Fuel Pump Cap Nut (12 mm) for 300SDL (1986-1987), 300SE (1988-1993), 300SEL (1970-1991), 300TD (1979-1985), 350SD (1991), 350SDL (1990-1991), 380SE (1984-1985), 380SEC (1982-1983), 380SEL (1981-1983), 380SL (1981-1985), 380SLC (1981), 400SE (1992), 420SEL (1986-1991), 450SE (1973-1976), 450SEL (1973-1980), 450SL (1973-1980), 450SLC (1973-1980), 500SEC (1984-1985), 500SEL (1984-1993), 560SEC (1986-1991), 560SEL (1986-1991), 560SL (1986-1989), 600SEL (1992-1993), 280SE (1970-1980), 280SEL (1972-1973), 350SL (1972), 230 (1977-1978), 190E (1984-1987), 240D (1977-1983), 260E (1987-1989), 280CE (1978-1981), 280E (1977-1981), 280S (1975-1976), 300CD (1978-1985), 300D (1977-1985), 300E (1986-1992), 300SD (1978-1985)