure
✅ Clear view of antifreeze level without opening the radiator cap
✅ OE-number references: 603-283, 2115000049, FRT2411C, SK603283, Z49022, 210501061564
✅ Easy install with included detailed instructions
✅ Color: white; matches OEM appearance on CLS/E-Class

💡 What is a coolant expansion reservoir used for in Mercedes-Benz engines and why replace it? This handy component helps keep the cooling system balanced and prevents overheating. - Stores overflow coolant to prevent loss and maintain proper levels - Returns coolant to the system as the engine cools to keep the loop primed - Simple drop-in replacement with OE-mounting for CLS and E-Class