I would like to buy locally, Auto Zone and O'Reilly are US only and I find the NAPA site a PITA.
The Porsche spec is 4mm OD and 1mm ID, the OD is important because all the connections are made with the OD, i.e. the tube is a male connector. I have found some vacuum tubing on Amazon that is 4mm OD and a decent temperature range but it is 2mm ID, is the ID important?
https://www.amazon.ca/Mssoomm-Silicone-32-81ft-Flexible-Transfer/dp/B08GKN8GGR/ref=sr_1_34?crid=MW7J2J0S9MQD&keywords=1mm%2BID%2B4mm%2BOD%2Bvacuum%2Btube&qid=1689528397&sprefix=1mm%2Bid%2B4mm%2Bod%2Bvacuum%2Btube%2Caps% 2C120&sr=8-34&th=1
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Grant
Arctic Silver 2000 Boxster S - bought with a broken engine, back on the road with the engine replaced
Green 2000 Boxster 5-speed and 1978 928 auto
1987 924S 5-speed (Sold) - Blue 2000 Boxster 5 spd (Sold)
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