Do you own a Detroit Diesel Series 60 engine? It probably runs well for the most part. All three versions of this electronically-controlled engine have a favorable reputation; despite being out of production for years, the Series 60 remains a popular choice for many truck drivers.
Continue reading Detroit Diesel Series 60 Common Issues and FailuresTag: Ask The Experts
Will An EGR System Delete Cause Diesel Engine Damage? (2025)
You probably heard the stories about how much trouble EGR valves are for your diesel engine. And their history has indeed given them a bad reputation.
Continue reading Will An EGR System Delete Cause Diesel Engine Damage? (2025)5 Myths About Using Aftermarket Diesel Parts Debunked!
With so many different kinds of aftermarket diesel engine parts on the market today, there’s a ton of conflicting information about their durability, performance, and manufacturing. Some people will tell you that using aftermarket parts in your engine is dangerous and would void your engine’s warranty, while others say some aftermarket parts are even better than the OEM. So who is correct?
Continue reading 5 Myths About Using Aftermarket Diesel Parts Debunked!What are the advantages of VGTs?
It’s probably hard to believe that Variable Geometry Turbos have any advantages. They have a bad reputation as a big source of problems in the diesel world.
Continue reading What are the advantages of VGTs?Remanufactured Fuel Pumps from HHP
In the agriculture industry, we know how valuable your time is. A few hours can have a huge impact on your profits when you’re dealing with weather and input cost.
Continue reading Remanufactured Fuel Pumps from HHPWill My Camshaft Be Accepted as a Core?
If you’re looking to purchase a new camshaft for your diesel engine, you might be wondering if your old cam will be accepted as a core.
Continue reading Will My Camshaft Be Accepted as a Core?What Parts We Offer; Caterpillar, Detroit Diesel and More
At Highway and Heavy Parts, it’s our mission to take the risk out of buying diesel engine parts for our customers. So we work hard to stock parts for a large range of applications.
Continue reading What Parts We Offer; Caterpillar, Detroit Diesel and MoreWhy Is My Clutch Making Noise?
Sometimes your diesel engine emits unwanted noise. This can be frustrating, especially if you’re not sure what is the cause.
Continue reading Why Is My Clutch Making Noise?What Can Broken Valves Do To My Engine?
You’ve spent time and money upgrading your diesel engine to make it a high-performance, high-horsepower machine. You might have put on a bigger turbo, marine cam or bigger injectors.
Continue reading What Can Broken Valves Do To My Engine?What’s The Problem With My Common Rail Fuel Injector?
It can be frustrating when your common rail fuel injectors fail, and you might be left with questions.
Continue reading What’s The Problem With My Common Rail Fuel Injector?What Can Contaminated Fuel Do To My Fuel Pump?
Contaminated fuel in your diesel engine can lead to big problems, especially the finely-tuned environment of your high-pressure common rail system.
Continue reading What Can Contaminated Fuel Do To My Fuel Pump?What’s The Benefit Of Bosch Injectors?
When you’re looking for new injectors for your DD13, DD15 or DD16 diesel engine, you probably feel like you have limited options for quality parts. If you’re like most people, you head straight to the dealership to get OEM parts.
Continue reading What’s The Benefit Of Bosch Injectors?Do I Need APRs In My Engine?
You’ve probably heard a lot about anti-polish rings for pistons and how great they are for your diesel engine.
Continue reading Do I Need APRs In My Engine?How Do I Return My Cores?
Often, when you purchase a remanufactured diesel engine part, you’ll have a core charge attached to the bill. This can be frustrating, as it makes the total purchase seem more expensive.
Continue reading How Do I Return My Cores?What Makes XPI Injectors Different?
Fuel injectors have seen many changes through the years, and finding the right ones for your engine can be a chore.
Continue reading What Makes XPI Injectors Different?Evolution Of Cummins Injectors
Not every fuel injector is built the same. When you’re looking to replace the injectors on your Cummins engine, we know you want the best.
Continue reading Evolution Of Cummins InjectorsShould I Replace My Fuel Injectors?
Your fuel injectors play a critical role in the combustion process in your diesel engine. They mix air with fuel and release it into the combustion chamber as a high-pressure spray.
Continue reading Should I Replace My Fuel Injectors?What Does A Cylinder Head Do?
If you’re shopping to replace your cylinder head, we know it can seem a little daunting.
Continue reading What Does A Cylinder Head Do?How Do I Fix Injector Seating?
