That sure looks like a 126 720 02 14 to me. Have you had a Mercedes-Benz parts specialist look it up?
Randy D.

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W.R.Durrance
ASE Master Tech
Mercedes Tech 20 Years
68 250SE
68 SAAB 96 Ice Racer
69 300SEL 6.3
70 300SEL 3.5
81 300TDT