[suikoayanajim]

Hey everyone, i am new to Nissan Forums!
i have 2 questions about my Altima 2.5 S, i need to know what is the size of my OEM Headers?
and also, i would like to know what is the size of my OEM exhaust from the headers to the muffler?
in inches please?
because i want to purchase OBX headers but i don't know the measurements
please if anyone can help me!
i am waiting for your answeres!
thanks

Najim

 

[fivetears]

Buy the ones for fitting an '03 SPEC V QR25DE; Megans will bolt right up.

 

[suikoayanajim]

I see...
but do you know the measurements of the OEM header & exhaust of the Altima 2.5 S?
i guessing it's 1.5" tubing! what do you think?
thanks

 

[fivetears]

That seems reasonable. An exact OD measurement: circumference/pi = diameter. A piece of string works well in the absence of a dial caliper or micrometer.