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Discussion Starter · #1 ·
While I am in there, should I be replacing anything else in the area pre-emptively? I am not against replacing something not broken if it is easier now. 154k miles on this 1998 4.0. FYI, replacing OEM header due to crack and cat due to rattling and excessive heat. Just bought this baby and getting her right.

I am guessing I should buy 2 new o2 sensors since both will be out of jeep.

Anything else?
 

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While I am in there, should I be replacing anything else in the area pre-emptively? I am not against replacing something not broken if it is easier now. 154k miles on this 1998 4.0. FYI, replacing OEM header due to crack and cat due to rattling and excessive heat. Just bought this baby and getting her right.

I am guessing I should buy 2 new o2 sensors since both will be out of jeep.

Anything else?

Make sure you get the updated header with the flex sections. O2 sensors are expensive in my book. Wouldn't replace if you aren't throwing any codes. Anytime I'm under the jeep I always set up my drill with paint stripper or flap disk in my grinder and fix any rust.
 
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