Long story but went to replace my lid on the 04 with one I purchased with good clips but didn't fit. Is the 03 04 the one with the the larger or smaller opening?

 

03-04 = Larger

I personally run 99-02 intake hoses, MAF bodies on all my 04's. Slightly stronger and don't break as easy vs the 03-04 setup.

People will argue you MUST use the 03-04 setup with the 4.6L, but all that air going thru maybe a 1/4 inch wider intake tube/maf housing still goes thru the same exact sized throttle body as the 4.0L.... So the larger intake tube/maf housing do absolutely nothing.

 

Since I have a good 04 lid.. I guess I could just swap the maf housing?

Anyone have a bad 04 MAF that would be willing to part with it?

 

You'd also need the smaller intake tube itself. It's a 3 part deal Air Box Lid, MAF, and Intake tube.

 

So if the intake side of the MAF is a different size how is the Bosch maf part number valid 99-04…?

 

Sensor itself is identical. Housings are different diameters.

 

I have an almost brand new 02 setup if you want. Been thinking of putting it up on sale:

1. Lid
2. MAF housing (modified with the screws so that you can take the sensor out)
3. MAF-to-throttle body tube

Long story short: Wanted to convert my '04 setup to '02. Bought all brand new parts but my fuel trims did not like it. Went back to the '04 setup. I also have the MAF sensor, but not sure if it functions well. Can be yours. PM me.