Still looking for a source for interior parts such as *****,sun visor parts, emercency brake lever, mostly plastic parts for 99 sl500.

 

most parts should be available from dealer, part numbers are on the part, except on the visor which is expensive. the part numbers usually start with a 129. you might be able to find used parts on ebay, but will probably have the same issues as yours, that being old and brittle. there is one part that if is still plastic should be replaced. the upper radiator hose runs to the water pump. that hose attachment on the water pump needs to be replaced with metal. don't use any type of hose clamp other than oem, especially on a plastic radiator. no screw type clamps.