Yeah, I replaced my oil lines a few months ago, and could only get the lower oil line from Trucktec.
Like Diesel911 said, the quality on those is questionable, so avoid them if at all possible. I ended up having to do the job twice, because the first Trucktec line leaked at the oil cooler end. And with the engine in the car, you really don't want to do this terrible job twice. Once is plenty enough...

The second Trucktec line is holding up fine currently, but ....*knock on wood*, I don't trust it very much and check for leakage frequently (at every fuel fill-up).

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"The MB W123 is so bulletproof, you can drive them forever. Which is a good thing as it takes that long to get anywhere."
Betsie: 1984 W123 300D (hobby, 280k miles)
Myrla: 2001 Mazda Protege 2.0 ES 5spd (daily driver, 130k miles)
The Turd: 2007 Toyota Camry (wife's car, 118k miles)