What is M-B's labor warranty for parts purchased from M-B but not installed by an authorized M-B dealer?


Parts salesman at two different dealers have said labor IS covered but the warranty sheet one provided (S-0417-P95, Service and Parts Literature, 09/95) states "Labor for removal and replacement of defective parts or accessories sold but not installed by an authorized dealer" is NOT covered.

The MBUSA website refers you to a dealer for warranty info.
Is there a newer warranty sheet than this? Is labor covered?