If you’ve been around diesel trucks for a while, you’ve probably noticed something interesting.
The trucks that used to be “just used trucks” eventually become “you should’ve bought one when they were cheap.”
We’ve seen it with 12-valves. We’ve seen it with LBZ Duramaxes. We’ve seen it with clean 7.3 Powerstrokes.
And now? The 4th Gen Cummins (2010–2018) is next in line.
The Perfect Storm of Diesel Simplicity and Modern Capability
The 4th Gen Ram 2500/3500 with the 6.7 Cummins sits in a very unique place in diesel history.
It offers a combination that’s getting harder and harder to find:
- Strong, proven engine platform
- Relatively simple electronics
- Extensive aftermarket support
- Modern comfort and drivability
- Relatively inexpensive to purchase (depending on miles, condition, etc)
It’s not too old, it’s not too new, and it's not too expensive.
And that’s exactly why it matters.
The Unlocked ECM Advantage
One of the biggest reasons the 4th Gen Cummins is so loved in the performance world is simple: The ECM is unlocked.
Unlike newer trucks that require unlock services, bench flashes, or additional steps just to tune them, the 4th Gen is far more straightforward.
This makes it:
- Easier to tune
- More flexible for custom builds
- More accessible for enthusiasts
As newer trucks become more locked down and complex, this alone makes the 4th Gen increasingly desirable.
The 6.7 Cummins — Before Things Got Complicated
The 6.7 Cummins found in the 4th Gen trucks is widely regarded as one of the best versions of the platform.
Why?
It delivers excellent power, strong reliability, and proven durability — *without some of the added complexity seen in newer trucks.*
It’s a sweet spot.
Enough modern engineering to perform well, but not so much that it becomes difficult to work on or modify.
G56 Manual Trucks Are Already There
Let’s be honest — some 4th Gen Cummins are already collector vehicles.
The G56 6-speed manual trucks have become increasingly rare and highly sought after.
Clean, low-mileage manual trucks are already commanding strong prices, and that trend isn’t slowing down.
For many enthusiasts, they represent the last era of truly engaging diesel trucks.
They’re Still Affordable… For Now
Right now, you can still find higher-mileage 4th Gen trucks in the:
*$15,000–$20,000 range*
But that window likely won’t stay open forever.
As newer diesel trucks continue to:
- Increase in price
- Become more complex
- Become harder to modify
Older platforms that are easier to own and build start to look a lot more attractive.
We’ve seen this pattern before — and it usually ends with prices going up.
The First “Nice” Cummins Truck?
This one might stir up some debate...
But there’s a strong argument to be made:
The 4th Gen was the first Cummins-powered Ram that truly felt like a refined daily driver.
No disrespect to the earlier generations — they’re legendary.
But let’s be honest:
- 1st Gens were basic, ultra-simple work trucks
- 2nd Gens were iconic, but still rough around the edges
- 3rd Gens improved things, but still leaned heavily toward “work truck”
The 4th Gen changed that. It became:
- Quieter
- More comfortable
- Better riding
- More refined inside and out
It was a truck you could daily drive comfortably — not just tolerate.
Long Production Run = Massive Support
The 4th Gen ran from 2010 to 2018, which is a long time in the automotive world.
That means:
- Huge aftermarket support
- Wide parts availability
- Endless upgrade options
- Tons of trucks for sale at any given time
Whether you’re building a tow rig, a show truck, or a high-horsepower street build, the platform supports it.
Why Values Will Likely Increase
When you combine everything the 4th Gen offers, it becomes pretty clear why values are likely to rise over time.
It checks all the boxes:
- Extremely strong, proven engine
- Easier tuning compared to newer trucks
- Modern comfort without extreme complexity
- Legendary performance potential
- Enthusiast demand
That’s exactly the formula we’ve seen turn other diesel platforms into collectibles.
Final Thoughts
The diesel world is constantly evolving. New trucks get more advanced, more expensive, and more complex.
And as that happens, platforms like the 4th Gen Cummins start to stand out more and more.
Not just as great trucks… but as future classics.
Have questions? We're here to help.
- Phone: 636-429-7020
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Email: info@fassmotorsports.com
FASS Motorsports
25 Town and Country Drive
Washington, MO 63090
