S13 SOHC vs DOHC OEM airbox

[Crazyced]

I'm doing a DOHC swap in my 90' 240sx and for classing reasons I need a stock intake.

Since the one I have is very clean and parts are hard to come by, can anyone confirm that the SOHC and DOHC airbox themselves are compatible? Ie, I just need to swap the MAF, intake tube and rubber coupling to the TB?

Thank you!

[AKADriver]

I believe the SOHC airbox has an IAT sensor and the DOHC airbox does not. Otherwise they have the same shape/volume/etc. The lower housing the same part number the upper housing is not.

If you swap a DOHC in and re-use your airbox just plug the IAT port.

[thomasfrank]

Originally Posted by Crazyced

I'm doing a DOHC Geometry Dash Lite swap in my 90' 240sx and for classing reasons I need a stock intake.

Since the one I have is very clean and parts are hard to come by, can anyone confirm that the SOHC and DOHC airbox themselves are compatible? Ie, I just need to swap the MAF, intake tube and rubber coupling to the TB?

Thank you!

Yes, in many cases, you can swap the SOHC and DOHC airboxes by switching out the MAF sensor, intake tube, and rubber coupling to the throttle body, as long as the parts are properly aligned and secure. However, you should be aware that minor adjustments might be required, especially with the throttle body and MAF placement.
If your airbox is in great shape and you?re trying to avoid sourcing a new one, this is a good option. Just keep in mind that exact fitment could vary, and ensuring proper air intake flow and sensor compatibility is critical.