Best headers for GMC Sierra 2023

Struggling to pick the perfect headlight for your GMC Sierra 2023? You’re in luck! This article is the ultimate guide to finding the best headers for your truck.

From energy-saving LED headlights to sleek Euro-style upgrades, we have all the information you need to make an informed decision. Discover which headlights are best for you and upgrade your GMC today!

Best headers for GMC Sierra 2023

  1. Flowtech 91843FLT  (Editor’s pick)
  2. POWERGO MOTORSPORT  (Best Overall)
  3. Gibson Performance Exhaust GP129S  (Budget Friendly)
  4. BBK Performance 40050 
  5. Flowtech 31142FLT Shorty Headers
  6. A-Team Performance LS Swap
  7. Flowtech 91835FLT Shorty Headers

1)Flowtech 91843FLT

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The Flowtech 91843FLT is a high-quality exhaust system that is designed to boost your vehicle’s horsepower and performance. This exhaust system is designed to provide excellent flow, effectively reducing backpressure and increasing horsepower. The Flowtech 91843FLT features a hollow core design that effectively reduces weight and provides a sleek and stylish look.

This exhaust system is easy to install and comes with all the fittings you need to get it up and running in no time. With the Flowtech 91843FLT, you can take horsepower and performance to the next level, providing your vehicle with the power and speed you need to take on the road ahead.

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POWERGO MOTORSPORT offers industry-leading exhaust system kits with their innovative designs and top-quality materials. With their internal improvements, their kits are designed to deliver increased performance with instantaneous boosts in horsepower and torque.

Their exhaust systems are engineered to have the best possible flow and reduce back pressure, resulting in more power and efficiency. POWERGO MOTORSPORT exhaust systems are available in various lengths and diameters, ranging from 2.25 inches to 4 inches, making it easy for you to choose the right exhaust system for your vehicle’s needs. Their exhaust kits leave other exhaust systems in the industry far behind with their superior quality and innovation.

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3)Gibson Performance Exhaust GP129S

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Gibson Performance Exhaust GP129S is a high-quality exhaust system made from top-of-the-line materials. The exhaust system is machined with a meticulous process, and the matte finish gives it a sleek and modern look.

The mechanical lubricant used in this exhaust system is designed to reduce friction and increase performance. The Gibson Performance Exhaust GP129S provides excellent sound quality with its unique and aggressive tone, and it has a distinctive message that will make your vehicle stand out on the road.

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4)BBK Performance 40050

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BBK Performance 40050 is a modern engine control module (ECM) designed to monitor your vehicle’s performance in real-time. The BBK Performance 40050 meticulously monitors your vehicle’s mileage, speed, and other important data. With this module, you can customize your vehicle’s performance to suit your needs, resulting in improved power and performance.

The BBK Performance 40050 also comes with an MST (Modular Switching Technology) which allows for easy mounting and installation. The module comes with excellent mounts and is designed to withstand the most extreme conditions, providing you with improved performance for miles and miles.

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5)Flowtech 31142FLT Shorty Headers

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Flowtech 31142FLT Shorty Headers are designed with multilayer technology to ensure high performance and excellent efficiency. These headers are designed to improve your vehicle’s power output, providing you with increased horsepower and torque. The Flowtech 31142FLT Shorty Headers are made from high-quality materials and come with all the nuts and fittings needed for easy installation.

The headers are designed with a nine-inch collector for improved performance and a unique sound quality. With these shorty headers, you’ll have improved power and performance, and you’ll enjoy a better music experience while driving.

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6)A-Team Performance LS Swap

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The A-Team Performance LS Swap is an optimal and efficient solution for a wide variety of vehicles, including off-road and off-the-hood applications. This LS Swap is equipped with OBD-II monitoring and optimized for optimal performance, ensuring a smooth and reliable ride. It is built with high-quality parts that are resistant to particles and objects that could damage your vehicle’s engine. The LS Swap is designed to be a complete and easy-to-install solution, with all the necessary parts included.

This product is rigorously tested to ensure that it meets the manufacturer’s high standards for quality and durability. It is a popular choice among automotive enthusiasts who want to upgrade their engine and increase its power output. The LS Swap is available in various configurations and sizes, making it easy to find the perfect fit for your vehicle.

