Having said that, the 6.7 Cummins is a fairly reliable engine in general. This is especially true if you want to get rid of some emission tools, such as DPF and EGR systems. However, be aware of any potential emissions or legal implications. Otherwise, you can keep your B6.

Overall, the Dodge and Ram trucks with the 6.7 Cummins engine are quite dependable. Of course, it lacks the legendary status of the older diesels, such as the 7.3 PS or 5.9 Cummins. Unfortunately, modern exhaust emissions have a negative impact on reliability in a variety of ways.

How Long Will A 6.7 Cummins Last?

How Long Will A 6.7 Cummins Last

Cummins engines are well-known for their dependability. The 6.7 Cummins engine is one of the most fuel-efficient and mileage-friendly engines on the market. Still, you might wonder how long a 6.7 Cummins engine will last. We did the research so you wouldn’t have to!

A 6.7 Cummins engine’s life expectancy is typically between 250,000 and 350,000 miles.

However, there is more to a Cummins engine’s durability than its mileage. The mileage of a 6.7 Cummins will be determined primarily by the type of riding you do, rather than the country of your truck.

We’ve gathered all of the data you need about the performance of a 6.7 Cummins engine so you can decide for yourself whether or not the engine is truly worth your time. When you spend money on a new pickup truck, you must understand that it will perform its function for an extended period of time.

With any high mileage engine, even if it has a good reputation, you must determine whether or not routine maintenance has been performed. Examine the honesty plan for daily offerings and routine protection work. Your truck’s engine eventually desires a pleasant make to keep your truck’s weight over hundreds of miles.

If you aren’t naturally aware, bring along a knowledgeable friend or a certified mechanic to test some suspension additives.

Because this is a large truck, you should look into the following undercarriage additives first:

  • Front suspension
  • Ball Joints
  • U-joints
  • Wheel bearings
  • Drive shafts

These suspension additives appear to be the standard wear factors on those beasts and are frequently the first to go before the engine gives up the ghost. Inspect the force shafts for excessive play and all rubber seals for leaks and tears.

The most vulnerable parts of a Dodge Ram, as well as other heavy-duty trucks, are:

  • Brake rotors
  • Alternator
  • Starter motor
  • Injectors
  • Wheel bearings
  • Driveshaft

If you’ve noticed that your 6.7L Cummins engine is nearing the end of its life, schedule an appointment with your neighborhood mechanic.

You and your partner can work out any necessary maintenance and compare the cost of your older truck to some of the more modern models on the market.

Cummins engine and various truck manufacturers

Despite the fact that Cummins and Dodge Ram have a lucrative partnership, Ram vehicles aren’t the best full-sized cars to use the Cummins line. Cummins is a third-party supplier, which means it can sell its engines to a variety of manufacturers without violating the company’s agreement.

For example, 6.7 Cummins engines could be found in ProStar, LoneStar, Cascadia, Coronado, Kenworth, and Peterbilt vehicles.

What year is the pleasant 6.7 Cummins and what year did the 6.7 Cummins have def?

Rams have been the favorite truck of diesel drivers since the 1980s, thanks to their dependable Cummins engine and power. The truck has undergone numerous modifications over the last 50 years, with some years being more successful than others. Dodge diesel vans’ best years are 1996-1998, 2006-2007, and 2010-2011.

The generation later has become popular on all 2013+ model year Ram pickups equipped with any model of the 6.7L Cummins turbo diesel. The SCR device necessitates the use of diesel exhaust fluid (DEF), a substance commonly composed of urea and water.

Is it really worth it to delete 6.7 Cummins, or is it horrifying to idle 6.7 Cummins?

To put it bluntly, you no longer need to remove the emissions system from any diesel pickup. Removing the emissions system also nullifies the vehicle’s factory warranty. And, before you assert it, there is no way to prevent a provider from realizing that the emissions system has been removed.

On a hotter engine, gasoline is much less likely to adhere to the cylinder partitions.  When the Cummins 6.7L diesel engine is left idle for an extended period of time, the cylinder temperatures drop. This will increase the amount of gasoline adhering to cylinder walls.


The new 6.7L Cummins has been validated to be the maximum dependable engine at the market. It can effortlessly pull as much as 25,000 pounds. This is why many human beings pick it for their heavy responsibilities. In addition, it’s far an industry-trendy withinside the diesel world.

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