It seems Mercedes-Benz has discontinued this part which is surprising. Given that, is there a “best” or “avoid” aftermarket brand?

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Providing a home for these cars:
1951 Buick Special De Luxe
1977 Rolls-Royce Silver Wraith II
1970 Rolls-Royce Silver Shadow
1986 Mercedes-Benz 420 SEL
2005 Mercedes-Benz E 320 CDI
2012 GMC Sierra 1500 4X4
1927 Pierce-Arrow Series 80
1931 Pierce-Arrow Series 43
1926 Ford Model T coupe

Check out the water pump "sticky". It looks like new aftermarket is all that's available for our vintage cars, or you might be able to find rebuilt through the usual auto parts chains, but I wouldn't trust them

There used to be a reliable rebuilder near me that rebuilt my OE water pumps, but they moved years ago, but since I drive a lot less now water pumps last longer.

Duke

Ask on the Benzworld R/C107 forum. Many 560SL owners there. MB discontinue some standard parts when there are quality aftermarket parts available, often made by the OE manufacturer.

I bought a Laso water pump for my 72 107. Not many vendors carry them, They were an OE supplier, I believe. Graf is another. Both available here:

https://www.pelicanparts.com/catalog/SuperCat/3489/MBZ_3489_WATPMP_pg1.htm

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5

Thanks, great information.

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Providing a home for these cars:
1951 Buick Special De Luxe
1977 Rolls-Royce Silver Wraith II
1970 Rolls-Royce Silver Shadow
1986 Mercedes-Benz 420 SEL
2005 Mercedes-Benz E 320 CDI
2012 GMC Sierra 1500 4X4
1927 Pierce-Arrow Series 80
1931 Pierce-Arrow Series 43
1926 Ford Model T coupe

Randy, ask your local MB dealer if they can provide you with a rebuilt original water pump.

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Fred Hoelzle