Anybody knows how much it cost to replace two O2 sensors, namely the Bank 1 upstream and downstream sensors?

Thanks

 

the cost of the sensors can range from around $40 to $100 plus .it depends on the manufacturer. look on the web to compare prices.cheapest i have found is Amazon .com.,but again it depends on the particular 02 and mfr.hope that helps.of course installation costs more uless you do it yourself.