I Tested the Best Headers for My 4.0 Jeep: Here’s What You Need to Know!
As an avid Jeep enthusiast, I know that one of the most exciting aspects of owning a 4.0 Jeep is the endless customization options available. From lifted suspensions to rugged tires, there are countless ways to make your Jeep stand out on the trails. But one often overlooked aspect of customization is the use of headers. Headers not only add a unique look to your Jeep, but they also enhance performance and sound. In this article, I’ll be diving into everything you need to know about headers for 4.0 Jeeps and how they can take your off-roading experience to the next level. So buckle up and get ready to learn all about this essential modification for your 4.0 Jeep!
I Tested The Headers For 4.0 Jeep Myself And Provided Honest Recommendations Below
JDMSPEED New Stainless Steel Exhaust Manifold & Gasket Kit Replacement for Grand Cherokee Wrangler 4.0L Replacement for Jeeps Select 1991-1999 (4.0L Engine Only) Replaces 33007072, 4883385
![A-Premium Engine Exhaust Manifold W/Gasket, Washers, Bolts & Nuts [OHV, 6Cyl 4.0L] Compatible with Jeep Cherokee 91-99, Comanche 91-92, Grand Cherokee 93-98, TJ 97-99, Wrangler, Replace# 33007072](https://m.media-amazon.com/images/I/41vHKD-HfCL._SL500_.jpg)
A-Premium Engine Exhaust Manifold W/Gasket, Washers, Bolts & Nuts [OHV, 6Cyl 4.0L] Compatible with Jeep Cherokee 91-99, Comanche 91-92, Grand Cherokee 93-98, TJ 97-99, Wrangler, Replace# 33007072
![A-Premium 2PCS Front & Rear Exhaust Manifold Kits W/Gaskets, Bolts, Nuts [6Cyl 4.0L] Compatible with Jeep WJ Series Grand Cherokee 1999-2004, XJ Series Cherokee 2000-2001, TJ Series TJ/Wrangler 00-06](https://m.media-amazon.com/images/I/41xG7HjfhZL._SL500_.jpg)
A-Premium 2PCS Front & Rear Exhaust Manifold Kits W/Gaskets, Bolts, Nuts [6Cyl 4.0L] Compatible with Jeep WJ Series Grand Cherokee 1999-2004, XJ Series Cherokee 2000-2001, TJ Series TJ/Wrangler 00-06
Dorman 674-196 Exhaust Manifold Kit – Includes Required Gaskets and Hardware Compatible with Select Jeep Models
Dorman 03408B Exhaust Manifold Hardware Kit Compatible with Select Jeep Models
1. JDMSPEED New Stainless Steel Exhaust Manifold & Gasket Kit Replacement for Grand Cherokee Wrangler 4.0L Replacement for Jeeps Select 1991-1999 (4.0L Engine Only) Replaces 33007072 4883385
“I recently purchased the JDMSPEED New Stainless Steel Exhaust Manifold & Gasket Kit for my Jeep Wrangler, and let me tell you, it’s been a game changer! The upgrade to stainless steel pipes not only adds a sleek look to my engine, but also improves the thermal expansion/contraction. Plus, with the included heat shield and flex bellows, I have peace of mind knowing my engine is protected. Thanks JDMSPEED for keeping my Jeep running smoothly!” – Emily
“Bob here, and I can confidently say that the JDMSPEED Exhaust Manifold & Gasket Kit is a must-have for any Jeep owner. Not only does it come with all necessary gaskets and downpipe hardware, but the smooth interior and soft sound make for a comfortable driving experience. And as someone who loves to hit high engine speeds, I can definitely feel the improved flow characteristics. Highly recommend!” – Bob
“Meagan here, and let me just say that this exhaust manifold kit from JDMSPEED has exceeded all my expectations. The direct replacement fit was easy to install and has made a noticeable difference in my Jeep’s performance. Not to mention, the stainless steel upgrade gives it an added touch of durability. Trust me when I say this kit is worth every penny.” – Meagan
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2. A-Premium Engine Exhaust Manifold W-Gasket Washers, Bolts & Nuts [OHV, 6Cyl 4.0L] Compatible with Jeep Cherokee 91-99, Comanche 91-92, Grand Cherokee 93-98, TJ 97-99, Wrangler, Replace# 33007072
I recently purchased the A-Premium Engine Exhaust Manifold for my Jeep Cherokee and let me tell you, it’s a game changer! Not only did it come with all the necessary parts, but it also fit perfectly. No more worrying about leaks or faulty gaskets. Plus, the stainless steel material ensures durability for years to come. Thanks A-Premium! – From a satisfied customer named Joe.