When you install new fuel injectors, you expect them to operate great. You spent time and money putting them in, and you need to get your engine back to work.
Continue reading How Do I Fix Injector Seating?What Are EUIs?
Fuel injectors are a vital component in your diesel engine. And it can spell trouble for the overall health of your engine when they’re not working right.
Continue reading What Are EUIs?Will Electric Vehicles Replace Diesel In The Future?
The momentum toward replacing gas-powered vehicles on the road with electric vehicles is undeniably strong, as more and more manufacturers are throwing their hats in the ring. From BMW to GM, the expansion of electric vehicles on the market is set to see a record number of commercially available 100% pure battery electric vehicles as early as 2024. However, progress has not stopped there.
Continue reading Will Electric Vehicles Replace Diesel In The Future?What Makes The Caterpillar 3512 A Great Engine?
Are you running a Caterpillar 3512 diesel engine? Ever wonder what makes it different from other diesel engines?
Continue reading What Makes The Caterpillar 3512 A Great Engine?What’s In Our Caterpillar C13 Diesel Engine Rebuild Kit?
Looking to rebuild your Caterpillar C13 diesel engine? We’ve got exactly what you need. Check out our popular inframe rebuild kit here! Highway & Heavy Parts is an industry leader in rebuild kits for any diesel engines, including Caterpillar. From the C7 to the C18, we got you covered.
Continue reading What’s In Our Caterpillar C13 Diesel Engine Rebuild Kit?Caterpillar 3406E 5Ek Piston Designs
When you’re having a problem with your diesel engine, or you’re wondering which replacement parts are right for your application, we know you’re looking for the best information.
Continue reading Caterpillar 3406E 5Ek Piston DesignsThe Evolution of Caterpillar Pistons
Here at Highway & Heavy Parts, we’re dedicated to bringing you the information you need to confidently buy diesel engine parts, expand your business, increase your profit, and successfully identify which parts will fit the job at hand.
Continue reading The Evolution of Caterpillar PistonsDiesel Oil Coolers Explained
An oil cooler is a fairly simple component, which means that it rarely fails. However, when doing any major engine work, it should be replaced. There are many reasons why a diesel engine can fail. And when it does, the oil cooler should be swapped out as well.
Guidelines for Installing a Diesel Engine Cylinder Head
Replacing your cylinder head is a big job. And you want to make sure it’s done correctly to keep your engine running at its best.
Continue reading Guidelines for Installing a Diesel Engine Cylinder HeadShould You Rebuild A Fuel Injector? Injector Repair Kits Explained
The fuel injector. It’s one of the most vital and most complicated components in your diesel engine.
Continue reading Should You Rebuild A Fuel Injector? Injector Repair Kits ExplainedHow to Rebuild a Caterpillar C2.2 T/A Diesel Engine
Is it time for your Caterpillar C2.2 T/A to get a complete rebuild? (Check out our post on signs your engine needs a rebuild if you’re not sure!)
Continue reading How to Rebuild a Caterpillar C2.2 T/A Diesel EngineWhen Should You Replace Diesel Engine Fuel Injectors?
The once lazy, black smoke-chugging, locomotive-like engines are no longer. Nowadays, diesel-powered engines are cleaner than ever, produce more power, and use less fuel. But how do you know when it is time to replace their fuel injectors?
Continue reading When Should You Replace Diesel Engine Fuel Injectors?Should You Buy A Rebuild Or Remanufactured Head For Your Diesel Engine?
Diesel engines, especially in heavy-duty machinery and trucks, have an extremely hard life. At one point or another, they will need major service, and the heads will have to be replaced.
Continue reading Should You Buy A Rebuild Or Remanufactured Head For Your Diesel Engine?Should You Get A New Or Remanufactured Natural Gas Cylinder Head?
Cylinder heads fail, and when they do, you’re left with a decision whether you should purchase a new or remanufactured cylinder head. And if you’re running a natural gas engine, you might feel like you’re making this decision more often than you’d like.
Continue reading Should You Get A New Or Remanufactured Natural Gas Cylinder Head?Aftermarket vs. OEM Diesel Parts – Why Is The OEM So Expensive?
Are you buying genuine parts for your bobcat, John Deere case from the OEM dealer. If so, are you confident they’re giving you the best price possible. Well, we got some news for you, they’re not.
Continue reading Aftermarket vs. OEM Diesel Parts – Why Is The OEM So Expensive?Why Are There Few Options For Natural Gas Cylinder Heads?
