I have an air filter housing to fit a 190E 2.6 that is in nearly perfect shape. $35. + actual shipping cost.

I bought it from a fellow forum member to fit my 300SE, and while it fits, it has a lower profile to clear that car's lower hood line which means the filter element is shorter and only flows 435 CMF while the correct filter element for the 3 liter flows 575 CFM.

Anyway, I didn't realize it until I'd throughly inspected it for cracks, (none found), and cleaned it of every spec of oil, grease and dirt. I also replaced the hold down nuts for the steel cover with stainless steel. The only thing is doesn't have is a new filter element.

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2000 Mercedes S500
1990 Mercedes 560SEL
1970 Triumph Spitfire