Purchased 2008 v-10 Ford class A with 30,000 miles. Dealership replaced oxygen sensor before delivery. 800 miles later, check engine light is back on. Diagnostics determined another oxygen sensor fail...
Go on Ebay and check out some from China. If it's not a native Denso sensor it may work just fine with yours. They should be like $25 or less on Ebay from China. They are fine on American engines.