How many catalytic converters does the 2007 Nissan Frontier have?

There is a single catalytic converter assembly on the 2007 Nissan Frontier. The OEM compatible part is a Bosal Direct Fit Catalytic Converter and Pipe Assembly, part numbeR842101635, which runs around $1200 for the part, and will cost almost $140 in labor to have replaced. Symptoms that may indicate You need to replace Your catalytic converter are if You notice a sudden drop in fuel efficiency, failure to accelerate when You stomp on the gas, a check engine light coming on, and a rotten egg (sulfuric) smell coming form the exhaust.