BenzWorld Junior Member
Date registered: Mar 2010
Vehicle: 1987 300SDL; 1988 300E w/ original 5-Speed manual
Location: Colorado, USA
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1265002703 is NOT a reservoir. (Unsurprisingly, the third-party website linked to above has incorrect information.) 1265002703 is simply the original part number for the 1986-87 300SDL radiator; it was superceded by 1265005303, which fits both the 300SDL and 350SD/L. Neither one is available anymore. This information is confirmed by two hours at my local dealer, who called the MB Classic Center on my behalf.
When I need a radiator for my 300SDL, I honestly don't know what I'll do. There are a few aftermarket manufacturers (radiatorpros.com and buyautoparts.com) that claim they have a radiator that will fit (19-01541 AN), but I am skeptical - AND their price has gone up to almost full MSRP of the MB part! Time to drop in a gas engine, perhaps...