Overheating small tubes under vehichle, on passenger side leaking; what are these?

djh007

New member
1999 4Runner, overheating: There are these two tubes (maybe 1/4"), on the passenger side, running under the vehicle all the way from somewhere in the engine compartment to the rear of the vehicle -- they have broken and/or have been punctured -- and are leaking profusely, and my truck overheated. (a) What are these tubes? What do they do? (b) Where can I find a parts diagram of the entire vehicle?
 
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