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Why Did Caterpillar Stop Making Diesel Truck Engines?

red Peterbilt truck

Caterpillar has a long and storied history of producing top-notch diesel engines. Caterpillar has a reputation for its construction and mining equipment, but they used to make engines for on-highway applications. You might be curious: Does Caterpillar still make truck engines? Despite previously making engines for on-highway applications, these engines have been discontinued.

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Detroit Diesel Series 60 Common Issues and Failures

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.

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Cummins Diesel Engine Serial Numbers

Look at your rocker cover: you’ll probably find your Cummins ISB engine serial number. You might also find it on the side of the gear housing. If you have a Cummins ISM engine, the serial number is on the rocker housing on the fuel pump side.

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Diesel Cylinder Head and Engine Rebuild Kit Bundle Sale

Cylinder Head and Rebuild Kit Bundle

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.

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What Does It Cost to Replace a Diesel Fuel Injector in 2026?

If 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.

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About Diesel Injector Trim Codes

Your fuel injectors are what keep your diesel engine running at its best. If you want solid diesel engine performance, then you need to use your injectors effectively. There’s a specific system your injector uses to improve engine performance: trim codes. 

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The Pros and Cons of an EGR System Delete

When you start looking into the pros and cons of EGR deletes, it’s easy to see why EGR valves on diesel engines have such a poor reputation. You’ve probably heard plenty of stories about the trouble they cause for drivers and shop owners alike.

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When to Replace Fuel Injectors in a Caterpillar C15 Acert

Is your fuel efficiency down? Has the performance of your CAT C15 ACERT dropped?

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Dinex NOx Sensors: Smarter, Faster, Stronger!!

When it comes to maintaining the health and efficiency of your diesel engine’s aftertreatment system, having a reliable NOx sensor is essential. Dinex, a trusted name in the industry, offers a range of NOx sensors designed to keep your engine running smoothly and within emission standards. Whether you’re working with Cummins, Detroit Diesel, Freightliner, International/Navistar, Kenworth, Paccar, Peterbilt, or Volvo engines, Dinex has you covered with their second-generation NOx sensors.

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Important Differences Between Caterpillar 3406E, C15, and C15 Acert Diesel Engines

How do you pick the right diesel engine model? This is a challenging task. You’ll need plenty of information if you’re deciding between the Caterpillar 3406E, C15 ACERT, or C15 engine. And we have as much information as you can get to make an informed decision.

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