350SDL expansion tank availability
 

I am looking for an expansion tank for my SDL, and Pelican does not have one available. Are these NLA? If so, is there a substitute?

No they are still available. They've been about $200 expensive the last 5 years.
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The cheapest I found was Hamburg Tech at $100 but not sure of the quality. I just as well go with OE stuff.

Do you mean the pressurized reservoir in the engine bay or the overflow tank inside the fender?

Sixto
83 300SD

That is odd, I searched for it in the SDL listing for '86-'91, and it showed nothing available. I typed expansion tank in the search, and only the plug kit came up. Yes I too later found them on ebay for around $200 OUCH!

Try to visually compare your tank to alternatives. When I needed to replace the overpriced tank in my 190D turbo, I found that there were other Mercedes cars with nearly identical tanks. I eventually discovered that the 500E tank, despite having a different part number, was identical in every respect except the corners were a little more rounded and the price was half. Mercedes seems to invent the same tank over and over again, so a little persistence will help.

http://www.peachparts.com/shopforum/diesel-discussion/369176-anyone-have-spare-190dt-expansion-tank.html

There is not another one that will work as far as I know. The SDL has a unique shape to fit around the air cleaner.

According to the resource I found the PN of the tank is 1265001749. It fits the 300SDL, and 350SD/L. Cost is $160 at MB. I'd suck it up and buy the quality part.

-J

Could be worse priced!

That lower rad hose I priced around $90 once.