I know they are different part numbers, but will the flex discs from a 450SEL W116 fit a 300SD W116? They look identical and I am wondering if the ones made for the 450SEL are just heavier duty (and would possibly last longer).

The reason I ask is because my 300SD needs flex discs badly and if I see a 450SEL at Pull-A-Part with recently replaced flex discs I want to know if I should grab them. Apparently the 280SE uses the same flex discs as the 300SD.

Right now I don't have much spending money since I am saving up for a road trip (in my other Mercedes), but if I can't find any nice used ones then I'll just buy new sometime later. The 300SD needs lots of work to be a driver anyway. But if I found a set of new flex discs in Pull-A-Part for only a couple of dollars as opposed to over $100 new, that would be really cool.

The funny thing, is all of those flex discs look the same. The only difference I can think of would be how much force they are designed to take from the engine. It makes me wonder if they all bolt up.

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1967 W110 Universal Wagon, Euro, Turbo Diesel, Tail Fins, 4 Speed Manual Column Shift, A/C
1980 W116 300SD Turbo Diesel, DB479 Walnut Brown, Sunroof, Highly Optioned, 350,000+ Miles