Due in part to high demand and low supply, people have had a hard time finding cylinder heads for their natural gas engines, leading them to spend money on parts they’ll just have to replace again soon.
Continue reading Why Are There Few Options For Natural Gas Cylinder Heads?Is Replacing Your Diesel Camshaft Worth It?
Your truck is often put through grueling conditions and is expected to perform while giving nothing less than 100%. But just like anything else, diesel engines will have components that will fail if not properly maintained. Common parts like filters, gaskets, and even injectors will eventually need to be swapped out. It is just a matter of time.
Continue reading Is Replacing Your Diesel Camshaft Worth It?Why Purchase Reman Diesel Fuel Pumps From HHP?
Have you ever been stuck waiting for a replacement part? Lost valuable time because the part you needed was unavailable?
Continue reading Why Purchase Reman Diesel Fuel Pumps From HHP?How Have EPA Emissions Regulations Affected Diesel Engines?
As you probably know, modern diesel engines are held to a strict set of regulations regarding their emissions.
Continue reading How Have EPA Emissions Regulations Affected Diesel Engines?Why Did Caterpillar Stop Manufacturing On-Highway Diesel Engines?
Caterpillar has a long history of producing quality diesel engines. But as you probably know, they no longer make engines for on-highway applications.
Continue reading Why Did Caterpillar Stop Manufacturing On-Highway Diesel Engines?How Often Should I Change The Oil During Engine Break-In?
Proper break-in after an engine rebuild is something we’ve noticed that our customers don’t always know about.
Continue reading How Often Should I Change The Oil During Engine Break-In?What Causes A Diesel Crankshaft To Bend? 4 Main Causes
If you have spent any time around an engine, regardless if it is diesel or gas-powered, you will have no doubt heard or even seen people talk about crankshafts. It is a simple, yet complicated moving part that helps keep the pistons and other vital engine components moving safely.
Continue reading What Causes A Diesel Crankshaft To Bend? 4 Main CausesDon’t Delete Your VGT Turbo! Standard, Wastegate, And VGT Explained
Is your VGT giving you trouble again? We know it can be frustrating when you’re looking at thousands of dollars of turbo damage yet again. And we know that it has lead many operators to pull the VGTs all together.
Continue reading Don’t Delete Your VGT Turbo! Standard, Wastegate, And VGT ExplainedWhy Is My Cummins ISLG Natural Gas Cylinder Head Cracking?
Is your cylinder head in your Cummins ISL or ISLG natural engine cracked in multiple places? Are you looking for a replacement head but cant find quality options?
Continue reading Why Is My Cummins ISLG Natural Gas Cylinder Head Cracking?How Diesel Turbochargers Work: VGT, Wastegate, and Standard Turbos
Is your VGT giving you trouble again?
Continue reading How Diesel Turbochargers Work: VGT, Wastegate, and Standard TurbosWhen Is It Time To Rebuild My Detroit Diesel DD15?
Rebuilding your engine can be a large and costly job. And we know that choosing the right kit for your engine can sometimes be difficult.
Continue reading When Is It Time To Rebuild My Detroit Diesel DD15?What’s The Difference Between A Flywheel And A Flexplate?
The terms flywheel and flex plate get interchanged a lot in the automotive industry. Although they essentially do the same job, they are not the same.
Continue reading What’s The Difference Between A Flywheel And A Flexplate?Will An EGR System Delete Cause Diesel Engine Damage?
Are you thinking of deleting your diesel engine’s EGR system or keeping it as the OEM intended? Wondering if you will get better performance or if it will harm your engine in the long run?
Continue reading Will An EGR System Delete Cause Diesel Engine Damage?What Is The Difference Between Refurbished, Rebuilt, And Remanufactured Engines?
Believe it or not, there is a difference between refurbished, rebuilt, and remanufactured parts when talking about diesel truck engines.
Continue reading What Is The Difference Between Refurbished, Rebuilt, And Remanufactured Engines?What’s The Difference Between Caterpillar 3406E, C15, And C15 ACERT Diesel Engines?
Choosing the best diesel engine is no easy task, especially in the information era where forums and sites write about how good “this” engine is, and how poor its competitors are. There is no question that the Caterpillar 3406E, C15, or C15 ACERT are all good engines in their own right, but, like with anything, each one has an Achilles heel if you dig deep enough.
