Imagine your powerful 6.7 Cummins engine, purring like a kitten, ready to tackle any task. But what happens when that heart of your truck starts to falter, and you suspect the cylinder head is the culprit? It’s a common worry for Cummins owners, and for good reason. A failing cylinder head can lead to big problems, from lost power to expensive repairs.
Choosing the right replacement cylinder head for your 6.7 Cummins can feel like navigating a maze. There are so many brands and types, and it’s tough to know which one is best for your truck and your wallet. You want something reliable, something that will make your engine run strong again, but without breaking the bank. This confusion can leave you feeling frustrated and unsure.
Don’t worry! In this post, we’re going to break down everything you need to know about 6.7 Cummins cylinder heads. We’ll explain the different options available, what to look for, and how to avoid common mistakes. By the end, you’ll feel confident in your choice and ready to get your truck back on the road with a healthy engine.
Our Top 5 6.7 Cummins Cylinder Head Recommendations at a Glance
Top 5 6.7 Cummins Cylinder Head Detailed Reviews
1. DK Cylinder Head Complete with Valves – Compatible with Cummins Dodge Ram 6.7L 2007-2017 Common Rail Cummins Diesel
Rating: 8.6/10
Is your Dodge Ram 6.7L Cummins diesel engine running rough or showing signs of wear? The DK Cylinder Head Complete with Valves is a fantastic replacement part that brings your engine back to life. This complete unit comes loaded with all the necessary valve train components, making it a convenient and time-saving solution for your truck. It’s designed to fit a wide range of Dodge Ram models from 2007 all the way up to 2018, ensuring a perfect fit for your 2500, 3500, or 4500 series truck. You get a brand-new cylinder head ready to install, helping you get back on the road with confidence.
What We Like:
- It’s a complete assembly, saving you time and hassle.
- Direct fitment means easy installation.
- Works with many Dodge Ram 6.7L Cummins models from 2007-2018.
- You get a brand-new part, not a used or remanufactured one.
What Could Be Improved:
- While it’s a great replacement, it’s always wise to double-check compatibility for your specific truck’s VIN.
This DK Cylinder Head is a solid choice for anyone needing to replace their Cummins 6.7L cylinder head. It offers a complete package to get your engine running smoothly again.
2. DK Cylinder Head Complete with Valves & Head Gasket DK Studs – Compatible with Cummins Dodge Ram 6.7L 2007-2017 Common Rail Cummins Diesel
Rating: 8.7/10
If your Cummins Dodge Ram 6.7L diesel engine needs a serious upgrade, the DK Cylinder Head Complete is a fantastic option. This package gives you a brand new cylinder head that comes already loaded with its valve train. It also includes strong DK aftermarket head studs and a reliable Mahle head gasket. This means you get everything you need in one box to get your engine back in top shape or even improve its performance. It’s designed to fit perfectly in Dodge Ram 2500, 3500, and 4500 trucks from 2007 to 2018 with the 6.7L common rail Cummins diesel engine.
What We Like:
- It’s a complete kit, saving you time and hassle.
- The head comes pre-loaded with the valve train.
- Includes robust DK aftermarket head studs for extra strength.
- Uses a trusted Mahle head gasket.
- Designed for direct fitment, making installation easier.
- Compatible with a wide range of popular Dodge Ram Cummins models.
What Could Be Improved:
- The product description doesn’t specify the material of the cylinder head itself.
- While it’s a complete kit, some users might prefer to choose their own specific head studs or gasket.
This DK Cylinder Head package offers a convenient and comprehensive solution for your Cummins 6.7L diesel. You get quality components that are built to last, making it a solid investment for your truck.
3. 4936081 Complete Cylinder Head Assembly Compatible with Cummins 6.7L Engine Diesel ISB6.7 ISDE6.7 QSB6.7 Cylinder Head with 24 Valve replace 3977221 3977225
Rating: 8.6/10
Is your Cummins 6.7L diesel engine running rough? Does it need a new heart? This 4936081 Complete Cylinder Head Assembly is designed to bring your ISB6.7, ISDE6.7, or QSB6.7 engine back to life. It’s a direct replacement for old or damaged cylinder heads, ensuring your truck or equipment performs like new again. This 24-valve head is built to last, offering reliable power and efficiency.
