Detroit recently unveiled its new Gen 6 heavy-duty engine lineup, including the:
with production beginning in January 2027 for the DD13 and DD15, followed by the DD16 in January 2028.
Vehicle emissions regulations did not happen all at once.
They developed over decades as engineers, regulators, and manufacturers responded to air quality problems caused by hydrocarbons, carbon monoxide, nitrogen oxides, particulate matter, and later greenhouse gas emissions.
For diesel engines, the biggest changes came when regulations began focusing more heavily on particulate matter, NOx, fuel sulfur levels, and aftertreatment systems.
Continue reading History of Vehicle Emissions Regulations: From Smog Controls to Modern Diesel StandardsHere at Highway & Heavy Parts, we sell a lot of turbochargers. We carry a number of the industry’s leading brands for all major OEMs, and have helped diagnose a lot of our customers’ turbo failures. We provide solutions to help get them back on the road.
Continue reading Highway & Heavy Parts Answers Your Diesel Engine Questions: TurbochargersAt HHP, we feel that our team of expert sales people is one of the things that really sets us apart from our competitors.
Continue reading Meet the Experts at HHP: Braeden GosmaAt Highway and Heavy Parts, we’re always working to improve how we support diesel repair shops and equipment owners. While our commitment to quality parts, fast shipping, and real technical support hasn’t changed, we’ve added new tools, products, and ways to stay connected.
Continue reading What’s New at Highway and Heavy PartsWe spend a lot of time talking about diesel engine parts – but today, we want to shift the focus to something just as important: the people behind it all.
If you’ve ever called in, asked a question, or needed help finding the right part, chances are you’ve already experienced what makes our team different. This is your chance to get to know one of those people a little better.
Continue reading Meet the Experts at HHP: Andy ThompsonModern trucking depends on more than just the truck itself.
Mobile applications now play a critical role in:
👉 The right trucking apps help reduce downtime, improve efficiency, and support safer decision-making on the road.
Below is a breakdown of widely used trucking apps in 2026, organized by function.
Continue reading Best Apps for Truck Drivers in 2026 (Navigation, Fuel, Weather & More)These are some of the most in-demand diesel engine components in 2026.
Each product below is selected based on:
Most diesel technicians assume a brand-new cylinder liner comes out of the box perfectly round and ready to install.
However, advanced dimensional analysis shows that even new production liners contain small amounts of geometric variation throughout the liner surface.
While these variations are often microscopic, they can still influence:
That is exactly what Highway and Heavy Parts explores in Black Series Lab– Episode 1. In this episode, we examine:
Most engine rebuild conversations focus on the parts everyone can see.
Pistons. Rings. Bearings. Cylinder heads. Gaskets. Liners.
But one of the most important surfaces in the entire engine is almost invisible once the rebuild is complete.
The cylinder liner crosshatch.
That microscopic pattern machined into the cylinder wall plays a major role in oil retention, piston ring seating, compression control, blow-by prevention, and long-term engine durability.
In Black Series Lab Episode 3, we look closer at that surface and explain why the liner wall is not just a smooth bore. It is an engineered sealing surface.
Being a diesel mechanic is not an easy career – but that is also part of what attracts many people to it.
Modern diesel technicians are expected to understand:
At the same time, the work can be physically demanding and fast-paced.
However, for many technicians, the challenge is also what makes the career rewarding.
Continue reading Is It Hard to Be a Diesel Mechanic?If you’re thinking about becoming a diesel mechanic, you’ve probably asked one of the most common questions in the industry: Do I need to go to school, or can I learn on the job?
The short answer is: Both paths can lead to a successful career.
Some diesel technicians attend a trade school before ever stepping into a shop. Others start changing oil, performing preventive maintenance (PMs), mounting tires, or cleaning the shop and work their way into full technician positions.
Neither path is automatically better than the other.
What matters most is building technical knowledge, gaining hands-on experience, and continuously learning throughout your career.
