NP203 Transfer Case
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These gear teeth on the inside of the carrier (which are chipped and worn) index into the sliding cogs on the shifter. Excessive wear in this area accounted for the majority of noise in this 203, and new parts would be relatively expensive to fix just this one problem. A shaft-style part-time conversion kit could be used to replace the differential side gears but the sliding cogs would remain worn, so noise would still be evident. It was cheaper and better for us to install another NP203 from Boyce. View Related Article
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