For those who might care that is the Merc part number for a SLK320 (170 means R170 the SLK line number) & means it is an OEM part. Mine should arrive next week and will see.


May be hard to believe but Merc screws things up also. The M272 engine had a defective balance shaft gear & for some unknown reason they put a bolt under the flywheel. On a 3800 Buick the R&R is trivial, on a Merc you have to pull the engine.


However like GM, Ford o, or Chrysler they have many many suppliers, most being the lowest bidder and monumentally screw some thing up.