Exhaust Header for 1997-2005 Subaru Impreza/Legacy 2.5L Racing NON-turbo

Exhaust Header for 1997-2005 Subaru Impreza 2.5L Racing NON-turbo Flashark

Exhaust Header for 1997-2005 Subaru Impreza 2.5L Racing Flashark

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Exhaust Header for 1997-2005 Subaru Impreza/Legacy 2.5L Racing NON-turbo

Name: Exhaust Header for 1997-2005 Subaru Impreza/Legacy 2.5L Racing NON-turbo
Brand: Flashark
SKU: FLES08351
Price: 159.99 USD
Availability: InStock
Rating: 4.79 (14 reviews)

SKU: FLES08351

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Exhaust Headers for 1997-2005 Subaru Impreza RS/TS/Outback & Legacy GT 2.5L Engines – Racing NON-Turbo

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Boost the performance of your 1997-2005 Subaru Impreza 2.5L with this high-performance Exhaust Header, specifically designed for non-turbo models. Engineered for racing and high-performance driving, this exhaust header enhances horsepower, torque, and exhaust flow by reducing back pressure. Made from durable stainless steel with a sleek mirror-polish finish, it not only improves engine efficiency but also adds an aggressive, throaty exhaust sound that will make your Impreza stand out on the road or track. Easy to install with a direct bolt-on design, this exhaust header is the perfect upgrade for your Impreza’s performance needs.

Specifications:

Brand Name: FLASHARK
Certificate: ISO9001:2000
Application: Automobile Exhaust Header
Material: Stainless Steel
Surface: Mirror Polish
Model: EH28062
Header Inlet/Outlet Size (IN): 1.50"/ 2.25"
Increase 15-25 HP

What does the Exhaust Header do？

Upgrading your 1997-2005 Subaru Impreza or Subaru Legacy GT with this performance Exhaust Header will instantly enhance your vehicle's performance and driving experience. Designed specifically for non-turbo 2.5L models, this exhaust header helps to maximize exhaust flow, reduce back pressure, and increase horsepower by up to 20 HP and torque, giving your Subaru the muscle car sound and performance you’ve always wanted.

Replacing your factory exhaust system with this high-performance header will also help improve fuel efficiency. With an estimated 0.5 mpg improvement in fuel economy, you’ll save money at the pump over time. For example, if you drive 15,000 miles per year and gas costs $3 per gallon, you'll save around $85 annually on gas. Over five years, that’s enough to almost pay for the cost of a full cat-back exhaust system!

Whether you're driving your Impreza RS, Outback Sport, or Legacy GT, this exhaust header upgrade will elevate your car’s sound and performance while being cost-effective in the long run.

Exhaust Header VS Manifold, which is the better choice?

Upgrading to Flashark exhaust headers for your 1997-2005 Subaru Impreza 2.5L or Legacy GT improves both performance and sound. Unlike the stock exhaust manifolds, which are made of thick iron and create back pressure, exhaust headers are made of lightweight stainless steel and feature individual tubes for each cylinder. This design helps to reduce back pressure, allowing the exhaust gases to flow more freely and increasing horsepower by up to 20 HP and torque.

In addition to performance gains, these headers give your vehicle a more aggressive exhaust sound. Installation is easy with the direct bolt-on design—no modifications needed.

If you’re driving a Subaru Impreza RS, Outback Sport, or Legacy GT, upgrading to FLASHARK Exhaust Headers will deliver noticeable improvements in both performance and exhaust note, all while being simple to install.

Fitment & Compatibility

⚠️ CRITICAL FITMENT RULE (MUST READ BEFORE PURCHASE)

✅ Verified Fitment

Brand	Model	Year Range	Full Compatible Specs
Subaru	Impreza RS	1998-2001	2-Door Coupe Body Style; Factory-Equipped 2.5L DOHC Boxer 4-Cylinder Engine
Subaru	Impreza RS	2001-2005	4-Door Sedan Body Style; Factory-Equipped 2.5L SOHC Boxer 4-Cylinder Engine
Subaru	Impreza RS	2005	4-Door Wagon Body Style; Factory-Equipped 2.5L SOHC Boxer 4-Cylinder Engine
Subaru	Impreza TS	2002-2004	4-Door Wagon Body Style; Factory-Equipped 2.5L SOHC Boxer 4-Cylinder Engine
Subaru	Impreza Outback / Outback Sport	2002-2005	4-Door Wagon Body Style; Factory-Equipped 2.5L SOHC Boxer 4-Cylinder Engine
Subaru	Legacy GT	1997-2005	4-Door Wagon Body Style; Factory-Equipped 2.5L Boxer 4-Cylinder Engine; WITHOUT Factory Oil Cooler ONLY

