g1teg

Bought a '00 parts jeep, am tearing it down and found this header.




Looks like there are two holes for O2 sensors, although he has his in the same spots as mine it seems. One when it dumps into a single pipe and then after the Cat.

Will this work on my '99, (I know it fits, but should those 02 holes be filled with 02's instead of blocked?

Is this worth the work to change?

g1teg

Ok Looks like this is the rugged Ridge header?

Question remains, worth swapping over to my Jeep (performance wise? Mine is not cracked)

Ok to run with the O2 bungs plugged, and keep my 99 o2 setup downstream?

Jeepin'_Aint_EZ

In short, no it's not worth the work to swap to this header. But yes, it's ok to leave the bungs plugged the way they are, if you decide to swap it.

SatiricalHen

Not worth the swap. Looks like a mix between California emissions and non emissions.

g1teg

Not what I expected to hear!

Why, if its not worth the swap from stock, are these things $400+?

KaMoore

Because people will pay $400.00 to say they have a header on a 4.0.

Jeepin'_Aint_EZ

because snake-oil. A header offers very little increase in power on 4.0's.

g1teg

Well ok then! Thanks guys! Would've waisted my time

Ralph77

I am with SatiricalHen on this one. Are that white and black connectors O2 sensor ones? If so that makes me think it is a CA Emissions vehicle. That looks like a federal emissions '00 pipe under the header. White does the white sticker in the engine compartment say?

g1teg

Definitely not CA emissions vehicle, as it's Canadian. It has the same 02 sensors as my dd.