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Can anyone tell me the difference between 71-78 and 79-86 front brakes? I have an 86 k10 with a 4" lift and I broke one of the extended brake hoses.
They might be routed differently, the fittings on the hose ends may not be interchangable, they might not be the same lengths, etc.
There might be any number of differences - but it kind of begs the question: Why not just replace the broken hose with one appropriate for your model and year?
The fittings are different. The older trucks have 7/16" banjo fittings. Newer trucks are 10mm.