Their feedback seemed almost too good to be true. LET ME SAY THIS. It IS TRUE. I received a genuine Subaru viscous coupling FROM JAPAN within 3 days of ordering ...
W216 CL550 CL600 CL63 CL65 AMG. W221 S450 S550 S600 S63 S65 AMG. The following BOSCH / AL part numbers are all interchangeable 1x Ballast. 1 035 500 018.