The question is…What is the Best Jeep 4.0 header?
You may be looking to replace a faulty header or trying to increase your cars performance.
If you need a replacement that improves performance and has good longevity, this 4.0 Header review and buying guide for your Jeep may have the answers you need.
It’s true, the best Jeep 4.0 header pumps up your Jeep with trail-blazing power. The exhaust system is responsible for effectively driving the gases resulting from combustion outwards.
As well as, it helps to reduce vehicle toxicity before letting them out so that their operation directly affects the performance of your vehicle and the environment.
If at any time we notice a loss of vehicle power, we hear a sound of loose parts while driving, the exhaust emits an abnormal amount of dark smoke or makes a grinding and intense sound.
Best Performance Headers for Jeep 4.0
If you are looking for the best exhaust headers, here we are presenting to you the top seven best headers for your Jeep.
07 Best Jeep 4.0 Header Reviews 2020
The exhaust header is designed so that the combustion gas outlet is guided by the exhaust system from the different cylinders through a single duct, saving space and allowing the use of a separate series of acoustic filters
Besides, this system helps to control the levels of force and pressure with which the gases are expelled, improving the displacement of the vehicle in high revolutions.
If the quality of the exhaust manifold were not adequate, the possible leaks or wear would cause losses in the Engine’s propellant performance. In this case, it needs to be replaced.
Here in the following, we present you the best exhaust headers for your Jeep so it will be easier for you to buy for your vehicle.
01. Banks 51327 Exhaust Manifold
The new exhaust manifold offers more power, stricter construction, and quicker acceleration than ever. This manifold is for the 1991 to 99 Jeep 4.0 liter.
It is made of mandrel-bent, and super-durable 409 stainless steel tube and has a ½” thick precision ported and machined flange.
In addition, it is manifold is fortified with a “revolver” collector that features Bank’s patented “Power Pickle” technology that provider super performance even in extreme conditions.
Banks 51327 exhaust manifold has a longer center tube in the 6-cylinder exhaust collector that captures exhaust pulse actions, and it turns into massive torque in the operating range.
Each tube of this exhaust manifold is welded to the flange twice – inside and out that offers robust performance. If you are looking for the best header that performs well even in the roughest terrain, this can be the best product.
This exhaust manifold also features self-aligning seals that will never compress or blow out, open manifold ports, and double-welded manifold tubes.
- Torque tube system
- More power and quicker acceleration
- Fortified with a “Revolver” collector
- Super-duty manifold flanges
- High-quality parts
- Good fitment and craftsmanship
- The surface finish looks great
- More rigid design
- Bottom bolts are far harder
- Downpipe does not have studs
02. Dorman 674-196 Header
Dorman brand is one of the leaders in the field of headers. If you are looking for the best Jeep 4.0 Header, Dorman 674-196 header can be your final choice.
It offers a direct replacement. Its exact-fit Kit replaces the factory-installed exhaust manifold vehicle. It is made of cast iron or stainless steel tube that protects against deformation and/or cracks.
It is utterly leak-resistant for long-term performance. Dorman’s Exhaust headers include hardware and gaskets for a whole installation.
As this part can be replaced directly, the precise fit adds another level of convenience and efficiency.
The design of this header makes the exhaust smoother, improves performance, and enjoys a pleasant driving experience. It is the best choice to make your Jeep better.
It is made of high-strength stainless steel with anti-corrosion and exquisite artistry, which improve the durability. On the whole, it is a suitable replacement for your old or broken header with easy installation.
And it’s not easy to fall off and fade, making your driving safer and more enjoyable. A rigorous quality inspection has been to ensure that this part conforms to product standards.
- Leak-resistant design
- A rigorous quality inspection to ensure product standards
- Stainless steel tubular construction
- High-quality metal construction
- Standard product
- Some users experienced cracked and blown out tubes.
03. DNA MOTORING HDS-JC9140 Race Header
This race header by DNA is another excellent product. It conducts combustion gases and directs them to the outside of the vehicle through the exhaust system.
One of the best points of DNA motoring HDS-JC9140-CLI model is that it is made of high-quality T304 stainless steel for better durability and strength.
It offers the best flow characteristics for the Engine at high speeds. It can quickly increase the high flow of air. That gains instantly 10-15 hp/tq.
This is designed for long off-road, its tube is a tri-y design that allows exhaust gases flowing more freely from each of the 6 cylinders and combines them more conveniently.
Its tube is optimized for the 4.0L Engine. It created a reduction in back pressure cylinder and improve Velocity gas. Also, its other benefits include more performance-oriented exhaust sound.
Buy this best header for your Jeep, and you will not regret it later.
