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How to Diagnose Diesel Engine Belt Noise

Diesel engine belt noise is one of the most common drivability complaints on heavy-duty trucks and equipment.

The noise may sound like:

  • A squeal
  • A chirp
  • A screech
  • A grinding or growling sound

However, the belt itself is not always the actual problem. In many cases, the noise is caused by:

  • Improper belt tension
  • Pulley misalignment
  • Worn bearings
  • Oil contamination
  • Failing accessory components

Accurately diagnosing diesel engine belt noise is important because replacing only the belt may not solve the root issue.

Continue reading How to Diagnose Diesel Engine Belt Noise
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Why Clean Oil Matters More Than You Think (And How It Protects Your Diesel Engine)

If you’ve already invested in diesel engine parts, you already understand how critical performance and reliability are.

But there’s one system that impacts everything else, and it’s often overlooked:

Your lubrication system.

Clean oil is not just about maintenance. It directly affects how long your components last and how efficiently your engine operates.

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Diesel Engine Common Rail Injection Explained

We’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.

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Keep Your Vessel Running Strong with Marine Diesel Parts from Highway and Heavy Parts

Most 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.

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Mack Engine Serial Numbers

Mack 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.

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Yanmar Engine Serial Numbers

Originally 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.

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Perkins Engine Serial Numbers

Founded 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.

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Why Your Diesel Parts Supplier Matters More Than You Think

In diesel repair, most people focus on one thing:

Getting the part.

But here’s what actually determines whether a repair succeeds or fails:

  • Was it the right part?
  • Did it arrive on time?
  • Was the root cause identified before installing it?

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
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Problems That Require Cylinder Head Components for the CAT C15 ACERT Diesel Engine

You may not realize it, but there are a lot of components that make up the cylinder head of your C15 ACERT. If you have a failure in that part of your engine, you might be inclined to blame it on your cylinder head, but it’s possible that one of these other components could break. This would lead to problems with similar symptoms to that of a failing cylinder head.

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What to Know Before Buying Connecting Rod Bearings

Connecting rod bearings are one of the smallest components inside a diesel engine, but they play a massive role in long-term engine reliability.

Improper bearing selection, incorrect oil clearance, installation mistakes, or inaccurate measurements can quickly lead to oil pressure loss, crankshaft damage, metal contamination, bearing failure, and catastrophic engine damage.

That is why connecting rod bearing selection should never involve guesswork.

Proper bearing fitment depends heavily on crankshaft journal measurements, housing bore condition, oil clearance verification, engine application, and the condition of the surrounding rotating assembly components.

Quick Takeaway:
Connecting rod bearings must match the exact crankshaft journal size, oil clearance requirements, and engine application. Assuming “standard” always fits can lead to serious engine damage.
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Best Apps for Truck Drivers in 2026 (Navigation, Fuel, Weather & More)

Modern trucking depends on more than just the truck itself.

Mobile applications now play a critical role in:

  • Route planning
  • Fuel cost management
  • Compliance and documentation
  • Weather awareness
  • Load sourcing

👉 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.

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Most Popular Diesel Engine Parts of 2026

These are some of the most in-demand diesel engine components in 2026.

Each product below is selected based on:

  • High application demand
  • Proven reliability
  • Common rebuild and repair needs
Continue reading Most Popular Diesel Engine Parts of 2026