After finding a small leak in what I thought was my upper or lower radiator hose at a rest stop I turned around and made it home. Then I opened the hood, it seemed like the lower hose was leaking when all of a sudden the upper hose neck snapped spraying me with steaming hot coolant. At some point the radiator on my 1991 300E 4-Matic must have been replaced because I thought Behr was stock. I quickly ordered a Behr for $40.00 more than that POS Nissen. Is the Nissen company so cheap and negligent that they can't insert a simple metal sleeve in the neck like Behr? I would really like to get my hands on the neck of the engineer that thought reinforcement was not needed after all over the years alot of clamping down occurs at this point. I guess thats why on all my other 1980's Mercedes and also on my 1973 BMW Bavaria the Behr's are still working fine. Opinion:Always buy a Behr NEVER buy a Nissen. Also be very careful around those Nissens they can and will blow at any minute!