What We Like:
- Perfect Fit: This assembly is made for Cummins 6.7L engines like ISB6.7, ISDE6.7, and QSB6.7.
- Direct Replacement: It replaces common OEM part numbers such as 3977225 and 3977221, making installation straightforward.
- Ready to Go: The assembly comes complete with springs, valve seats, locks, and seals. You don’t need to buy these extra parts.
- Top Quality: It’s built to meet or exceed original equipment manufacturer (OEM) standards for dependable performance.
- Customer Support: The seller offers great support. They want you to be happy with your purchase and will help if any problems arise.
What Could Be Improved:
- Installation Clarity: While important, the note about checking part numbers and vehicle details could be more prominent before purchase.
This cylinder head assembly is a solid choice for anyone needing to restore their Cummins 6.7L engine. With its quality construction and included parts, it offers great value and peace of mind.
4. Complete Cylinder Head 4936081 Compatible With Cummins 6.7L Engine 24 Valve
Rating: 8.9/10
Revitalize your Cummins 6.7L engine with the Complete Cylinder Head, part number 4936081. This brand-new cylinder head is specifically designed for 24-valve Cummins engines. It promises to restore lost power and improve your engine’s performance. You get a reliable replacement part that fits perfectly.
What We Like:
- Direct fit for Cummins 6.7L 24-valve engines.
- Brand new, ensuring optimal performance and longevity.
- Comes with a 6-month warranty for peace of mind.
- Restores engine power and efficiency.
What Could Be Improved:
- No mention of included gaskets or seals.
- Installation instructions could be more detailed.
This cylinder head is a solid option for anyone needing to replace a worn-out part. It offers a new lease on life for your Cummins engine.
5. NEW Complete Cylinder Head with 24 Valves 4936081 3977221 for Cum mins 6.7L Diesel ISB6.7 ISDE6.7 QSB6.7 2005-2010
Rating: 9.4/10
Revitalize your Cummins 6.7L diesel engine with this brand-new, complete cylinder head. It’s designed for a perfect fit on ISB6.7, ISDE6.7, and QSB6.7 engines from 2005 to 2010. This head comes fully assembled, ready to get your truck back on the road.
What We Like:
- This cylinder head is brand new, meaning you get top performance without any wear and tear.
- It includes all new valves, springs, retainers, and locks. This saves you time and money because you don’t have to buy these parts separately.
- There’s no core charge. This means you don’t have to return your old cylinder head to get a discount, which is a big convenience.
- It matches OEM part numbers 4936081 and 3977221, ensuring it’s the right part for your specific Cummins engine.
What Could Be Improved:
- While it’s a complete head, some experienced mechanics might prefer to choose their own specific valve springs or retainers for highly customized builds.
- The product description doesn’t mention any specific warranty information, which is always good to know for peace of mind.
This complete cylinder head is a straightforward solution for engine repairs. It offers a hassle-free way to restore your Cummins 6.7L diesel’s power.
Choosing the Right 6.7 Cummins Cylinder Head: A Buyer’s Guide
Is your 6.7 Cummins engine acting up? A cylinder head is a vital part of your engine. It sits on top of the engine block. It seals the combustion chambers. It also houses valves and other important parts. If you need a replacement or an upgrade, picking the right cylinder head is important. This guide will help you make a smart choice.
Key Features to Look For
When you shop for a 6.7 Cummins cylinder head, keep these things in mind:
- Material: Most heads are made of cast iron or aluminum. Cast iron is strong and lasts a long time. Aluminum is lighter and can help your engine run cooler.
- Valves: Check the size and quality of the valves. Bigger valves can let more air and fuel into the engine. This can give you more power. High-quality valves are made from strong metal. They won’t bend or break easily.
- Ports: The ports are like tunnels for air and fuel. Smooth, well-shaped ports help the engine breathe better. This means better performance.
