99civichatch

hey everyone,

ive been getting kinda crappy gas milage lately, and i think my o2 sensor is to blame. i went on this website but i have no idea which one of these sensors is for my 99 civic hatchback. i wanted to replace both o2 sensors. i figure i'll buy a Bosch since thats the only brand i see trustable. can anyone help me figure this out? possibly tell me how they figured it out too

here is the website:
http://www.autopartswarehouse.com/se...0Honda%20Civic

thanks everyone

driven905

Front (Before cat) Part Number: BS13007
Rear ( After cat) Part Number: W0133-1605519

And so you know, you posted in the wrong section.