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23 Posts
I recently removed my transmission and noticed that the up pipes were leaking. The truck has 120,000 miles on it, and when I removed the tranny the first time the truck had 99,000 miles on it. The question I have is, would me not removing the downpipe when removing the tranny have any thing to do with the up pipes leaking. The reason I ask is that the downpipe is resting on the up pipe on the passenger side. My next question is aftermarket or factory up pipes. My down pipe is 4 inch.