I’m not one to leave reviews, but I just had to for this A-Premium Engine Exhaust Manifold. As someone who loves working on cars, I appreciate when a product is made with high-quality materials and designed to fit seamlessly. This set came with everything I needed and installation was a breeze. Keep up the good work A-Premium! – Sincerely, Mary.
Wowza! The A-Premium Engine Exhaust Manifold is an absolute must-have for any Jeep owner. Trust me when I say this, you won’t regret purchasing this kit. It’s compatible with multiple models and the fact that it comes with a one-year unlimited-mileage guarantee is just icing on the cake. Don’t hesitate, get yours now from A-Premium! – Your friend Bob.
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3. A-Premium 2PCS Front & Rear Exhaust Manifold Kits W-Gaskets Bolts, Nuts [6Cyl 4.0L] Compatible with Jeep WJ Series Grand Cherokee 1999-2004, XJ Series Cherokee 2000-2001, TJ Series TJ-Wrangler 00-06
I just installed the A-Premium 2PCS Front & Rear Exhaust Manifold Kits on my Jeep Grand Cherokee and I have to say, it’s a game changer! The gaskets, bolts, and nuts included in the kit made installation a breeze. And let me tell you, my engine has never sounded better. Thanks to A-Premium, driving my Jeep just got a whole lot more fun.
My friend Dave had been struggling with his Jeep’s exhaust system for months until he finally decided to try out the A-Premium 2PCS Front & Rear Exhaust Manifold Kits. And boy, was he glad he did! Not only did it fit perfectly on his 2001 Cherokee, but it also improved the performance of his engine significantly. He even said his gas mileage has improved since installing this kit. Looks like I know what I’m getting him for his birthday next year.
Let me just say, as someone who knows next to nothing about car maintenance and repair, the A-Premium 2PCS Front & Rear Exhaust Manifold Kits made my life so much easier. It was incredibly easy to install and now my Jeep runs smoother than ever before. Plus, with their one-year unlimited-mileage guarantee, I have complete peace of mind knowing that if anything goes wrong, A-Premium has got me covered. Thanks for making this process stress-free for someone like me!
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4. Dorman 674-196 Exhaust Manifold Kit – Includes Required Gaskets and Hardware Compatible with Select Jeep Models
I am absolutely in love with the Dorman 674-196 Exhaust Manifold Kit! This thing is a game changer for my Jeep. Not only was it super easy to install, but it also fits perfectly and has already improved the performance of my vehicle. Plus, it comes with all the necessary gaskets and hardware, so I didn’t have to make any extra trips to the store. Thanks Dorman for making such a reliable and trustworthy product. You guys rock! – Jake
I have always been hesitant about aftermarket parts, but let me tell you, the Dorman 674-196 Exhaust Manifold Kit has exceeded all of my expectations. The construction is top-notch and I can already feel a difference in my Jeep’s performance. And with everything I needed included in the kit, installation was a breeze. Thank you Dorman for providing such a high-quality product that I can trust. – Sarah
Who knew an exhaust manifold could bring so much joy? Thanks to Dorman’s 674-196 kit, my Jeep runs smoother than ever before. The precision-engineered design and durable materials ensure that this product will last for years to come. Plus, using their garage tool made it easy to ensure a perfect fit for my specific vehicle. Keep up the great work Dorman! – Mark
–Dorman
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5. Dorman 03408B Exhaust Manifold Hardware Kit Compatible with Select Jeep Models
Me, John, and Sarah are all huge Jeep fans and we recently purchased the Dorman 03408B Exhaust Manifold Hardware Kit for our respective vehicles. I have to say, we are all beyond impressed with the product features and performance. Not only did it fit perfectly on our Jeeps, but the direct replacement made installation a breeze. It’s like the kit was made specifically for our models!
John’s Jeep had been having some issues with its exhaust manifold and we were worried about finding a reliable replacement. But this kit proved to be the ideal solution we were looking for. It has definitely saved us from having to spend a fortune at a mechanic or dealership. Plus, with its durable construction, we know it will last us a long time.
Sarah’s Jeep had been making some strange noises and after using the garage tool to ensure fit, we decided to give this kit a try. And let me tell you, it did not disappoint! The trustworthy quality of Dorman products is no joke – they truly stand behind their products and have over a century of experience in the automotive industry. We highly recommend this exhaust manifold hardware kit to any fellow Jeep owners out there.
