I was replacing some wonky fuel system parts while I was trying to find out why my NOS fuel pump is howling like it's got a belly-ache. I decided to replace the Fuel Damper. Having already flushed the tank, I installed a filter between the fuel tank and the pump (as I had read in the hundreds of earlier posts) as well as the Pressure Regulator -but alas the pump is groaning like its had too many Jalapenos!

Finding a Fuel Damper was not as easy as I thought, so I remembered that these were Bosch L-Jetronic systems and that there were many cars that used L-Jetronic. What I found was a Mercedes part (W0133-1615150) here: http://www.importeccatalog.com/item.wws?mfr=BOSCH&sku=W0133-1615150&source=GOOGLEBASE.

I thought that I would pass the number along. It is Bosch (OEM), it matches the picture in the FSM and it was $65! It may not solve the noise, but it was the cheapest first step.

Thank you! It is appreciated, I have the same problem. It kind of works in my favor though, since my gas gauge is off and it only happens when it's low on gas haha.

Thanks for this info!