272 589 03 63 00 Assembly link - WS05.00-P-0227B
WARNING: This page is about a different car, the 2009 Mercedes-Benz E550 and 2008 Mercedes-Benz E550. However, it is still accessible from the selected car via links, so may be relevant.
FG 05/Set B
ENGINE 272/979, 273
Use:
Assembly link for connecting the repair chain with the installed chain when changing the timing chain.
NOTE:
Assembly links must not be left in the engine.
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.