1. Produced from virgin plastic and long service life; 2. Resistant to cracking and wear caused by thermal cycling, preventing coolant loss. 3. Manufactured to strict engineering standards and specifications for materials and tolerances. 4. The kit includes everything you need to get the job done right 5. Includes an expansion tank and all necessary components; 6. Allows you to replace only the damaged unit instead of the entire assembly 7. A quality replacement part properly restores cooling function Part Number: 603-284, 603284,2035000049, 203 500 00 49 Fits the following: For 2002-2005 C230 Compressor 2006-2007 C230 Sport 2003-2005 C240 4Matic 2001-2005 C240 Base 2006-2007 C280 (submodel: 4Matic, Luxury) 2002-2004 C32 Base 2003-2005 C320 4Matic C320 Base 2001-2005 2006-2007 C350 (submodel: 4Matic, Luxury, Sport) 2005-2006 C55 Base 2004-2005 CLK320 Base 2003 CLK320 Base 2006-2009 CLK350 Base 2003-2006 CLK500 Base 2003-2006 CLK55 Base 2007-2009 CLK550 Base 2007-2009 CLK63 Base 2008