I was doing some browsing on Rockauto and noticed Dorman Products now has replacements for the rubber air ducts on the air intake systems for the V6 R51 Pathfinders 05-12, VQ40DE-equipped Frontiers and Xterras. Previously, we had to replace the entire intake system from Nissan, which runs about $65 online+shipping. This kit has both ducts with clamps and sells for $27+shipping from Rockauto.com. It's Dorman #696-009:
https://www.rockauto.com/en/moreinfo.ph ... 37&jsn=837