The 2004-2009 Quest never sold in great quantities so certain parts OEM only. This may be one of those parts.
I would check http://www.rockauto.com to see if they sell this part. If they don’t sell this part, it is likely an OEM only part.
The saving grace is that many Nissan dealership/parts departments sell online at a discount. I checked a few sites using the parts number you supplied and saw a couple that sell for $200-$300 off. Do an internet search on the part name and number and see what pops up. many times shipping is free.