Which air bag ???

[Norm Vernon]

Hoping someone might have the correct air bag part number for 8 main bags and 2 tag axle bags on my 2004 Marquis - I have number on the rubber of the bags but there are multiple variations of the part apparently. TIA

[Mike Shumack]

What numbers do you have?
I have this info - from my research, but have not had to replace mine, so I can't personally verify this info. But its been posted many times so I believe it to be correct.

[Norm Vernon]

the 8 main bags on mine list as goodyear 566-22-3-143      and the tag axle bags Firestone 1T15L2

[Mike Shumack]

That Goodyear part number is for the rubber bellows. See photo below from the Goodyear Air Spring Catalog. I searched for the Firestone number but it didn't come up.

According to the info I was able to find the front air bags are 11" diameter, and the rears are 12". That makes sense since the rear axle carries more weight. Can you get some measurements (top stud to air fitting spacing) and see if the dimensions in the photos matches what you have.

[Norm Vernon]

I just saw that so I would bet the rest of the info is correct - I am going off of info from the Tech at Freightliner that collected the numbers - I will have to crawl under myself and see whats happening with the rear bags to be sure.

[Lee Welbanks]

The part number will be on the top of the air bag, so you have to remove the bag to be sure you have the correct number. At least they were on my coach 06 Patriot Thunder.