Anyone ever replace the B2 piston in the automatic transmission of their W126? I have read enough scary stories about transmission failure to give it a try as my 380 SE is approaching 100,000 miles. Aside from Stu Ritter's article, any other sites with ideas / pictures on this?

If it is not broken, don't go in. I have replaced about 10 or so in 10 years. They do break, but not often. And usually, there is a reason.

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Benzmac:
Donnie Drummonds
ASE CERTIFIED MASTER AUTO TECHNICIAN
MERCEDES SPECIALIST 11 YRS

Thanks for the email. My SL and SE both have the same transmission, I just replaced the fluid and filter in the SE and it now shifts better than the SL (no surprise). That seemed a simple operation, and as I understand that there was an upgraded B2 piston available, I thought I would try it. Maybe not. The SL sees very light summer duty (5000 km/ year), while my SE is a year round car which pulls a light trailer on weekends. Neither have high mileage (135 km on the SL and 154 on the SE). I just prefer maintenance (cheap) over repairs (expensive).