Continue reading What’s The Difference Between Caterpillar 3406E, C15, And C15 ACERT Diesel Engines?Why Is My Caterpillar C15 Head Gasket Failing? Common Causes and Solutions
So, we’ve talked about various components of your Caterpillar C15 diesel engine and how you can tell if they’re causing your engine trouble. Now, we’re going to take a look at head gasket failure within a C15.
Continue reading Why Is My Caterpillar C15 Head Gasket Failing? Common Causes and SolutionsWhat are the Benefits of VGT Turbos? Features & How They Function
There are some great benefits to using a VGT turbocharger in your diesel engine that you might be unaware of. With all of the turbocharger options out there, why pay more for a variable geometry turbo?
Continue reading What are the Benefits of VGT Turbos? Features & How They FunctionWhy Is My Diesel Engine Air Brake Compressor Leaking?
These checks and tests are meant to be a quick and simple way to test a diesel brake air compressor and determine its functionality. There are always exceptions and rare occurrences, but these should be able to diagnose most leaking oil/coolant issues.
Continue reading Why Is My Diesel Engine Air Brake Compressor Leaking?The 3 Steps of the Camshaft Reconditioning Process
There are a few parts that you see as many (or more) remanufactured options for as new. Diesel camshafts are one of these parts. That’s because camshafts are pretty easy to rebuild, and if done correctly, work just as well. If you are considering replacing your old cam, you should definitely consider going with a remanufactured camshaft.
Continue reading The 3 Steps of the Camshaft Reconditioning ProcessWhat are Supply and Dosing Modules? A Guide to Bosch Denoxtronic Systems
At Highway & Heavy Parts, we do parts differently! We won’t sell you just any part. We won’t just sell you the lowest price part. And we certainly won’t sell you a part from an inferior supplier.
Continue reading What are Supply and Dosing Modules? A Guide to Bosch Denoxtronic SystemsWhy Did My Diesel Cummins ISX Camshaft Fail?
Are you hearing a sudden engine knock? Is your engine running rough?
Continue reading Why Did My Diesel Cummins ISX Camshaft Fail?What Are The Primary Differences Between Cummins Diesel ISX and N14?
Cummins has a history of producing strong, long-lasting diesel engines, including some of the most popular ones for on-highway applications. Two of their engines in particular, the N14 and the ISX, continue to remain popular diesel choices.
Continue reading What Are The Primary Differences Between Cummins Diesel ISX and N14?Why Did My VGT Turbo Fail? 3 Common Symptoms
Has your turbo failed? Are you looking at a very expensive repair?
Continue reading Why Did My VGT Turbo Fail? 3 Common SymptomsWhat’s The Difference Between Detroit Diesel Series 60 12.7L and 14L Engines?
If you’ve heard of Detroit Diesel, odds are you’ve heard of their Series 60 line of engines. It includes three different engines, a 11.1L, a 12.7L, and a 14L.
Continue reading What’s The Difference Between Detroit Diesel Series 60 12.7L and 14L Engines?How Does a Cylinder Head Work On A Diesel Engine?
Today we’re going to go over a little bit about cylinder heads. Before diving head first into the cylinder head market, its important to have an understanding of what you’re working with.
Continue reading How Does a Cylinder Head Work On A Diesel Engine?What Caused A Crack In My Diesel Engine Cylinder Head?
We know how frustrating it can be when your cylinder head cracks. You’re losing coolant, have compression in your cooling system, or seeing excessive smoke, and you’re looking at lost time and money and an expensive repair.
Continue reading What Caused A Crack In My Diesel Engine Cylinder Head?When Can I Reuse My Cylinder Head Bolts? How To Clean And Inspect
Head bolts might seem like a minor or unimportant part, but without them, combustion wouldn’t be possible and your diesel engine wouldn’t work. They hold your cylinder head to the engine block and help the head gasket to seal properly.
Continue reading When Can I Reuse My Cylinder Head Bolts? How To Clean And InspectWhen Does Your Cummins N14 Need A Rebuild?
We know that rebuilding your engine is a time consuming and expensive process. And that’s not even mentioning the profits you lose when your engine is out of commission.
Continue reading When Does Your Cummins N14 Need A Rebuild?Actuator Not Moving? Engine Losing Power? Common VGT Turbo Questions
Today, we’re taking a look at some of your questions from YouTube relating to issues with your Variable Geometry Turbochargers.
Continue reading Actuator Not Moving? Engine Losing Power? Common VGT Turbo Questions






