o2 sensor bank 1 sensor 1 on a 2001 prelude

[BB6dohcvtec]

do i really need a o2 sensor tool to change it out?

[yungdz]

big wrench might do the trick. But you can rent the tool from any autoparts store and return it when your done. I just did that yesterday as a matter of fact.

[dorin48]

If you can get to it easy enough then no tool is needed but just FYI the size is 22mm.

[Barefoot]

no u dont need it