O2 sensors - what brand?

[ElleShooTiger]

I know some cars can be very finicky when it comes to O2 sensors, what do you guys recommend for a 4.0 OHV Ranger? I've found the Motorcraft one on rockauto, but advance auto has NGK's for about the same price after their coupons.

Its got 250k on it, and dont think they've ever been changed. It gets around 17 mpg in the city which isnt bad, but it'd be nice if it got a few more mpgs.

 

[feellnfroggy]

NGK stuff is pretty good, but your cant go wrong with motorcraft. Make sure you differentiate left and right. One has a longer harness and you dont wanna be splicing new wires.