Upgrading the Turbo on a 2007.5–2018 6.7L Cummins RAM Truck: What You Need to Know

If you own a RAM truck powered by the legendary 6.7L Cummins, chances are you’ve already discovered why this engine has such a loyal following. From daily driving to heavy towing and performance builds, the 6.7 Cummins delivers serious torque and long-term durability.

That said, one of the most common upgrades owners consider — especially as mileage climbs — is the turbocharger. Whether you’re chasing better throttle response, more pulling power, or simply replacing a tired factory unit, a turbo upgrade can completely change how your truck feels.

A Quick Look at the 6.7L Cummins Era (2007.5–2018)

The 6.7L Cummins debuted midway through the 2007 model year and ran through 2018, powering a wide range of RAM heavy-duty trucks. You’ll find this engine in:

• RAM 2500 (2007.5–2018)

• RAM 3500 (2007.5–2018)

• Cab-and-chassis models like the 4500 and 5500

Over the years, horsepower and torque numbers increased, emissions systems evolved, and transmissions improved. But one thing stayed consistent: the use of a variable geometry turbocharger (VGT). While the factory VGT works well for stock applications, it can become a bottleneck — or a failure point — as trucks age or are modified.

Why Upgrade the Factory Turbo?

Many owners start thinking about a turbo upgrade for a few common reasons:

• Sluggish response: Stock turbos can feel lazy off the line, especially with larger tires or added weight.

• Towing demands: Heavier trailers push the limits of the factory unit, increasing exhaust gas temperatures.

• Reliability concerns: High mileage, soot buildup, and stuck vanes are common issues with older VGT turbos.

• Performance goals: Even mild tuning can quickly outgrow the stock turbo’s comfort zone.

A properly sized upgraded turbo can address all of these issues without sacrificing drivability.

A Balanced Upgrade for Street and Work Trucks

For owners who want more airflow without turning their truck into a temperamental race build, a drop-in VGT replacement is often the sweet spot. One standout option is a 63mm HE300VG-based turbo designed specifically for 2007.5–2018 6.7 Cummins engines.

This type of turbo keeps the factory mounting and variable geometry functionality, while improving airflow and durability. The result is a noticeable gain in performance without the downsides of oversized fixed-geometry setups.

What drivers typically notice after upgrading:

• Faster spool-up and stronger low-RPM response

• Improved towing confidence on long grades

• Lower exhaust gas temperatures under load

• Better compatibility with mild to moderate tuning

It’s an upgrade that works just as well on a daily-driven RAM 2500 as it does on a hard-working 3500 hauling equipment.

Matching the Turbo to Your Truck’s Role

Not every 6.7 Cummins lives the same life. Some trucks spend their days commuting, others tow fifth wheels across the country, and some are built for performance. The advantage of a well-designed 63mm VGT upgrade is its versatility.

• Daily drivers: Smoother power delivery and better throttle feel

• Tow rigs: More usable torque and better heat management

• High-mileage trucks: A fresh, more robust replacement for worn factory components

Instead of building around extremes, this kind of turbo supports the way most RAM owners actually use their trucks.

A Smart Upgrade for the Long Haul

The 6.7L Cummins has earned its reputation as a workhorse, but even the best engines benefit from thoughtful upgrades. Replacing the stock turbo with a modern, improved VGT unit isn’t just about adding power — it’s about restoring confidence, improving efficiency, and extending the life of your setup.

If you’re running a 2007.5 to 2018 RAM 2500 or 3500 and want a turbo that complements the engine’s strengths without overcomplicating things, this upgrade deserves serious consideration.