2004 Subaru Impreza Performance and Racing Products

Essential 2004 Subaru Impreza Performance and Racing Products

Energy Suspension – Sway Bar Bushing Set (Part No.19.5101R)

Sway Bar Bushing Set

from

$24.99
Energy Suspension performance polyurethane sway bar bushings and end links offer the greatest improvement in performance among all the products Energy offers. They make a vehicle’s sway bar system much more effective like adding a larger, higher performance sway bar! Economy, increased efficiency, and easy installation are just some of the reasons these products are so popular. Made of Hyper-Flex polyurethane that lasts much longer than O.E.M. rubber bushings.

Product Features:
  • Allows Sway Bar System to Work At 100% Efficiency
  • Zerk Type Fittings
  • Allows for Periodic Greasing
  • Lasts Much Longer Than OEM Rubber Bushings
  • Handling Characteristics Improve Dramatically
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Flowmaster Inc. – 40 Series Muffler, 2.25in Offset Inlet 2.25in Center Outlet, Non-Reversible, Aggressive Sound (Part No.8042441)

40 Series Muffler, 2.25in Offset Inlet 2.25in Center Outlet, Non-Reversible, Aggressive Sound

from

$123.99
The Original 40 series muffler delivers an aggressive exterior and interior tone. If you’re looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.
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Flowmaster Inc. – Super 44 Series Muffler, 2.25in Offset Inlet 2.25in Center Outlet, Non-Reversible, Aggressive Sound (Part No.842446)

Super 44 Series Muffler, 2.25in Offset Inlet 2.25in Center Outlet, Non-Reversible, Aggressive Sound

from

$126.99
Flowmaster’s Super 44 muffler uses the same Delta Flow technology found in our larger Super 40 mufflers. The Super 44 delivers a rich powerful tone and are the most aggressive, highest performing street muffler we’ve ever built in a four inch case. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.
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Flowmaster Inc. – 40 Series Muffler, 2.25in Offset Inlet 2.25in Center Outlet, Non-Reversible, Aggressive Sound (Part No.942441)

40 Series Muffler, 2.25in Offset Inlet 2.25in Center Outlet, Non-Reversible, Aggressive Sound

from

$133.99
This two chamber design incorporates Flowmaster’s patented Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over Original 40 series. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
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K&N – Cold Air Intake: Adds Up To 5 Horsepower, With Million Mile Air Filter (Part No.69-8010TTK)

Cold Air Intake: Adds Up To 5 Horsepower, With Million Mile Air Filter

from

$399.99
K&N air intake systems are engineered for increased performance, outstanding durability, and sleek aesthetics – and are available in an assortment of finishes and powder coatings. K&N’s state-of-the-art High-Flow Air Filter helps to shield your engine from contaminants, while a meticulously engineered aerodynamic tube design contributes to a guaranteed increase in horsepower and torque. K&N air intake systems are designed to improve acceleration, towing, and throttle response while providing world class protection for your engine. Our intakes are dyno-tested and provide up to 50% more airflow compared to OEM intake systems. K&N intakes are easy to install and maintain with air filter cleaning required only every 100,000 miles.

Product Features:
  • GUARANTEED INCREASE IN HORSEPOWER: Dyno-tested with up to 50% more airflow than restrictive factory box air filter and intake tube
  • BETTER TOWING: Improves acceleration and uphill performance when towing by improving throttle response.
  • IMPROVED ENGINE SOUND: Hear the power under the hood.
  • WORLD CLASS PROTECTION: Pushing the limits of engine protection by protecting your engine from harmful contaminants
  • EASY MAINTENANCE: No filter cleaning required for up to 100,000 miles
  • EASY TO INSTALL: Bolt-on power in less than an hour with basic hand tools. K&N air intake systems are one of the easiest ways to guarantee an increase in horsepower.
  • DYNO TESTED: Dyno-tested for a guaranteed increase in horsepower and acceleration with no ECU tune required
  • HIGH QUALITY: Made in America.
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aFe POWER – Takeda Intake System (Part No.TR-4302P)

Takeda Intake System

from

$346.99
Takeda Intake System

K&N – Cold Air Intake: Adds Up To 16 Horsepower, With Million Mile Air Filter (Part No.69-8001TS)

