Item UR21822 is the fuel pressure accumulator.1) The pressure tank supply circled in yellow below I don't seem to have one of these near the fuel pump or under the car? is it up at the engine?
nItem UR21822 is the fuel pressure accumulator.
You showed it on pic #2 on your very first post on this thread.
Looks similar to this one :
Find Bosch Fuel Accumulator 0438170004 at discount prices in our extensive Mercedes auto parts catalog. AutohausAZ offers a large selection of Bosch parts online. 1 per car. Fits Mercedes 450SL, 280SE, 450SLC, 450SEL, 280E, 280CE, 450SE. 0004760121 W0133-1606089www.autohausaz.com
Original Bosch fuel pumps seem hard to find.
To get the car mobile, any 55 PSI in-line fuel pump will do the job, just avoid the cheapest chinese junk.
Hope this helps.
Thanks for the file.
Pump # 0 580 254 053 is readily available (fits several Porsche models).
Same info about fuel pressure accumulators ?