This is a genuine stainless part in excellent condition.
Hard to find one of these in good condition. This one is used but in excellent condition.
1977 to 1980 450SL 450SLC 450SEL and 280SE Fuel Delivering System Fuel Pump Damper.
$88.00
SKU:
GEG-79FIDDAMPER 
Product Details
This damper is mounted between the fuel tank outlet hose and the fuel pump inlet.
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$349.00
1979 1980 450SL 450SLC 450SEL and 280SE Fuel Delivering System Hard Fuel Line and Pressure Compensating Valve
Hard to find a rust-free hard line assembly. Impossible to find a good working pressure compensating valve.
There is only one of these, and it is so rare that we may not see another. Both parts are no longer available new, and pressure-compensating valves are in high demand. The compensating valve has been opened up and inspected and is in good condition.
$825.00
1979 1980 450SL 450SLC 450SEL and 280SE Newly Rebuilt Fuel Delivering System
Complete but missing the fuel hardline between components and the pressure compensating valve. Use those parts from your existing unit.
Only one available. Check out the before-and-after pictures. Kent redid this unit himself. Study the pictures carefully and note what is not included.