So I got the cat cooling nozzles. Fit perfectly just like you said wore out.
Got it fired up and she sounds mint. It was very hazy but after warming it up and going for a drive around the block it was much better.
I don’t have any work for my truck right now so I’ll have to wait to see how it does
166-3650 cooling nozzles alignment
Discussion in 'Peterbilt Forum' started by HotRod359, Feb 7, 2026.
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