About the Cat C15/C15 ACERT/3406E Stage 2 Performance Diesel Engine Cylinder Head

Are you putting an engine together? Maybe you're looking for an added sense of security when it comes to your cylinder head. Or maybe you've got a bigger turbo, larger injectors, or upgraded horsepower. 

You're probably familiar with our cylinder heads for the Caterpillar 3406E, C15, and C15 ACERT diesel engine. We've talked about them in the past, and they've been very popular through the years. (Take a look at our post on this cylinder head!) But now we're going to talk about the Stage 2 cylinder head for your Caterpillar engine. 

If you're looking for security, this cylinder head delivers. Let us introduce you to the performance line of cylinder heads that Highway & Heavy Parts offers. 

Take a closer look by watching our videos:




Do you need a new cylinder head for your diesel engine? Our ASE Certified Technicians are ready to help you find the right fit for your application!

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Let's Talk About the Stage 2 Cylinder Head


cylinder head for cat stages | Highway & Heavy Parts


Okay, so what is this cylinder head all about? Do you really need it in your engine for better performance?

The main difference between this cylinder head and the standard cylinder head for the C15/C15 ACERT/3406E is that the exhaust valves have been upgraded to inconel material. This material is going allow the exhaust valves to handle more temperature and more pressure than the standard exhaust valve. 

Inconel material is most commonly used in racing, turbo-charged, super-charged, and boosted applications. It builds off a strong foundation and allows for increased coolant flow in the castings. 

It has a higher nickel content and is going to be much improved over the original casting. 

When a standard valve is pushed beyond its capability, in regards to both temperature and pressure, it results in what is known as a chordal fracture. This is why the valves are upgraded in the performance series heads. The Stage 2, 3, and 4 heads will use this inconel material in the valves. This results in a stronger, more robust, longer-lasting cylinder head. That's where you're going to get the upgrade with this one. Our Stage 2 cylinder head is built to last on your Caterpillar engine.

Do you know what a cylinder head does for your diesel engine? Check out our post to learn more about the purpose of a cylinder head.

The Benefits of the Stage 2 Performance Cylinder Head


cat cylinder head stage 2 | Highway & Heavy Parts


If you're still on the fence about this cylinder head, let us take you through some of the other great benefits it brings to the table. 

As we mentioned, it's upgraded with inconel exhaust valves and is stronger and more durable than stainless steel. It tolerates extreme heat and resists corrosion, oxidation, pitting, and cracking and is designed for higher horsepower applications. 


cylinder head for cat resists corrosion | Highway & Heavy Parts


This head is crafted with a higher nickel content, which brings you added strength and durability. It also comes with the cam bearings pre-installed. 

The components on this head are also new. This includes new valve springs, spring retainers, and valve keepers. 

It has wider fluid passages and a thicker deck for enhanced coolant flow. 

If you're looking for balanced, long-lasting power check out this diesel engine cylinder head. With a 1-year unlimited mile warranty and up to 50% off the OEM prices, this head could be just what your CAT C15/C15 ACERT/3406E needs.


Do you find yourself in need of diesel engine replacement parts? We have ASE Certified Technicians on staff who can help you find the parts you need! Give us a call at 844-304-7688, or request a quote online!