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7)Flowtech 91835FLT Shorty Headers

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Flowtech 91835FLT Shorty Headers are designed to provide improved performance and increased power output for your vehicle. These headers are built with high-quality materials that ensure they will last for a long time. They are pre-attached with gaskets and hardware, making them easy to install. The headers are designed to have an optimal pitch, which helps to increase the flow of exhaust gases and improve engine performance.

The headers are available in a variety of sizes and configurations to suit different engine types and vehicles. Flowtech 91835FLT Shorty Headers are a popular choice for professional and amateur racers alike, as they offer a promising combination of performance and durability. The headers are also backed by a manufacturer’s warranty, which gives buyers peace of mind knowing that they are getting a high-quality product.

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Best headers for GMC Sierra 2023-Complete Buying Guide

For the 2023 GMC Sierra, few trucks can compete in terms of power, comfort, and impressive exterior. Auto experts and casual drivers alike have commented on how the GMC Sierra has managed to stay ahead of its competition by continually raising the bar for just how much luxury, power and capability a truck can offer.

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With that said, knowing what to look for when shopping for a new GMC Sierra can be difficult. After all, there is a dizzying array of different trim packages available that come with varying features. This guide aims to assist potential buyers with navigating features lists and provides an overview of which features are standard on each trim level of the 2023 GMC Sierra.

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Brief overview of GMC Sierra 2023

The GMC Sierra 2023 is a reliable, full-size pickup truck that offers a variety of features and capabilities. This durable vehicle can seat up to six people, has an available 6.2 L V8 engine, and offers an Automatic 4WD mode. It also has an eight-speed automatic transmission with manual shift mode and the trailering system designed specifically for the Sierra.

The three cab models (regular cab, double cab, and crew cab) allow plenty of customization options with separate front and rear suspensions for improved handling in rough road conditions. In terms of looks, this version of the Sierra has a more modern exterior design compared to earlier generations while still maintaining its classic look.

In addition to great performance features, the GMC Sierra 2023 comes with plenty of safety systems such as airbags, traction control, Antilock Braking System (ABS), Electronic Stability Control (ESC), and stability control system to keep you protected on your drives or hauls.

Importance of choosing the best headers for GMC Sierra 2023

A GMC Sierra 2023 can be made even more efficient and powerful by selecting the best headers. The good news is, there are a wide variety of headers available for this model. From light-duty off-roading to solid street performance, knowing what your goals are in terms of horsepower and torque, sound levels, and exterior endurance can help you choose the right set of headers for your GMC Sierra 2023.

When choosing headers for a vehicle, it is important to first determine the intended application: Do you need shorty or full-length, coated or uncoated? Shorty headers provide better performance when low backpressure is desired, while full-length headers give more consistent performance throughout the engine’s speed range. Coated models often offer longer life due to their protective coating and can last up to twice as long as uncoated models.

It’s also important to consider any emissions restrictions before making a final decision on selections. In addition to emissions restrictions, some states may have additional regulations in place that could affect which type of header you end up purchasing. Be sure to check with your local emissions authority before choosing a header that meets EPA requirements and then proceed with whatever modifications you choose accordingly. It’s also helpful to read customer reviews on specific brands or models before making your purchase to ensure that what works best for them will work best for you too!

What are headers?

Headers are tubular exhaust manifolds designed to fit a specific Chevrolet/GMC application. An exhaust system, including headers, plays an important role in your engine setup and performance. Headers can be customized for any build, and choosing the right set of headers is essential to getting the most out of your Chevy or GMC Sierra truck.

Headers are designed to increase exhaust flow and reduce backpressure from the exhaust system resulting in improved engine performance. They do this by removing or diminishing restrictions from the factory manifold and allowing each cylinder to get the same amount of airflow. This results in a better scavenging effect which helps increase the power output of the engine.

Headers are generally constructed out of mild steel, stainless steel or aluminized steel material, although there are some hi-performance racing headers made from titanium and other materials as well. Each type has its own advantages and drawbacks that should be taken into account when selecting them for your vehicle build. Mild steel headers tend to resist rusting but heat vibrations may cause them to eventually crack over time while stainless steel and aluminized steel offer superior durability but are more expensive than mild steel parts. Racing header material such as titanium will provide exceptional performance but comes with a hefty price tag.

It’s important to note that vehicles built after 1996 may require emissions modifications since they typically have emissions equipment on them including EGR valves and catalytic converters which need special consideration before installing a set of aftermarket headers on them. Additionally, it’s best to check with your local laws regarding emissions equipment before making any modifications since improper installation can potentially lead to fines or even issues with passing state inspection tests in some areas of the country.

