About the Cat C15/C15 ACERT/3406E Stage 4 Performance Diesel Engine Cylinder Head

If you've spent the time and money upgrading components on your Caterpillar diesel engine, you're going to want a cylinder head that can handle the increase in horsepower. 

That's where our Stage 4 Performance Cylinder Head comes in. This is going to be the ultimate cylinder head when it comes to options for your Caterpillar 3406E, C15, or C15 ACERT. 

As you probably know, we've talked about the other cylinder heads for these applications, including our standard cylinder head, and our Stage 2 and 3 heads. So what makes the Stage 4 Performance Series head so great? Today we're taking you through the benefits of this top-performing head.

Looking for more information? You can also check out our videos on this cylinder head:




If you're looking for the best head for your diesel engine, we can help! Our ASE Certified Technicians are here to help you get the parts you need.

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About the Stage 4 Performance Cylinder Head


cat stage 4 cylinder head | Highway & Heavy Parts


As we mentioned, this head is the ultimate head you can get for your Caterpillar 3406E, C15, or C15 ACERT. This head can handle the extra horsepower you get from any upgraded components. 

Like the Stage 3 Performance Cylinder head, this head features all upgraded valves throughout, both the intake and exhaust. These valves are going to be made out of inconel material, meaning they can handle higher temperature and pressure than the standard valve. 

Inconel material is most commonly used in racing, super-charged, turbo-charged, and boosted applications. If you push a standard valve beyond its temperature and pressure capabilities, you can end up with something called chordal fracture. The valves are typically upgraded in performance series engines to prevent this from happening. Inconel material in the valves results in a stronger, longer-lasting cylinder head. 

Beyond the valves, though, this head also features fire rings. the deck has been machined for fire rings around each cylinder. They cut a groove and insert a stainless steel ring that is going to prevent head gasket blow-outs. So, when you're running the ultimate pressure and big horsepower, this is the head that's going to keep your engine together. It's got the stuff to last. 

This cylinder head is built off the strong foundation that you know and love. It's going to give you higher coolant flow, higher nicker content, and an improved casting. In other words, this head can take what you throw at it. 

Do you think you're having problems with the head on your C15 ACERT? Check out our post on common C15 ACERT cylinder head problems


Benefits of the Stage 4 Performance Cylinder Head

This cylinder head is built for your 3406 E / C15 / C15 ACERT engine applications. It features new inconel intake and exhaust valves, which are stronger and more durable than stainless steel. 

It's designed for higher horsepower engines, as it maintains structural integrity under high pressure and stress. It also resists corrosion, oxidation, pitting, and cracking. 


cat stage 4 head fire rings | Highway & Heavy Parts


As we talked about earlier, what sets this head apart from the other Performance Series cylinder heads is that it comes installed with stainless steel fire rings machined into the deck. This can prevent head gasket blow-outs.

Beyond that, this head comes with new valve springs, new spring retainers, and new valve keepers. You're also going to get your cam bearings pre-installed. 

Crafted with higher nickel content for increased strength and durability and built to OEM specifications, this head is ready for your high-horsepower engine. And it's assembled in the USA!

You can save up to 50% off the OEM pricing and it comes with a 1-year parts warranty. This head might be the best option for your CAT 3406E, C15, or C15 ACERT.


If you need diesel engine parts, we're here for you! Give our ASE Certified Technicians a call at 844-304-7688, or request a quote online!