An exhaust leak may develop due to cracked welds on the front catalytic converter. Replacement of the catalyst is recommended; re-welding of the catalyst is discouraged because it is an emissions device.Google+
Car Problem Reports
Mercedes-Benz ML430 Welds May Crack on Front Catalytic Converter
Mercedes-Benz ML430 Problem
Average Mileage: 77,000 mi (73,000 mi - 81,000 mi)
Visitor, 1999 Mercedes-Benz ML430
crack in front catalytic converter.
going to replace. oh joy.
Amazingly, the car was running better than we can remember in a long time, right before it happened.
cat is bunk and torsion bar is in the way when removing. Crap weld!
Cat cracked and had it welded, told by Mercedes mechanic it is a huge design flaw, one of many.