- 91 – 99 Jeep Wrangler
- 91 – 99 Jeep Grand Cherokee
- 91 – 99 Jeep Cherokee
- With models with 4.0L L6 Engine only
- Easy installation
- Designed in robust T-304 stainless steel
- TIG-welded CNC flange precision
- Increased airflow
- High quality
- Easy installation
- Full T304 stainless steel body
- Poor quality control
- The mating plat does not have the same thickness
04. ECCPP Manifold Set Stainless Steel Front
ECCPP is one of the leaders in manufacturing manifolds for vehicles. This exhaust manifold model is made of stainless steel tubular construction that offers a robust anticorrosive structure.
The tubular can protect against cracks and deformations. It is designed with leak-resistant that provides long-lasting performance. Exhaust system applications: 1991 to 1999 Cherokee, 1991 to 1992 Comanche (MJ), 1993 to 1998 Grand Cherokee, and 1997 to 1999 Wrangler.
Important point: Direct replacement, the exact adjustment kits replace the factory-fitted exhaust header of the vehicle. A precise quality inspection has carried out to ensure that it matches to standards product.
This manifold includes one exhaust header kit with gaskets. It is advisable first to check the model, make, and year of your vehicle to confirm compatibility before buying.
- 1991 to 1999 Cherokee 4L l6
- 1991 to 1992 Comanche 4L l6
- 1993 to 1998 Grand Cherokee 4L l6
- 1997 to 1999 TJ 4L l6
- 1991 to 1999 Wrangler 4L l6
- High-temperature inoxidizability
- OE specified design
- Strong anticorrosive structure
- Leak resistant for lasting performance
- OE specified design
- High-temperature inoxidizability
- The best after-sales service by ECCPP
- Some users complained about its poor quality
05. Auto Dynasty HD-JC9140 Jeep Cherokee Header
This exhaust manifold can be found in the 91 Jeep Wrangler, Grand Cherokee, and Cherokee. It is designed to combine the exhaust gasses from each of the 6 cylinders in no time with manifolds, which were cost-effective to make.
If you are in search of the best performance headers of your vehicle, you should not miss buying the HD-JC9140 exhaust manifold model by Auto Dynasty.
This long tube off-road header is a Tri-Y design that allows the exhaust gas to flow more smoothly from each of the 6 cylinders and combine them more efficiently.
The tubing of this exhaust manifold has optimized for the 4 L engine. It creates a reduction in backpressure cylinder and improves exhaust gas velocity.
These enhancements free up lost torque and horsepower. Its added advantage is a more performance-oriented exhausting sound.
This product includes 1 piece of Header Exhaust System, Bolts, and Gaskets.
- 1991 to 99 Wrangler
- 1991 to 99 Cherokee
- 1991 to 99 Grand Cherokee
- Fit Models with 4.0L 16 Engine only
- Tri-Y design that helps to flow more freely
- Improved exhaust gas velocity
- Oriented exhaust sound
- Easy to install
- High quality
- Smoother acceleration
- A customer has received a trashed gasket
- It does not fit properly
06. CCIYU Stainless Steel Exhaust Manifold
If you are looking for the long-lasting performance of your vehicle, you should not miss buying CCIYU exhaust manifold header.
CCIYU gas brought one of the best exhaust manifolds for us. It features better airflow, and it improves exhaust velocity performance offering higher power and a great flow. Buy this leak-resistant for the long-lasting performance of your favorite Jeep.
The CCIYU exhaust manifold takes advantage of the speed of exit of the burned gases to impel its turbine and the one of admission that is united to this by a solidarity axis.
The valve is responsible for admitting a percentage of exhaust gases towards the intake to impoverish the mixture and maintain combustion within the allowed environmental limits.
- This exhaust manifold kit is for Jeep Cherokee 1991, 1992, 1993 1994 1995 1996 1997 1998 1999 models.
- Jeep Comanche 1991 and 1992.
- Jeep Grand Cherokee, 1993, 1994, 1995, 1996, 1997, and 1998.
- Jeep TJ 1997, 1998, and 1999
- Jeep Wrangler 1991, 19992, 1993, 1994, 1995, 1997, 1998, 1999.
- Better airflow design
- Improved exhaust speed performance
- Very well constructed
- Easy installation
- Robust material
- Does not fit 94 Grand Cherokee
07. MILLION PARTS Stainless Steel Header
This model is suitable for Jeep Cherokee Wrangler from 1991 to 1999 models and Jeep Grand Cherokee 4 L l6. This header is made of robust quality T304 Stainless Steel for better durability and strength.
This header kit by Millions Part is consists of as many tubes as cylinders the Engine possesses, and at the other end, they are linked together.
From there, the gases are channeled to the catalyst, which will act as a filter and then slide them through the exhaust pipe and the silencer before they reach our atmosphere again.
