You need 3 meters of 3mm and 1 meter of 5mm, you'll have a leftover of the 3mm but not the 5mm.
I replaced mine as they were badly chaffed and instead of buying OEM, i purchased samco high quality silicone vacuum lines (they're really thick) and added heatshrink tubing at every places were it was clamped or it could wear... I was also able to label them to the correct colors!
The only thing that broke in the install is the support for my N239 valve, and i have yet to repair it, i think i'll try abs cement
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