Oxygen sensors are the kryptonite of lean burners. From Honda they are supposed to be $400 parts.
Wait, what?
$516.15 shipped from Majestic.
It says $680.88 list price.
Since when?
$260 from Amazon
But it is made by NGK\NTK, and that is $144 from Amazon
Just saying they are expensive, but not necessarily as expensive as it might seem.