Definition and function of headers

Headers are specialized performance exhaust components that improve the flow and power output of your GMC Sierra 2023 engine. The main function of a header is to allow for a smoother and quicker exhaust flow into your Sierra’s collector, resulting in an improved combustion cycle, increased power output and better fuel economy. Additionally, headers also help reduce exhaust temperatures by allowing the exhaust to escape faster. In other words, they give your Sierra 2023 a chance to “breathe” easier at higher RPMs.

Headers generally come in either one or two pieces depending on the particular design you choose. One-piece headers are made as a single continuous piece typically referred to as log style. Two-piece headers consist of two separate pieces that are clamped together during installation typically referred to as header flange style or header elbow style construction. Each particular header design allows for various engine sealing options depending on its intended usage (race vs street). Sealing methods may include gaskets, studs with nuts & washers, arches or even port-matched surfaces where gaskets are eliminated altogether for maximum performance gains potential.

Types of headers

There are three types of headers available for the GMC Sierra 2023: long tube, mid-length and shorty. Each of these choices has its own advantages and disadvantages, depending on the driving style and performance desired.

Long tube headers are typically the most popular choice because they provide the best combination of power and torque when used with a performance exhaust system. Mid-length headers offer improved torque while still allowing room to modify, while shorty headers are more affordable but may not provide an increase in horsepower or torque.

No matter which type of header is selected, it must be properly matched to the exhaust system being used and correctly installed in order to achieve maximum gains in performance. Additionally, these performance parts should be paired with an aftermarket Intake Manifold Upgrade Kit designed specifically for the Sierra 2023 model year. This kit will help ensure a perfect combination of components to maximize power output while also providing improved fuel efficiency.

Materials used to make headers

Headers for GMC Sierra 2023 come in a variety of materials, such as stainless steel, mild steel, and cast iron. Each material has its own benefits:

Stainless Steel: Stainless steel headers are the most popular option for GMC Sierra 2023 models. They are durable, resistant to rust and corrosion, and generally carry a high-quality construction. Additionally, they offer enhanced performance thanks to their improved flow capabilities, longevity, and overall strength.

Mild Steel: Mild steel is less expensive than stainless steel and is easier to work with but lacks the same degree of durability. It’s not as resistant to rust or corrosion as its stainless steel counterparts, but it’s still suitable for less demanding applications where tight spaces or customized modifications would benefit from its malleability.

Cast Iron: Cast iron headers provide excellent heat retention properties and strong structural integrity; however they may be prone to corrosion due abrasive and acidic road conditions. Furthermore they are considerably heavier than other types of headers. Despite this heavier weight cast iron headers can still provide increased performance output from motor released exhaust gases compared to stock designs resulting in enhanced power and torque gains throughout the whole rev range when used in combination with other engine parts such as release valve manifolds or turbochargers for example.

III. Factors to consider when choosing headers for GMC Sierra 2023

When choosing headers for GMC Sierra 2023, a number of factors are important to consider.

First, it is essential to determine the desired performance enhancements for the specific engine. Headers are designed to improve power output, torque, and speed; however, the performance gains vary depending on the specific model.

Second, it is important to understand that headers fitment can be tricky; some may be a tight fit and will require some modifications in order to install properly.

Third, GMC Sierra 2023 owners should also consider their preferred look and sound as different types of headers can achieve different finishes in both aesthetics and sound.

Finally, headers come with varying price points so research into cheaper options can help save money over more expensive alternatives.

With all of these considerations in mind, choosing the right headers for GMC Sierra 2023 becomes an easier task overall.

Compatibility with the vehicle

When shopping for a replacement header for your GMC Sierra 2023, there are some important aspects to consider. It’s essential to make sure that the product you’re considering is compatible with the vehicle before you purchase it. An aftermarket header should fit properly with the rest of your exhaust system and provide a good seal. It should also be robust enough to withstand extreme temperatures, like those in an engine compartment.

Additionally, when looking at different headers, pay close attention to the materials used in their construction; headers made from stainless steel or durable aluminum can last significantly longer than cheaper alternatives. Additionally, ensure that any required installation hardware is included with your purchase – as these items are not always included as part of a standard aftermarket header kit.

Finally, in addition to compatibility and build quality, research other user reviews for their experience with each product – this can be helpful in making an informed buying decision.

