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Q: vacuum hoses

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I'm changing my vacuum hoses. What's the difference between the hoses with high psi's like 1000 and 1250, and the ones that have low psi's like 300?
My car has a manual transmission.

I wouldn’t be concerned with PSI rating in regards to vacuum hoses. Vacuum hoses for automobiles are very generic, and anything that is called a vacuum hose should work.

Good luck!

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