Thanks for reaching out, Lee!
I recommend installing the Firestone Ride-Rite Air Helper Springs # F22ZR on your 2019 Ford E-450 Class C motorhome because the Firestone air bags are the best on the market and this is the only kit that fits your vehicle.
I also recommend checking out the Air Lift WirelessONE Tank Kit for Air Helper Springs # AL67DQ so you can monitor and adjust the air bags, plus you get the air tank and hose so you can use this same kit to fill your tires or anything else... view full answer...