I'm looking to replace all the vacuum line in my '86 MKII, so it seems that buying it by the roll would be cheaper. There are not any aftermarket shops in my immediate area, and with my work schedule, ordering online would be easier for me.
3.5mm ID should work fine. Its a perfect size replacement for the factory stuff. 15ft should do all the engine vacuum lines. If you want to do all the AC vacuum stuff I'd double it at least.
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