2021 E450 dual alternator

[brianjw]

Does anyone have this package, or can anyone help with parts? Specifically with the gas 7.3L.

My RV has the single 210 amp alternator, and I’d like to upgrade to a 240/157a dual alternator setup.

Nobody lists an aftermarket setup yet and the dorks at the parts dept were not just unhelpful, but angry that I was asking... Supposedly without a vin number of a unit with dual alternators, they can’t look at parts diagrams and tell me what brackets/idlers/belt etc would be required.

Thanks for the help!

[pnichols]

Let me chime in here with some thoughts:

1. Large and reliable alternators will probably become more important as lithium coach batteries become more common in motorhomes. Supposedly lithium battery banks charge fast - but only if one has a charging method that can deliver the high currents that the batteries will accept. For dry camping - especially when many hours of enough solar aren't available - a large capacity alternator driven by an idling chassis engine might be very useful.

2. Since any vehicle's alternator is very important, having two on board - when one or the other is getting used a lot for high current lithium coach battery charging year after year - to me would be a necessity for equipment backup purposes should one or the other fail when drycamping. Always have a Plan B for critical Plan A failures!

P.S. I think that emergency service vehicles often have dual alternators.

[KD4UPL]

What "parts" store were you at? Autozone or Advance are likely clueless. NAPA or Federated would likely be a bit more helpful. The Ford dealer parts department would likely be your best choice.
I too would check with Ford on possible warranty complications.
What are you going to be running with the extra power? 210 amps is huge in the world of automotive alternators.

[Dusty_R]

theoldwizard1 wrote:
Curious. Why do you think you need dual alternators ?

X-2

[bobndot]

Is it a good idea to do this while the brand new rv is still under warranty ?

[theoldwizard1]

Curious. Why do you think you need dual alternators ?

[Home_Skillet]

You can find lots of info here.
You can also contact the Ford Upfitter team on there.

https://www.fordbbas.com/home/