A few of the 14 or so bolts that have to be removed for the lower shield are missing so I was looking to order some replacements and just wanted to make sure I'm ordering the right bolts. Is part #4 "retainer" the bolts that hold the shield in place in this diagram? http://www.fontananissanparts.com/pa...layCatalogid=0

 

The lower splash shield uses only one of the plastic retainers you are referring to. There are also 12 10mm bolts that hold the plastic shield in place. You should check with the parts dept of a local dealership to get the right part #.