I don't know. The shop ordered them. Probably not OEM; they're just clear plastic lines.

New clear plastic lines will more pliable and less likely to crack from engine vibration.
Performance should be about the same, if the old ones were sealing properly.
Be sure to replace all the crush washers for the banjo bolts when you replace the clear lines.

Remove and check the boost sense lines for soot and hidden cracks.
Replace the two small crush washers for the intake manifold banjo bolt when you have it out to check for soot blockage.
Check that the switchover valve on the firewall is operating correctly (boost goes to ALDA when solenoid off, and boost vents to atmosphere when solenoid engaged.).
Slight boost leaks on this ALDA circuit can reduce performance by partially limiting fuel rack travel under boost conditions.

Additionally, the rubber seals in the ALDA can fail to seal adequately.
Test the ALDA seals (with engine off) by applying vacuum from a Mityvac vacuum gauge to the ALDA input line.
If the ALDA cannot hold a vacuum, then it will need to be re-sealed/replaced.

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78 W116 300SD 'Desert Rose' new as of 01/26/2014
79 W116 300SD 'Stormcloud' RIP 04/11/2022