Better flowing intake for 5.7 w/Ecodiesel lower airbox

[Hemi395]

Thought I'd share this with the forum, the Ecodiesel lower airbox takes the same air filter and top lid as the 5.7 trucks but has an inlet that is roughly 50% larger. The part numbers for these are:

Inlet: 68190706AB
Lower Box: 68232657AC

Links to where I got them:
https://parts.allmoparparts.com/oem-parts/mopar-air-inlet-duct-68190706ab
https://parts.allmoparparts.com/oem-parts/mopar-air-cleaner-body-68232657ac

I took a pic of my Trinity with some air intake PIDs to show it flows really well.

These parts cost around $60. So for those that want to keep things all factory parts but want to have a better flowing intake without spending hundreds this is a good choice.

Please note this is not needed on the 6.4 trucks as they already have a lower intake box that uses the bigger Ecodiesel inlet tube.



You can see by the "P-RAT MAP BARO" pid that it hit 1.00 which means the engine is getting air equal to barometric pressure. This means the intake has virtually no measurable restrictions. The OAT was about 35* that day which means the engine is injesting air 7* above ambient temp. "MAP VAC" goes down to almost 0 almost every time the throttle is pressed confirming the P-RAT value.

 

[U&A]

AWSOME INFORMATION !!

Great find sir.




Sent while firmly grasping my redline lubed RAM [emoji231]

 

[Hemi395]

Also the 6.4 Hemi lower box is a different PN but it takes the same inlet tube as the Ecodiesel lower box so this really wouldn't apply to the HD trucks with a 6.4.

 

[U&A]

And correct me if im wrong Cory but the Eco-Diesel and the 6.4 Hemi share the larger sized opening in the airbox. So this modification ONLY pertains to the 5.7 guys...

Correct?


Sent while firmly grasping my redline lubed RAM [emoji231]

 

[U&A]

[emoji23]. LOL[emoji3595][emoji3595][emoji3595]

We posted at the same time
[emoji23][emoji23]

Thanks for clarifying sir

Sent while firmly grasping my redline lubed RAM [emoji231]

 

[likes2build]

WOW @Hemi395 ! Excellent information, might not be much for my Pentastar but more air is always better and at that price I'm doing this one. Thanks

 

[Hemi395]

[emoji23]. LOL[emoji3595][emoji3595][emoji3595]

We posted at the same time
[emoji23][emoji23]

Thanks for clarifying sir

Sent while firmly grasping my redline lubed RAM [emoji231]

Great minds [emoji23]

 

[Ramm5.7]

Well THAT figures..lol, after I got a vararam. And me with a custom painted oem cover!
Isnt the opening in the fender the same size thereby restricting flow through that opening?

 

[Hemi395]

Well THAT figures..lol, after I got a vararam. And me with a custom painted oem cover!
Isnt the opening in the fender the same size thereby restricting flow through that opening?

Yeah the fender opening is the same. However the factory 5.7 inlet tube takes the fender opening and makes it smaller where it goes into the airbox. The Ecodiesel inlet tube stays the same size as the fender opening right into the airbox.

LOL well the Vararam is definitely a better flowing intake than this. I have one as well and the intake temp cools down much quicker when you're going down the road than the stock Ecodiesel lower box/tube...

 

[Ramm5.7]

Yeah the fender opening is the same. However the factory 5.7 inlet tube takes the fender opening and makes it smaller where it goes into the airbox. The Ecodiesel inlet tube stays the same size as the fender opening right into the airbox.

Ah sorry, I missed your inlet tube pics!
Thats a big improvement in airflow for pretty cheap as opposed to aftermarket! Even the 3" add a tube I added to my oem box made a difference