Its a good thought - I had 3 W210's and ran across that before but another issue like you mentioned. Now down to two the 300D and a 2000 320. I have a spare K40 will have to look at the part number as it was out of a non turbo 300D. Been selling off a lot of the heard
when you get close to that 70 mark it gets a little more of a chore to work on these girls.