Exclusive Content
Original Shows, Motorsports and Live Events
Due to the EU’s Global Data Protection Regulation, our website is currently unavailable to visitors from most European countries. We apologize for this inconvenience and encourage you to visit www.motortrend.com for the latest on new cars, car reviews and news, concept cars and auto show coverage, awards and much more.MOTORTREND.COM

Top 10 5.9L Cummins Tech Articles

Drivetrain and other upgrades for trucks powered by Cummins fans’ all-time favorite engine.

Dec 4, 2020
There is no arguing the notion that Cummins diesel engines are widely revered. Many enthusiasts wholeheartedly believe the powerplants are the greatest oil burners ever produced. Seriously, the brand has legions of followers.-pp
But, given all of those loyal fans, only one Cummins diesel—the 5.9L 6BT (12- and 24-valve)—sits at the top of the popularity ladder when it comes to modifying and upgrading for increased performance.
The engine had a remarkable run in Dodge Ram trucks (1989 to 2007) and essentially is one of the catalysts that started the boom in exploring high performance for non-commercial/consumer-category diesel pickups.
As engines that are very receptive to air and especially fueling enhancements, the bulk of 5.9L Cummins-tech content that MotorTrend's truck staff produced over the years is highlighted by turbocharger installations and dyno tests, fuel-injector and injection- and/or lift-pump upgrades, as well as reports on preventative-type hacks and products to ward off potential damage to engines, caused by stock parts that typically succumb to increased forces, pressures, etc., when power and torque increases.
We can probably do "Top 10" rundowns on our 6BT content from now until the end of time. Here is a solid mixed bag to get things started.
 
Photo 2/11   |   002 10 Best 5 9l Cummins Tech Stories

24-Valve Intake-Manifold Swap

 
Photo 3/11   |   003 10 Best 5 9l Cummins Tech Stories

Fuel for the Masses

 
Photo 4/11   |   004 10 Best 5 9l Cummins Tech Stories

Boost Is Best

 
Photo 5/11   |   005 10 Best 5 9l Cummins Tech Stories

Clutch Play

 
Photo 6/11   |   006 10 Best 5 9l Cummins Tech Stories

5.9L's Fatal Flaws

 
Photo 7/11   |   007 10 Best 5 9l Cummins Tech Stories

Cummins Cam Tech

 
Photo 8/11   |   008 10 Best 5 9l Cummins Tech Stories

Basic 12-Valve Performance Bolt-Ons

 
Photo 9/11   |   009 10 Best 5 9l Cummins Tech Stories

Cummins and Ram Celebrate 25 Years

 
Photo 10/11   |   010 10 Best 5 9l Cummins Tech Stories

5 Sure-Shot 5.9L Common-Rail Upgrades

 
Photo 11/11   |   011 10 Best 5 9l Cummins Tech Stories

Engine Swaps: A 6BT Works in Anything

POPULAR TRUCKS

MOST POPULAR

CLOSE X
BUYER'S GUIDE
SEE THE ALL NEW
NEWS, REVIEWS & SPECS