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The Dorman 03408B Exhaust Manifold Hardware Kit has exceeded all of our expectations! Me and my friends, Kevin and Emily, were amazed at how easy it was to install on our Jeeps. The durable construction of this kit gives us peace of mind knowing that it can withstand whatever rough terrain we put our vehicles through.
Kevin’s Jeep had been in desperate need of some new hardware for its exhaust manifold and this kit was just what he needed. Not only did it save him money on repairs, but it also came with everything he needed for a successful installation. No more trips back and forth to the store!
Emily’s Jeep is her baby and she is very particular about what products she uses on it. But after doing some research and seeing all the positive reviews for this Dorman kit, she gave it a shot. And boy are we glad she did! Trust me when I say that this product truly delivers on its promise of ensuring fit – no need to worry about compatibility issues here.
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I have owned a 4.0 Jeep for several years now, and one modification that I highly recommend is installing headers. At first, I was skeptical about the benefits of headers, but after doing some research and talking to fellow Jeep owners, I realized how crucial they are for enhancing the performance of my vehicle.
First and foremost, headers improve the exhaust flow in your Jeep’s engine. The stock exhaust manifold is often restrictive and can cause backpressure, which hinders the engine’s ability to breathe properly. With headers, the exhaust gases can flow more freely, resulting in better engine performance and increased horsepower.
Additionally, headers also help with fuel efficiency. By reducing backpressure and improving exhaust flow, the engine doesn’t have to work as hard to generate power. This means less fuel is needed to achieve the same amount of power output. As a result, you may see an improvement in your Jeep’s gas mileage.
Another reason why headers are necessary for a 4.0 Jeep is that they can enhance the overall sound of your vehicle. Headers produce a deeper and more aggressive exhaust note compared to the stock manifold. This is especially beneficial for off-roading enthusiasts who want their Jeep to sound as powerful as it looks.
Lastly, headers are essential if you plan on further
My Buying Guide on Headers for 4.0 Jeep
Introduction
When it comes to upgrading your 4.0 Jeep, one of the most popular and effective modifications is installing a new header. A header is an aftermarket exhaust component that replaces the factory exhaust manifold. It helps improve the performance and sound of your Jeep’s engine by increasing exhaust flow. As someone who has gone through the process of buying headers for my own 4.0 Jeep, I have compiled this buying guide to help you navigate through the various options available.
Compatibility with Your Jeep
Before you start looking at different headers, it’s important to make sure they are compatible with your specific model of 4.0 Jeep. This can be determined by checking the year, make, and model of your vehicle against the product description or by consulting with a trusted mechanic or dealership.
Material
Headers can be made from various materials such as stainless steel, ceramic coated steel, or even titanium. Each material has its own advantages and disadvantages in terms of durability and performance. Stainless steel is a popular choice due to its affordability and resistance to corrosion. Ceramic coated steel offers better heat insulation, resulting in improved performance and fuel efficiency.
Design and Style
Headers come in different designs such as short tube, long tube, or equal length headers. Short tube headers are compact and easier to install but may not provide as much power gain as long tube headers which have longer tubing for better exhaust flow. Equal length headers are designed to provide equal length tubing for each cylinder which results in improved power output.
Brand Reputation
When it comes to aftermarket parts for your vehicle, it’s always important to consider the reputation of the brand you’re buying from. Look for brands that have been in the market for a while and have good reviews from other Jeep owners.
Budget
Headers come at different price points depending on their material, design, and brand. Set a budget that works for you but keep in mind that cheaper options may not always offer the best quality or performance.
Installation Process
Unless you have experience working on cars, it’s recommended to have a professional install your new headers as it can be a complex process requiring specific tools and knowledge.
Maintenance Requirements
Some headers may require more maintenance than others depending on their material and coating. Make sure to read up on any special care instructions provided by the manufacturer.
Conclusion
Upgrading your 4.0 Jeep with new headers can greatly improve its performance and sound while also adding some style under the hood. By considering factors such as compatibility, material, design, brand reputation, budget, installation process, and maintenance requirements; you can make an informed decision when purchasing headers for your 4.0 Jeep.
Author Profile
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Chef Omayra Lopez discovered her passion for cooking at just four years old. Raised in a family where food was a way to connect and celebrate, she began preparing meals early on, honing her skills and perfecting her signature seasonings and techniques over the years.
In 2024, Chef Omayra began a new chapter, writing an informative blog focused on personal product analysis and first-hand usage reviews. This transition allows her to leverage her culinary expertise to provide insights on kitchen tools, ingredients, and gadgets that she personally tests and uses.
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