Performance gains

If you’re looking to improve the performance of your GMC Sierra 2023, look no further. Upgrading your exhaust system, improving aerodynamics and installing an aftermarket air intake are just a few of the measures you can take in order to get the most out of your GMC Sierra 2023.

Performance Gains: Exhaust System A slightly larger diameter exhaust system increases exhaust flow by reducing back pressure caused by the small diameter factory pipes. Larger diameter systems typically come as complete or modular kits that include pipes, muffler(s), clamps and hanger brackets for easy installation. These kits open up the exhaust pathway for increased engine breathing and higher horsepower gains due to improved efficiency.

Performance Gains: Air Intake System Replacing the stock air filter with an aftermarket unit will greatly increase engine breathing which provides for more power and better fuel economy. Cold air intakes are a popular upgrade, which bring cold air from outside the truck’s engine bay, providing a higher percentage of oxygen that results in more power output. And while intake systems often require extra tuning, they’re usually not overly expensive and are well worth it when it comes to getting improved performance out of your GMC Sierra 2023.

Performance Gains: Aerodynamics Improvements to body lines as well as hoods, fenders and other areas will reduce drag and give better acceleration in addition to enhanced fuel economy due to improved aerodynamic efficiency. Such add-ons help reduce turbulence around the body while allowing more clean airflow over the truck giving you more speed without having to use extra gas during acceleration or cruising speeds.

Construction and design

The GMC Sierra 2023 is available in three cab configurations and two box size options, making it a great choice for those looking for a work or recreational vehicle. The truck body is built from high-strength steel, creating a durable-yet-lightweight frame.

The exterior features an aggressive front grille and stylish body accents to give the Sierra an unmistakable presence. Inside, the rugged interior trims provide comfort and convenience that can be personalized to fit individual style preferences. Advanced safety features are also standard on all models, providing peace of mind no matter where the road takes you.


In conclusion, the GMC Sierra 2023 is a great buy for any driver looking to get an affordable and reliable truck. With its powerful engine options, a variety of cab sizes, and great towing capacity, the GMC Sierra offers a unique blend of performance and style.

In addition, its towing capability can be further enhanced with features like its powerful tires, large cargo bed space with ample storage compartments and automatic transmission. Whether you’re looking for a light-duty or heavy-duty truck for work or off-roading adventures, the GMC Sierra has the perfect combination of features to fit your needs.

For drivers who want a long lasting investment that doesn’t skimp on style, comfort or performance, the GMC Sierra 2023 is an excellent choice.


What type of headers give most horsepower?

Long-tube headers typically give the most horsepower gains compared to other types of headers, as they provide the most efficient flow of exhaust gases.

How much HP can a header add?

The amount of horsepower added by a header depends on various factors such as the type of header, engine size, and modifications. However, it is not uncommon to see horsepower gains of 10-20 hp with the installation of aftermarket headers.

What type of headers are best?

The best type of headers depends on the specific application and personal preferences. Long-tube headers typically provide the most horsepower gains, while shorty headers are easier to install and provide more low-end torque.

Are headers good for your truck?

Headers can improve engine performance by increasing horsepower and torque, improving exhaust flow, and reducing backpressure. However, it is important to choose headers that are designed for your specific truck and to ensure proper installation to avoid potential issues.

Is short or long headers better?

Long-tube headers typically provide the most horsepower gains, while shorty headers are easier to install and provide more low-end torque. The best option depends on personal preferences and specific driving needs.

Do headers increase rpm?

Headers can increase engine RPMs by improving exhaust flow and reducing backpressure. However, the exact increase in RPMs depends on various factors such as the type of headers and engine modifications.

Are headers better than exhaust?

Headers are part of the exhaust system and work in conjunction with the rest of the system. Headers can improve engine performance by increasing horsepower and torque, improving exhaust flow, and reducing backpressure, but the entire exhaust system should be optimized for the best results.

Do headers make your truck faster?

Headers can increase engine performance and provide horsepower gains, which can result in a faster truck. However, the exact speed increase depends on various factors such as the type of headers and engine modifications.

Do headers increase torque?

Headers can increase engine torque by improving exhaust flow and reducing backpressure. However, the exact increase in torque depends on various factors such as the type of headers and engine modifications.

How do I choose the right size header?

Choosing the right size header depends on various factors such as engine size, vehicle weight, and driving style. It is important to choose headers that are designed for your specific truck and to consult with a professional if you are unsure about the correct size.

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