Rated 5 out of 5 stars.
Alright, here's a new fuel accumulator from URO Parts for your classic Mercedes.

It fits a bunch of models like the W124, R129, W126, and R107, including the 300CE and 500SL.

If your Mercedes is having fuel delivery issues, this little part might be the fix.
It's a fuel injection accumulator, part number 000-476-09-21.
It also crosses with 0004760921, 000 476 10 21, and 0004761021, so you can double-check compatibility.
It's brand new, still in the original packaging.
URO Parts makes good replacement stuff for European cars.

If your old accumulator is tired, swap this in and get that fuel system working right again.
Straightforward replacement part.