It is built with TIG CNC welded machine flange for high adjustment and precision. Precision machined steel flanges which offer a tight seal on the head, and it allows high flow through the primary tubes.
All the tubes of this product are mandrel and increase high flow air that helps to gain instantly 10 to 15 HP per Tq.
- Made of high-quality T-304 stainless steel
- Built with TIG welded CNC machine
- Offers greater precision and adjustment
- Great quality
- Perfect fitting
- Easy installation
- Quite pricy
- Donut gasket does not have the right size
Jeep Cherokee Banks Revolver Header Installation: Full Process
User Buying Consideration for Best Performance Headers
A header means a pipe section that results in a change of direction. In automotive technology, manifolds are used in the exhaust systems of gasoline and diesel engines between the cylinder and exhaust and, therefore, also referred to as exhaust manifold.
Likewise, exhaust headers are also used on the intake side for sucking the fuel-air mixture, which is known under the name intake manifold.
If you are looking for the best performance headers, the following are some of the buying consideration which will be helpful to you to buy the best one.
Size of the Header
Remember, the bigger header is not always better. Even small-sized diameter primaries will flow less volume than the bigger sized primaries. A small sized pipe creates faster exhaust flow with sufficient resistance to foster good midrange and low torque.
The Header Must Withstand High Loads
In appearance, the header is a tube connected to the cylinder block and the exhaust or catalyst. However, high demands are placed on the material of an exhaust header.
Due to the up to 900 ° C hot exhaust gases, the material of the header expands greatly, it comes to tensions and ultimately to cracks.
High-quality manifolds are therefore made of alloyed cast or stainless steel. These materials guarantee a long service life of several hundreds of thousands of kilometers, even with several thousand heating-cooling cycles, and are also inexpensive to manufacture.
A new identical design must replace a defective header. The header is not just a pipe that transfers the exhaust gases from the cylinder into the exhaust.
It also has a significant impact on the function and performance of the Engine. Seals on the flanges prevent the escape of exhaust gases. In contrast to the exhaust header, the intake manifold can also be made of aluminum or plastic.
Both types of manifolds are specially designed for the Engine. The use of foreign parts can lead to a significant reduction in performance. That is why you should keep the key figures from your vehicle registration or engine code ready when placing an order.
So that we can select the right manifold for you from our range.
Repair and Replacement
When buying a new header for your Jeep, this point is also necessary to take into consideration. Minor damage or breakdown can be resolved without having to install a new part.
Small holes can be welded using welding machinery. The stainless steel parts, in that case, lose some of their properties and become more fragile.
Milling is used to restoring the original shape of the piece. This type of preventive maintenance allows extending the useful life of the section. If corrosion damage exists, only the header needs to be replaced.
The Material of the Header
Mostly there are two types of equipment available – Stainless Steel and Mild Steel. The benefit of buying a standard steel header is simple – its cost.
Mild steel header costs significantly less than different types of stainless steel, but they do not offer the durability of steel.
Stainless steel header performs last longer than the header, which is made of mild steel in extreme conditions. Stainless steel headers can be able to stand up to excessive heat, and they won’t rust.
Its rust-free surface and the superior thermal characteristics allow it to maintain restriction-free and smooth exhaust flow throughout its lifespan.
Before buying for exhaust headers, you should first check the model, year of the Jeep, and make. Remember that the kits of the blowers and exhaust header refer to the stock parts compatibility.
Besides, you must check it the stock engine offers torque at RPMs low-end and substantial power.
The best exhaust headers for 4.0 Jeep price range from $2,000 to $8,000, which is without installation and shipping price. Before narrowing down or deciding a header, search the reputation of the manufacturer, their customer service, and warranty.
Also, discuss the final price and expected installation time.
Installation is also a point to consider. It should be an easy installation. The centrifugal blower is complex, and it always needs the assistance of professionals.
Thus, an unexpected cost is also added to the installation. So it is advisable to buy the header that offers an easy installation.
Choosing a brand with good provenance is extremely important. Remember that the exhaust directly influences the performance of the car and, as beautiful as it may seem on the outside, inside can be very bad.
Always buy from trusted brands, indicated by the manufacturer, or with good ratings. Do a search!
Photo Credit: Nick Ares
We are sure, after going through this review, now you will be able to buy the best Jeep 4.0 header.
Obviously, the best header plays an integral part in Jeep. If you do not replace it in time, your vehicle, in addition to not functioning correctly, will probably cause increased fuel consumption and increase your Jeep’s CO2 emissions.
So, as prevention is better than cure, the ideal not to have to reach these extremes is to perform a regular review of all the components of your vehicle’s exhaust system.
Our advice is: reduce your car’s CO2 emissions and save fuel, check the exhaust system every 50,000 km or once a year and avoid bumps on the underside of the vehicle.