How long will the factory radiator/heater hoses last? My truck just hit 100,000 miles and was wondering when will these hoses need to be replaced. The dealer tech said he rarely replaces these because they just last.

 

Ya, pretty much what he says, mines got 205k km's and the upper is like new, the lower I think is questionable now. I guess the bottom one isn't cheap but oh well. Often they bulge or leak a bit so keep an eye or smell for this.