FAQ - Flashark Subaru 2.5L Non-Turbo Exhaust Headers

Q1: Will these headers fit my Subaru Impreza RS 2.5L?

A1: Yes, these Flashark exhaust headers are specifically engineered for the 1997-2005 Subaru Impreza RS, TS, and Outback Sport models with the 2.5L Naturally Aspirated (Non-Turbo) engine. They provide a precise fit for the EJ25 series engines found in these models.

Q2: Will I get the classic "Subie Rumble" with this header?

A2: Absolutely. This racing header features an Unequal Length (UEL) design, which is the key to achieving that signature deep, throaty Boxer engine sound. By replacing the restrictive stock manifold, your Impreza or Legacy will have the aggressive rumble typically heard on WRX models.

Q3: How much horsepower can I really gain from this upgrade?

A3: Most users see an increase of 15 to 25 Horsepower and a significant boost in torque. By reducing back pressure and optimizing exhaust flow, the engine can breathe more efficiently, resulting in better throttle response and mid-range power.

Q4: Is this header compatible with the Subaru Legacy GT 2.5L Non-Turbo?

A4: Yes, it is compatible with the 1997-2005 Subaru Legacy GT/Outback with the 2.5L non-turbo engine. It is an excellent performance upgrade for Legacy owners looking to improve both the exhaust note and engine efficiency.

Q5: Does this header require welding or modifications for installation?

A5: No welding is required. This product features a direct bolt-on design, meaning it connects directly to your existing cylinder heads and downpipe using factory-style mounting points. It is designed for straightforward installation.

Q6: What material is used, and will it rust over time?

A6: The headers are made of high-quality T-304 stainless steel with a mirror-polish finish. Unlike the stock cast-iron manifolds that rust and crack, stainless steel is highly resistant to corrosion and extreme heat, ensuring long-term durability on the road or track.

Q7: Will installing this header trigger a Check Engine Light (CEL)?

A7: These headers include pre-drilled bungs for your O2 sensors. In most cases, if the sensors are installed correctly, it will not trigger a CEL. However, as with any high-flow exhaust modification, some vehicles may require an O2 spacer or a tune for optimal ECU performance.

Q8: How does this header improve fuel economy?

A8: By reducing the energy your engine wastes pushing exhaust gases through a restrictive stock manifold, the engine operates more efficiently. This can lead to an estimated 0.5 mpg improvement, potentially saving you over $80 annually depending on your mileage.

Q9: Why should I choose an exhaust header over the stock manifold?

A9: Stock manifolds are heavy cast iron and built for noise suppression, which creates massive back pressure. Flashark stainless steel headers are lightweight, use individual tubes for each cylinder, and utilize mandrel-bent tubing to maximize exhaust velocity and scavenging.

Q10: Does the package include gaskets and hardware?

A10: Yes, the kit typically comes with the necessary gaskets and bolts required for a complete installation. We recommend using the provided hardware to ensure a leak-free seal between the header and the engine block.

Q11: Is this header legal for street use?

A11: This is sold as a Racing Header intended for off-road or track use. Emissions laws vary by state/country (such as California CARB regulations), so please check your local regulations before installing it for street use.

Q12: What is the inlet and outlet size for the EH28062 model?

A12: The inlet size is 1.50 inches at the head flange, and the outlet size is 2.25 inches. This diameter is optimized for 2.5L non-turbo engines to maintain high exhaust gas velocity without losing low-end torque.

Q13: Do I need to tune my car after installing these headers?

A13: While a tune is not strictly necessary for the car to run, a custom tune is highly recommended to maximize the 15-25 HP gains. A tune will optimize the air-fuel ratio to match the increased exhaust flow, providing the best possible performance.