You will pay 3 or 4 times what them bolts are worth at the Dealer. Remove one from the other side and take i to ACE Hardware and match it with Stainless hardware. Youll get a better bolt for half the price
6.00 for 3 bolts, nuts, washers. Eh...not going to break the budget.
And I'll have the info to go to local store to upgrade if necessary.