Yes, thx, that's what I got from this forum: use BOSCH or suffer potential connection issues. So that's what I purchased. Didn't even consider any cheap alternatives. The Hitachi though, is more expensive and seems like it claims being the OEM part for the MB CL65. Considering that engine probably generates even more heat than ours, perhaps that Hitachi would be one alternative to actually give a try. But like I said, based on the forum info, I never even considered anything other than the BOSCH.