Cold Air Intake: Adds Up To 16 Horsepower, With Million Mile Air Filter

from

$399.99
The K&N 69-8001TS Typhoon air intake system is a free-flowing, mandrel-bent aluminum tube air induction system designed to fit some Subaru Impreza WRX Turbo and WRX STi Turbo models. The restrictive factory air filter and air intake housing are replaced by the K&N Typhoon air intake which is designed to dramatically reduce air flow restriction as it smoothes and straightens air flow. This allows your engine to inhale a larger amount of air than the factory air intake. More air means more usable power and acceleration throughout the engine’s RPM range. The 69-8001TS air intake comes with an ultra-lightweight carbon fiber topped K&N high-flow air filter and a heat shield that installs into the previous air box space. Air is directed through the intake tube into the engine’s intake duct for a guaranteed power gain. The intake tube has an attractive silver powder-coat finish that’s made to last and it accommodates the factory mass air sensor. The oversized cone shaped air filter can be used for up to 100,000 miles before servicing is needed depending on driving conditions. This air intake is relatively easy to install usually in 90 minutes or less using existing factory mounting points. The tools needed are a screwdriver and ratchet set. Some Typhoon air intakes are not legal for sale or use in California and other states adopting California emission standards while others are CARB exempt and 50 state legal. Check the K&N catalog or website for vehicle applications and specific CARB status for each vehicle and air intake.

Product Features:
  • GUARANTEED INCREASE IN HORSEPOWER: Dyno-tested with up to 50% more airflow than restrictive factory box air filter and intake tube
  • BETTER TOWING: Improves acceleration and uphill performance when towing by improving throttle response.
  • IMPROVED ENGINE SOUND: Hear the power under the hood.
  • WORLD CLASS PROTECTION: Pushing the limits of engine protection by protecting your engine from harmful contaminants
  • EASY MAINTENANCE: No filter cleaning required for up to 100,000 miles
  • EASY TO INSTALL: Bolt-on power in less than an hour with basic hand tools. K&N air intake systems are one of the easiest ways to guarantee an increase in horsepower.
  • DYNO TESTED: Dyno-tested for a guaranteed increase in horsepower and acceleration with no ECU tune required
  • HIGH QUALITY: Made in America.
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NOS/Nitrous Oxide Systems – Import Nitrous System Dry Design (Part No.05122NOS)

Import Nitrous System Dry Design

from

$1130.00
Import Nitrous System Dry Design

K&N – Oil Filter (Part No.HP-1015)

Oil Filter

from

$20.99
Automotive oil filter

Product Features:
  • OE replacement oil filters for most cars, trucks, SUVs, motorcycles and ATVs
  • 1″ (automotive) or 17 mm (motorcycle) exposed nut designed for easy removal
  • Heavy-duty construction, high flow rates and outstanding oil filtration
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Energy Suspension – SwyBarBshKt (Part No.19.5104R)

SwyBarBshKt

from

$40.99
SwyBarBshKt

Energy Suspension – Sway Bar Bushing Set (Part No.19.5102G)

Sway Bar Bushing Set

from

$42.99
Energy Suspension performance polyurethane sway bar bushings and end links offer the greatest improvement in performance among all the products Energy offers. They make a vehicle’s sway bar system much more effective like adding a larger, higher performance sway bar! Economy, increased efficiency, and easy installation are just some of the reasons these products are so popular. Made of Hyper-Flex polyurethane that lasts much longer than O.E.M. rubber bushings.

Product Features:
  • Allows Sway Bar System to Work At 100% Efficiency
  • Zerk Type Fittings
  • Allows for Periodic Greasing
  • Lasts Much Longer Than OEM Rubber Bushings
  • Handling Characteristics Improve Dramatically
See More

K&N – Cold Air Intake: Guaranteed To Increase Horsepower, With Million Mile Air Filter (Part No.57-0626)

Cold Air Intake: Guaranteed To Increase Horsepower, With Million Mile Air Filter

from

$249.99
K&N 57i Series induction kits are specifically designed for each different vehicle and will free your car from the size restriction that comes with the factory air box. These economical kits can take a variety of different forms based on vehicle characteristics and available space under the hood. Each kit is designed to provide power throughout the RPM range. The extra surface area of these open-air air filters provide even more airflow at lower restriction than a K&N O/E replacement filter which is limited to the size of the factory air box. The larger air filter also captures and holds more dirt increasing its service life before a cleaning is required (up to 100,000 miles). The filter is either directly attached to the engine carburetor or throttle body or indirectly through a tube assembly running from the filter to the engine. All adapters are made from high quality materials such as steel, aluminum, silicon or reinforced nylon to ensure long life. 57i Intakes are not legal for use in California and other US States adopting California emission standards.

