The Caterpillar 3406B and 3406C are known for durability.
But like any diesel engine, they don’t last forever without internal wear.
Over time, compression drops, oil consumption increases, and performance starts to decline.
When that happens, a complete solution like a Caterpillar 3406B, 3406C engine rebuild kit becomes necessary.
Continue reading Caterpillar 3406B, 3406C Engine Rebuild Kit: What It Fixes and Why It Matters
The cylinder head on a Caterpillar C15, C15 ACERT, or 3406E is one of the most critical components in the engine.
It controls:
When the cylinder head starts to fail, it doesn’t stay contained. It affects the entire engine.
Continue reading Caterpillar C15, C15 ACERT, and 3406E Cylinder Head: Failure Symptoms, Causes, and When to Replace
If your Caterpillar C12 is losing power, burning oil, or showing signs of internal wear, you may be getting close to a rebuild.
And when that time comes, an inframe rebuild kit is one of the most efficient ways to restore engine performance without removing the entire engine.
But knowing when to rebuild – and what’s actually included – makes all the difference.
Continue reading Caterpillar C12 Inframe Rebuild Kit: What It Includes, When You Need It, and How It Restores Performance
The exhaust manifold on a Caterpillar C15 ACERT does more than route exhaust gases.
It directly affects:
If the manifold is leaking, cracked, or restricting flow, the entire engine suffers.
And in ACERT engines, those problems show up fast.
Continue reading Caterpillar C15 ACERT Exhaust Manifold: Performance, Failure Symptoms, and Upgrade Benefits
On a Caterpillar C15 or 3406E, the turbocharger isn’t just about power – it’s about air control, combustion efficiency, and engine balance.
When the turbo is working correctly, you get:
When it starts to fail, everything changes – and it usually shows up under load first.
Continue reading Caterpillar C15, 3406E Turbocharger (177148): Boost, Failure, and What Happens When It Goes Bad
If your Caterpillar C15 ACERT is running rough, smoking more than usual, or losing power under load, there’s a good chance the issue is in the fuel system.
More specifically – the fuel injectors.
And when an injector like the 10R1273 starts to fail, it doesn’t just affect performance. It can impact combustion, fuel economy, and long-term engine health.
Continue reading Caterpillar C15 ACERT Fuel Injector (10R1273): Symptoms, Failure Causes, and Replacement Guide
The Caterpillar 3406E is known for durability – but when it starts to go, it usually doesn’t fail all at once.
It starts small.
A little blow-by.
A little oil consumption.
Maybe a slight drop in power under load.
Then it builds.
And before long, you’re not looking at a repair anymore – you’re looking at a full engine rebuild.
Continue reading Caterpillar 3406E Engine Rebuild Kit: What Actually Fails and What You Need to Fix It Right
If your Caterpillar 3406E is losing power, popping through the intake, or backfiring through the exhaust, the problem may not be fuel-related at all. In many cases, those symptoms point back to camshaft or valve train wear. When those components start to fail, performance can drop quickly, and if the issue is ignored, it can lead to more extensive engine damage and a much more expensive repair.
This article breaks down what the camshaft does, common signs of failure, why proper installation matters, and what to keep in mind when replacing a 3406E camshaft. If you are already looking for replacement parts, you can start by reviewing our Caterpillar 3406E Camshaft here.
Continue reading Caterpillar 3406E Camshaft: Symptoms, Failure Causes, and Replacement Guide
If your Caterpillar C15 or 3406E isn’t running like it used to – losing power, misfiring, or making unusual noise – the problem might not be what you think.
It could be your camshaft.
And if that’s the case, waiting too long can turn a manageable repair into a full engine rebuild.
Continue reading Caterpillar C15, 3406E Camshaft: Symptoms, Failure Causes, and Replacement Guide
If your Caterpillar C12 is losing power, running rough, or showing signs of valve train issues, the camshaft may be part of the problem. A worn camshaft can affect valve timing, engine efficiency, fuel economy, and overall performance. Left too long, what starts as a drivability issue can turn into a much larger repair.
Because the camshaft plays such a major role in how the engine breathes and performs, wear in this area should never be ignored. If you are already narrowing down the repair, our Caterpillar C12 Camshaft is a good place to start, and you can also browse more Caterpillar Engine Parts if the repair involves other related components.
Continue reading Caterpillar C12 Camshaft Problems, Symptoms, and ReplacementHighway and Heavy Parts is your trusted source for over 250,000 replacement diesel engine parts, including a comprehensive selection of Caterpillar engine components. Whether you’re maintaining fleet vehicles or heavy equipment, we carry the parts you need to keep your Caterpillar engines running at peak performance. This, combined with our ASE Certified service team, makes us industry experts and qualified to write about everything Caterpillar-related.
On this page, you will find blogs that discuss common Caterpillar issues, diesel engine part highlights, and how-tos.
Engine Components & Service Parts
Our extensive Caterpillar inventory includes essential engine components such as engine blocks, pistons, fuel injectors, and turbochargers. From routine maintenance items to major engine rebuild components, we stock everything required for C15, C15 ACERT, 3406E, and other popular Caterpillar engine models.
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At Highway and Heavy Parts, you’ll get parts that have been manufactured in an ISO 9001:2015 certified facility, ensuring quality and consistency for your Caterpillar equipment. Our commitment to quality ensures you receive parts engineered for durability and long-lasting performance.
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Order by 2PM EST, and in-stock items will ship the same day (M–F), ensuring minimal downtime for your equipment.
We understand the importance of keeping your fleet operational and ready for work.
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We know the importance of keeping a delivery fleet on the road. Our team combines decades of experience with comprehensive product knowledge to help you find the right parts for your specific application.
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You can quickly and easily find the precise part you need with our large range, saving you time and effort. From gaskets and seals to major engine components, our inventory covers the full spectrum of Caterpillar parts needs.
While Caterpillar has a long and storied history of producing top-notch diesel engines and was known for construction and mining equipment, they also produced engines for on-highway applications. Though Caterpillar has discontinued their truck engine production, existing equipment still requires quality replacement parts and ongoing maintenance support.
Browse our complete selection of Caterpillar parts today and experience the Highway and Heavy Parts difference – where quality meets reliability for all your heavy-duty diesel engine needs.
