The next time you see a semi truck rumbling down the highway, pay attention to the vertical exhaust stacks rising up from behind the cab. These exhaust pipes aren't just for aesthetic purposes: These ...

We're all interested in getting more power and mileage from our sport trucks. The question is how to get it. Two of the most popular bolt-on performance parts are free-flowing intake and exhaust ...

Diesel Exhaust Fluid (DEF) is a crucial component in modern diesel vehicles, introduced to comply with US Environmental Protection Agency (EPA) regulations that began in 2010. It's a solution made up ...

Increasingly stringent diesel engine exhaust emissions regulations have, over the past 20 years, reduced output of nitrogen oxides (NOx) by 95% and particulate emissions by 90% in heavy trucks. These ...

TRP Aftermarket Parts offers a new line of commercial vehicle exhaust parts including mufflers, pipes and clamps "for different configurations and different budgets." They’re available from Kenworth ...

Diesel exhaust fluid (DEF) is nothing new. GM’s Duramax-powered Chevrolet Silverado and GMC Sierra 2500HD and 3500HD pickups have had used the stuff since 2011. So has Ford’s F-Series Super Duty.