Product Features:
  • GUARANTEED INCREASE IN HORSEPOWER: Dyno-tested with up to 50% more airflow than restrictive factory box air filter and intake tube
  • BETTER TOWING: Improves acceleration and uphill performance when towing by improving throttle response.
  • IMPROVED ENGINE SOUND: Hear the power under the hood.
  • WORLD CLASS PROTECTION: Pushing the limits of engine protection by protecting your engine from harmful contaminants
  • EASY MAINTENANCE: No filter cleaning required for up to 100,000 miles
  • EASY TO INSTALL: Bolt-on power in less than an hour with basic hand tools. K&N air intake systems are one of the easiest ways to guarantee an increase in horsepower.
  • DYNO TESTED: Dyno-tested for a guaranteed increase in horsepower and acceleration with no ECU tune required
  • HIGH QUALITY: Made in America.
See More

K&N – Cold Air Intake: Adds Up To 14 Horsepower, With Million Mile Air Filter (Part No.69-8004TTK)

Cold Air Intake: Adds Up To 14 Horsepower, With Million Mile Air Filter

from

$349.99
The K&N 69-8004TTK Typhoon air intake system is a free-flowing, mandrel-bent aluminum tube air induction system designed to fit some Subaru Impreza and WRX models. The restrictive factory air filter and air intake housing are replaced by the K&N Typhoon air intake which is designed to dramatically reduce air flow restriction as it smoothes and straightens air flow. This allows your engine to inhale a larger amount of air than the factory air intake. More air means more usable power and acceleration throughout the engine’s RPM range. The 69-8004TTK air intake comes with an ultra-lightweight carbon fiber topped K&N high-flow air filter and a heat shield that installs into the previous air box space. Air is directed through the intake tube into the engine’s throttle body for a guaranteed power gain. The intake tube has an attractive textured black finish that’s made to last and accommodates the factory mass air sensor. The oversized cone shaped air filter can be used for up to 100,000 miles before servicing is needed depending on driving conditions. This air intake is relatively easy to install usually in 90 minutes or less using existing factory mounting points. The tools needed are a couple of screwdrivers, a ratchet set and some Allen wrenches. Some Typhoon air intakes are not legal for sale or use in California and other states adopting California emission standards while others are CARB exempt and 50 state legal. Check the K&N catalog or website for vehicle applications and specific CARB status for each vehicle and air intake.

Product Features:
  • GUARANTEED INCREASE IN HORSEPOWER: Dyno-tested with up to 50% more airflow than restrictive factory box air filter and intake tube
  • BETTER TOWING: Improves acceleration and uphill performance when towing by improving throttle response.
  • IMPROVED ENGINE SOUND: Hear the power under the hood.
  • WORLD CLASS PROTECTION: Pushing the limits of engine protection by protecting your engine from harmful contaminants
  • EASY MAINTENANCE: No filter cleaning required for up to 100,000 miles
  • EASY TO INSTALL: Bolt-on power in less than an hour with basic hand tools. K&N air intake systems are one of the easiest ways to guarantee an increase in horsepower.
  • DYNO TESTED: Dyno-tested for a guaranteed increase in horsepower and acceleration with no ECU tune required
  • HIGH QUALITY: Made in America.
See More

Energy Suspension – Hyper-Flex System (Part No.19.18101R)

Hyper-Flex System

from

$254.99
Product Features:
  • Incredible Improvement in Control
  • Maintains Proper Caster and Camber Alignment
  • Increase in Handling and Control
  • Greatly Reduce Wheel Hop on Quick Acceleration
  • Even Braking Control is Improved
  • Better Suspension Stability
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Energy Suspension – Hyper-Flex System (Part No.19.18101G)

Hyper-Flex System

from

$242.99
Product Features:
  • Incredible Improvement in Control
  • Maintains Proper Caster and Camber Alignment
  • Increase in Handling and Control
  • Greatly Reduce Wheel Hop on Quick Acceleration
  • Even Braking Control is Improved
  • Better Suspension Stability
See More

