We 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 ThompsonPicking the right diesel engine model is no easy task. If you’re considering purchasing a Caterpillar 3406E, C15, or C15 ACERT, we have the information to help you make a decision.
Continue reading The Primary Differences Between Caterpillar 3406E, C15, and C15 Acert Diesel EnginesIn diesel engines, small diesel engine problems don’t stay small.
A slight drop in oil pressure. A little smoke at startup. A minor coolant leak. An injector that’s “just a little off.”
These are easy to ignore, especially when the truck is still running.
But in heavy-duty diesel engines, those early warning signs are not minor inconveniences.
They are the beginning of a much bigger failure.
Continue reading The Real Cost of Waiting Too Long to Fix a Small Diesel Engine IssueOlder Cummins engines – especially Big Cam and NTC/N14-era platforms – used two different cooling system designs:
These systems are not just minor variations.
👉 They are fundamentally different in how coolant moves through the engine.
And that matters when you’re trying to solve overheating – or considering a conversion.
Continue reading Converting a Cummins Low-Flow Cooling System to High-Flow: What It Actually TakesIf you want to prepare your diesel truck for winter, it starts with understanding how cold temperatures affect your engine, fuel system, and overall performance.
Cold weather introduces challenges that diesel engines are particularly sensitive to, including fuel gelling, reduced battery performance, and increased wear during startup.
Preparing ahead of time helps prevent breakdowns, hard starts, and costly repairs.
Continue reading How to Prepare Your Diesel Truck for Winter (Cold Weather Guide)Recently, at Highway & Heavy Parts, we’ve expanded our product offering to our customers. We now offer more fuel system components for all major OEMs.
Continue reading Highway & Heavy Parts Answers Your Diesel Engine Questions: Fuel SystemsWe’ve talked a lot about issues you might experience with your diesel engine common rail injectors. But it’s not all about the problems! You also get a lot of benefits for having this kind of fuel injection system in your diesel engine.
Continue reading Diesel Engine Common Rail Injection ExplainedMost people know Highway and Heavy Parts for our over-the-road diesel expertise — but what many customers don’t realize is that we also supply a full line of marine-rated diesel engine parts for commercial vessels, charter fleets, fishing boats, and recreational boats across the country.
From Caterpillar Marine to Cummins Marine, Detroit Diesel Marine, John Deere Marine, and more, we carry high-quality replacement parts engineered to survive the extreme demands of marine environments: saltwater exposure, constant load, high heat, and long duty cycles.
Whether you’re keeping a single vessel on the water or maintaining an entire fleet, Highway and Heavy Parts has the reliable components you need – backed by expert support, fast shipping, and OEM-level performance.
And below, you’ll find direct links to our most popular marine-specific parts currently available.
Continue reading Keep Your Vessel Running Strong with Marine Diesel Parts from Highway and Heavy PartsMack engines have long meant durability and strength just look at their bulldog mascot. They were founded in 1900, originally as the Mack Brothers Company. They are now owned by Volvo, but through their long history they’ve produced engines that remain popular with many operators.
Continue reading Mack Engine Serial NumbersOriginally founded in Japan in 1912, Yanmar is now a global company, spanning across Europe and America. They began by producing gasoline engines, but the company now specializes in diesel engines, with a particular focus on marine applications.
Continue reading Yanmar Engine Serial NumbersFounded in the early 20th century, Perkins has long produced diesel engines for various industries. They sought to change diesel engines from a slow-moving working engine to a high-speed, high-performance workhorse. They succeeded. At first they produced engines for agricultural applications, but their engines can be found in marine equipment, industrial, construction, and more.
Continue reading Perkins Engine Serial NumbersIn diesel repair, most people focus on one thing:
Getting the part.
But here’s what actually determines whether a repair succeeds or fails:
Because the truth is:
A great part doesn’t fix the problem if the process around it is broken.
That’s where your diesel parts supplier becomes more than just a vendor. They become part of your diagnostic process.
Continue reading Why Your Diesel Parts Supplier Matters More Than You Think
