Hi all...74 2.0 liter with Djet...
What size are the fuel lines in the engine compartment that connect to the fuel rails?
Need to replace a couple...
Thanks

IIRC, 8mm connecting the 2 fuel rails together *mm from pressure reg to return line and 7mm from fuel rail to injector. I've had wine tonight and might be prone to error.

Make sure you do NOT used the braided hose UNLESS you are going for 100% original. Porsche replaced them on the fuel line recall. Use modern fuel line.

What Mark said. It should be ethanol rated too!

We could tell you the size but why don’t you just measure the fuel rail OD yourself?

The fuel rails are 100% accessible to measure without taking anything apart.

Because I don't have it apart. But thanks for your helpful comment.

5/16" SAE 30R9 FI hose.

The FI hose is important. It is rated for higher pressure. Standard hose can work but you are taking a gamble.