W126

The 420SEL was Mercedes-Benz’s long-wheelbase V8 S-Class sedan for the U.S. market, positioned below the 560SEL and above the six-cylinder 300SEL in the late W126 lineup. It used the 4.2-liter M116 V8 and was sold in the United States from the 1986 through 1991 model years. This generation represents the original W126 420SEL configuration with no separate facelift phase identified in the provided model context.