420 SE, SEL W126 09/1985 - 06/1991 M116.965. 500 SE, SEL W126 09/1985 - 06/1991 M117.965. 560 SEL W126 10/1985 - 06/1991 M117.968. This is probably because of modern fuel additives & the introduction of ethanol into fuel.

Other Part Number: 0986438217, 0000742413, A0000742413
Fitment Type: Direct Replacement
Items Included: Diaphragm, O-rings, Seals
Manufacturer Part Number: A000218979708
Country of Manufacture: United States
Mounting Hardware Included: No
Material: Viton
Vintage Part: No
Fuel Type: Gasoline
Brand: Mercedes-Benz, Bosch
Type: Repair Kit
Interchange Part Number: 0438101018, 0-438-101-018, 0 438 101 018.
OE/OEM Part Number: 0438101018
Features: Calibrated, Direct Fit, Easy Installation
Country/Region of Manufacture: United States
Performance Part: Yes
UPC: 197644969869