Energy Suspension – Trailing Arm Bushing Set (Part No.19.7101G)

Trailing Arm Bushing Set

from

$76.99
Product Features:
  • Help Maintain Proper Rear Toe and Caster
  • During High Performance Driving Conditions
  • Important When Using Larger Wheels/Tires
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Energy Suspension – Control Arm Bushing Set (Part No.19.3101R)

Control Arm Bushing Set

from

$96.99
For both front and rear of suspensions on cars, trucks and SUVs. Maintains proper alignment under extreme conditions on and off-road and during competition. Improves vehicle handling, cornering and overall control. Full floating for smoother operation. Made of Energy’s Hyper-Flex performance polyurethane to add performance and durability.

Product Features:
  • Maintains Better Alignment While Driving
  • Full Floating and Non Binding
  • Fits Into the Remaining Stock Control Arms
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Energy Suspension – Trailing Arm Bushing Set (Part No.19.7101R)

Trailing Arm Bushing Set

from

$76.99
Product Features:
  • Help Maintain Proper Rear Toe and Caster
  • During High Performance Driving Conditions
  • Important When Using Larger Wheels/Tires
See More

Energy Suspension – Control Arm Bushing Set (Part No.19.3101G)

Control Arm Bushing Set

from

$96.99
For both front and rear of suspensions on cars, trucks and SUVs. Maintains proper alignment under extreme conditions on and off-road and during competition. Improves vehicle handling, cornering and overall control. Full floating for smoother operation. Made of Energy’s Hyper-Flex performance polyurethane to add performance and durability.

Product Features:
  • Maintains Better Alignment While Driving
  • Full Floating and Non Binding
  • Fits Into the Remaining Stock Control Arms
See More

2004 Subaru Impreza Performance and Racing Products

You count on your 2004 Subaru Impreza to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Performance and Racing Products. With 19 Performance and Racing Products ranging in price from $20.99 to $1,130.00, you’re sure to find everything you need for your 2004 Subaru Impreza.

Brands matter. If you want to shop a specific Performance and Racing Products brand, we stock 5 different brands like Energy Suspension, Flowmaster Inc., and K&N. 2004 Subaru Impreza Performance and Racing Products start as low as $20.99!

One of the best ways to find top quality OEM or aftermarket Performance and Racing Products is by asking professionals. Short of that, you can shop with confidence thanks to our 29 extensive product reviews on 2004 Subaru Impreza Performance and Racing Products.

Did we mention you can order your Performance and Racing Products from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Performance and Racing Products inventory for your 2004 Subaru Impreza below to get started!

Top-Rated Performance and Racing Products Brands For Your 2004 Subaru Impreza

Trusted Performance and Racing Products OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 2004 Subaru Impreza running right for years to come. In our inventory you’ll find brands like Energy Suspension, Flowmaster Inc., K&N, and even more.

Popular K&N Performance and Racing Products

You’ll find popular K&N brand products across Performance Air Intake Kits. All are waiting to get your 2004 Subaru Impreza back on the road. Some of the top-rated K&N products in these categories are:

Top-Rated Flowmaster Inc. Performance and Racing Products


If Flowmaster Inc. are what you’re looking for, our inventory holds plenty. We stock Flowmaster Inc. brand Performance and Racing Products for your 2004 Subaru Impreza, and some of our most reviewed Flowmaster Inc. parts include:

FAQs for 2004 Subaru Impreza Performance and Racing Products

What are the most purchased Performance and Racing Products for the 2004 Subaru Impreza?

Out of 19 Performance and Racing Products for the 2004 Subaru Impreza, the most popular in our inventory are:
40 Series Muffler, 2.25in Offset Inlet 2.25in Center Outlet, Non-Reversible, Aggressive Sound
from $123.99
This product is not rated
40 Series Muffler, 2.25in Offset Inlet 2.25in Center Outlet, Non-Reversible, Aggressive Sound
Performance Exhaust Mufflers
Control Arm Bushing Set
from $96.99
This product is not rated
Control Arm Bushing Set
Performance Upper Performance Control Arm Bushings
Trailing Arm Bushing Set
from $76.99
This product is not rated
Trailing Arm Bushing Set
Performance Upper Performance Control Arm Bushings