- Combustion Chamber Design: The shape of the combustion chamber affects how well the fuel burns. Some designs are made for more power. Others are better for fuel economy.
- Gaskets and Seals: Make sure the head comes with good quality gaskets and seals. These are important for a tight seal. A good seal stops leaks.
Important Materials
The metal used for your cylinder head matters a lot.
- Cast Iron: This is the most common material. It’s very strong. It can handle high heat and pressure. Cast iron heads are durable. They are a good choice for everyday driving.
- Aluminum: Aluminum heads are lighter than cast iron. This can help your truck’s overall weight. They also transfer heat well. This means your engine might run a bit cooler. Aluminum heads can be more expensive.
Factors That Improve or Reduce Quality
Several things make a cylinder head great or not so great.
- Manufacturing Process: How the head is made is key. Precision machining ensures all parts fit perfectly. Good manufacturing means fewer weak spots.
- Testing and Quality Control: Reputable companies test their heads thoroughly. They check for cracks or other flaws. This ensures you get a reliable part.
- Brand Reputation: Some brands are known for making high-quality engine parts. Researching brands can help you find a good one.
- Design for Specific Needs: A head designed for towing might be different from one for racing. Choose a head that fits how you use your truck. A poorly designed head can cause problems.
User Experience and Use Cases
How will you use your 6.7 Cummins? This is important.
- Everyday Driving: For normal use, a stock replacement or a high-quality cast iron head is usually best. It offers reliability and good performance.
- Towing and Hauling: If you tow heavy loads, you need a head that can handle extra stress. Look for heads designed for durability. They should have good cooling properties.
- Performance Upgrades: If you want more power, you might look at performance heads. These often have larger valves and better porting. They can improve airflow.
- Replacement: If your old head is cracked or damaged, a direct replacement is needed. Make sure it matches your engine’s specifications.
Frequently Asked Questions (FAQ)
Q: What does a 6.7 Cummins cylinder head do?
A: A cylinder head seals the engine’s combustion chambers. It holds the valves and other important engine parts.
Q: Why would I need a new cylinder head?
A: You might need a new head if the old one is cracked, warped, or damaged. Overheating can also cause damage.
Q: Are aluminum cylinder heads better than cast iron?
A: Not always. Aluminum is lighter and cools better. Cast iron is stronger and more durable for heavy-duty use.
Q: What are the most common problems with 6.7 Cummins cylinder heads?
A: Cracking and warping due to overheating are common issues. Valve seat issues can also occur.
Q: How do I know if my cylinder head is bad?
A: Signs include white smoke from the exhaust, coolant loss, or overheating. You might also hear strange engine noises.
Q: Can I upgrade my stock 6.7 Cummins cylinder head?
A: Yes, you can upgrade to a performance head. These can offer more power and better airflow.
Q: What are valve seats?
A: Valve seats are rings inside the cylinder head. They create a seal when the valves close.
Q: Should I buy a complete cylinder head or just the head casting?
A: A complete head comes with valves, springs, and other parts. It’s often easier and more convenient.
Q: How much does a 6.7 Cummins cylinder head cost?
A: Prices vary widely. A basic replacement can cost several hundred dollars. Performance heads can cost over a thousand dollars.
Q: Where can I buy a good 6.7 Cummins cylinder head?
A: You can buy them from reputable auto parts stores, online retailers, and specialized diesel performance shops.
In conclusion, every product has unique features and benefits. We hope this review helps you decide if it meets your needs. An informed choice ensures the best experience.
If you have any questions or feedback, please share them in the comments. Your input helps everyone. Thank you for reading.
Hey there, My name is Joe Martin & I’m the author of OffroadersGuild.com. I’ve been hitting the dirt for a while now. I’ve been off-roading in all sorts of vehicles, from Jeeps to trucks and everything in between.
I’ve also built and modified a few off-road vehicles of my own, so I know what works and what doesn’t when it comes to upgrading and modifying off-road vehicles. I started this website to share my experience and help others get the most out of their off-roading adventures. Let’s hit the trails!