103 589 01 39 00 Caulking bolt - WS14.00-P-0001B

FG 14/49/Set B 

ENGINE 102.92/93/96/97/98/99, 103, 104, 111, 112, 113, 116, 117, 119, 120, 137, 156, 271, 273, 272, 642/ 

Use: 

Caulking bolt M 8 for self-locking square nut at exhaust manifold

Fig 1: Identifying Caulking Bolt (103 589 01 39 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.