Are these the ones I need and are all 4 the same? Please let me know.

1998 F-150 4.6L 2wd stock cat setup

http://cgi.ebay.com/ebaymotors/ws/eB...MakeTrack=true


Thanks a million in advance. I have over 68k on the truck and I just bought it used this summer, I have read some posts on here that say folks like to replace these every 60k or so. I am not throwing any codes as my Check Engine light is not on. I just thought it might help with gas milage a bit.

Thanks,
Mwkatm

 

Anyone know if these will fit the 1998 ford f-150 4.6
and are all 4 of the O2 sensors the same?