Highway and Heavy Parts is excited to introduce our new diesel engine parts bundle sales promotion. It includes diesel cylinder heads and diesel engine add-ons for all major heavy-duty truck and equipment manufacturers. If you need a cylinder head for your Cummins, Caterpillar, Detroit Diesel, or other heavy-duty diesel engine, you can get everything you need to do the job right and save some money.
Continue reading Diesel Cylinder Head and Engine Rebuild Kit Bundle Sale
The U.S. trucking industry is firmly in the spotlight again in 2026—this time for the ongoing shortage of qualified drivers. While much of the conversation focuses on hiring, pay, and working conditions, the driver shortage has direct ripple effects on fleet operations, maintenance schedules, and demand for reliable replacement parts.
When trucks are pushed harder and maintenance windows shrink, the health of your diesel engine becomes even more important.
Industry research estimates a gap of 60,000 drivers in 2024, with the shortage expected to climb toward 80,000+ drivers by 2026. Whether you run a small operation or a large fleet, fewer available drivers means more pressure to maximize uptime and reduce unplanned repairs.
Several Underlying Causes Include:
The shortage doesn’t just affect staffing – it directly affects how fleets run their equipment:
While the driver shortage poses real challenges, there are promising steps being taken across the industry to attract and retain qualified drivers – and to support the fleets that depend on them.
At Highway and Heavy Parts, we understand how the driver shortage changes the demands on your equipment. That’s why we focus on:
Guaranteed for fit and function, HHP parts have the right combination of quality and price with total support from our on-staff ASE-certified technicians. With specialized knowledge, quality products, fast shipping, and unbeatable customer service, HHP has you covered.
Call 844-304-7688 or visit highwayandheavyparts.com to place your order today.
From diagnosis through delivery, we’re Highway and Heavy Parts.
If you spend any time around diesel engines, you’ll notice something quickly:
👉 Almost all of them are turbocharged.
That’s not by accident.
While both turbochargers and superchargers are designed to increase air pressure into the engine, diesel engines overwhelmingly rely on turbochargers – and there are specific engineering reasons why.
Continue reading Why Diesel Engines Use Turbochargers Instead of SuperchargersEGR pressure ports are small, but they play a critical role in how a diesel engine manages emissions and airflow.
When they clog, it can lead to:
Cleaning them correctly matters just as much as diagnosing the issue.
Continue reading How to Clean EGR Pressure Ports in Diesel Engines (Without Causing Damage)
The turbocharger on a Detroit Diesel Series 60 14L engine does more than add power.
It controls airflow, and airflow controls combustion.
When the turbo isn’t performing correctly, the entire engine starts to fall out of balance.
Continue reading Detroit Diesel Series 60 14L Turbocharger: Symptoms, Failure Causes, and When to Replace
Cylinder head bolts don’t usually get the attention.
But on a Caterpillar C15, C15 ACERT, or 3406E, they play a critical role in engine performance and reliability.
They’re not just fasteners.
They are what keep combustion sealed.
Continue reading Caterpillar C15, C15 ACERT, 3406E Cylinder Head Bolts: Why They Matter More Than You Think
Low oil pressure isn’t something you ignore on a diesel engine.
On a Caterpillar C15 or 3406E, it’s often a warning sign that something deeper is going wrong inside the engine.
And in many cases, the issue starts with the oil pump.
Continue reading Caterpillar C15 and 3406E Oil Pump: Symptoms, Failure Causes, and When to ReplaceTwo piston rings can look identical.
They can share the same OEM part number, measure the same dimensionally, and appear interchangeable during installation.
But one may have the correct radial tension for the application, while the other may not.
That difference is impossible to see by eye. You cannot feel it by hand. You cannot check it with a standard caliper or micrometer.
Yet ring tension can determine whether a rebuilt diesel engine seals properly, breaks in correctly, controls oil, and avoids excessive blow-by.
That is why Episode 4 of the Black Series Lab focuses on one of the most overlooked specifications in engine rebuilding: piston ring tension.
When a Caterpillar engine starts losing power, producing excessive smoke, struggling with recurring DPF issues, or experiencing turbocharger problems, the turbocharger is often the first component blamed.
Sometimes the turbocharger is the problem. But many times, it is simply the victim.
What many technicians and equipment owners don’t realize is that fuel injectors and turbochargers work together as part of the same combustion process. When injector performance begins to decline, the effects can spread throughout the entire engine, eventually impacting the turbocharger, aftertreatment system, fuel economy, and overall performance.
Before replacing another turbocharger, it may be worth taking a closer look at the fuel system.
Diesel engines are built to run – not sit.
At Highway and Heavy Parts, we regularly work with engines that come out of storage with unexpected performance issues. In many cases, the root cause isn’t a failed part: it’s what happened while the engine wasn’t running.
Whether it’s a backup truck, seasonal equipment, or a unit waiting on work, extended downtime can quietly create problems that don’t show up until the engine is put back into service.
And in many cases, those problems get misdiagnosed.
From fuel degradation to DEF crystallization and internal wear, here’s exactly what happens when a diesel engine sits too long – and what to look for before putting it back to work.
Continue reading What Happens When a Diesel Engine Sits Too Long? (Fuel, DEF, and Internal Damage Explained)
Remanufactured diesel engine parts offer a practical alternative to new OEM components. To understand their value, you first need to understand what “remanufactured” really means.
Continue reading The Real Benefits of Remanufactured Diesel Engine PartsIf your diesel engine is running rough, smoking, or losing power, a failing fuel injector could be the cause.
One of the first questions most people ask is: How much does it cost to replace a diesel fuel injector?
The answer depends on your engine, injector type, and how far the issue has progressed. Some injector problems are caught early. Others turn into much larger repairs.
Let’s break down what actually impacts the cost – and what you can expect in 2026.
Continue reading What Does It Cost to Replace a Diesel Fuel Injector in 2026?
