Vacuum line diameter

spooldup

Super Member
Does it matter if you ran a different id vac line to a part on the truck even if it's only slightly smaller than the stock one? I see that on the truck there are different size lines. Is it like that for a reason?
 

0966Sy

Code what?
Just use 4mm for the smaller and 6mm for the larger. Not sure about your question though.
 
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