Forum Discussion

DTony's avatar
DTony
Explorer
Feb 15, 2022

What Chassis do I have

Hi, I have a 2003 National SeaBreeze 1311 on a Ford Super Duty V10 Chassis. I recently had the catalytic converter stolen while the RV was in a commercial storage facility. The shop that is replacing the converter needs to know what chassis is under my RV. The shop says it probably is either a F350 or E350. This information is important because there are two different converters depending on the exact chassis number. Does anyone know which chassis I have or where on the RV I can find this information. Thanks in advance.

Tony
Class A
  • chuckftboy's avatar
    chuckftboy
    Explorer
    Feb 15, 2022
    Class A's were built on the F-53 chassis. E series were basically vans. So you have a F-53 chassis

    You can call Ford with your VIN number and they can give you information on your chassis.
  • DTony's avatar
    DTony
    Explorer
    Feb 15, 2022
    Thanks Chuck, so between the choice of E350 and F350 converters, mine would be the F350?
    Tony
  • rjstractor's avatar
    rjstractor
    Nomad
    Feb 15, 2022
    DTony wrote:
    Thanks Chuck, so between the choice of E350 and F350 converters, mine would be the F350?
    Tony


    Not to steal Chuck's thunder, but your chassis is neither one, it's the F53 stripped chassis. It might be the same converter as an F350, but maybe not. The shop ought to be able to figure it out with the chassis VIN.
  • dodge_guy's avatar
    dodge_guy
    Explorer II
    Feb 15, 2022
    E350/450 is a class C. You have a class A built on an F53 chassis. 2 completely different chassis’s. Find another shop that knows what they are doing!
  • JoeH's avatar
    JoeH
    Explorer III
    Feb 15, 2022
    I'd be looking for a different shop if they don't know what chassis they are working with.
  • way2roll's avatar
    way2roll
    Navigator II
    Feb 15, 2022
    I see you are in CA so this might be a silly question, but do you even need a cat anymore for that year?

    Anyway, you are looking for a cat for an F53. You might get one from an F550 to work with minimal mods.

    Also, it's likely your 2004 is on a 2003 or older chassis since they build the chassis quite a while before the house gets put on. May not make a difference in part numbers but could be worth noting.
  • DTony's avatar
    DTony
    Explorer
    Feb 15, 2022
    Thanks for the responses. I was just told by the shop that my chassis is indeed an F53 chassis. Now here is the problem, none of his suppliers carry a California CARB certified converter for the F53 chassis. They only carry aftermarket converters for the E350 and F350 chassis. He contacted Ford and they claim they don't have them. The shop contacted the referee at the State Air Resources Board for a solution and they responded that they will get back to him in 15 days, what a pain.
  • DTony's avatar
    DTony
    Explorer
    Feb 15, 2022
    As far as needing a converter for a 2003, California law says if it came with a converter from the factory it must have one throughout the vehicles life.

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