This is for one genuine Mercedes W123 coupe door outer window seal made in Germany. Mercedes also calls these rails due to the metal reinforcement inside of the rubber.

This is the long straight seal on your door's outer window sill. When the window is down you would rest your arm on this seal. This is one of the easier glass/body seals to replace. After you buy it just ask me and I can send you a photo as a reference for how it fits under the aluminum trim.

There are lots of copies of these seals that aren't shaped quite right, don't fit quite right, squeak and drag against the glass and have to be glued because the dimensions are off. This is the original German made seal. Unlike copies there is no such thing as having to glue these seals. Everything is a mechanical/press fit exactly as designed. The other big difference with OE seals is the quality of Mercedes' rubber compound. Your original seals lasted 40 years for a reason.

1237250265, 123 725 0265, 123 725 02 65

Coupe production facts: W123 coupes are rarer than you might think. Total worldwide production for the 300CD was about 8,000 turbos and 7,500 non-turbos. In the 80's these were $34k cars($100k today). 40 years later most of the coupes are long gone. Get your coupe sorted out and you'll make it all back if you ever sell it.