If im replacing the exhaust manifold on my 07 h3 with a new one, should i replace the 2 o2 sensors with new ones? H3 has 150k miles on it. And if so which brand do i go with? Thanks hope this is right section to ask.

 

I would, GMs use ACDelco parts.

 

thanks for the quick reply. My h3 3.7 has the broken bolt in exhaust manifold issue at the moment. So thought i would do a freshen up on her. Got new exhaust manifold,gasket,plugs,coil packs,valve cover gaskits, tensioner and idler pulley new belt, throttle body gasket and intake manifold gaskets. Any other suggestions while im this deep in it.

 

Make sure to use ACDelco replacement plugs, the I5s will eat up aftermarket spark plugs in short order.

 

Yea i ordered everything ac delco. Just woundering if there is any common thing i should replace while im elbow deep in her.

 

the radiator? lol...

 

i think that has aleady been replaced. Took a look at it today.