2004 Subaru Impreza Air Flow Sensors

Essential 2004 Subaru Impreza Air Flow Sensors

DENSO – Manifold Absolute Pressure Sensor (Part No.198-0004)

Manifold Absolute Pressure Sensor

from

$297.99
DENSO’s MAP sensors offer leading edge sensing technology which helps controls fuel injection more precisely. They are compact lightweight and designed with fewer connections improving performance and reliability. DENSO’s MAP sensors have high detection accuracy which reduces emissions.

Product Features:
  • OE technology adapted for the aftermarket
  • Reduces emissions, increased performance
  • Delivers the highest reliability and detection accuracy
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Carquest Premium – Manifold Absolute Pressure Sensor (MAP) (Part No.ECC1226)

Manifold Absolute Pressure Sensor (MAP)

from

$162.99
CARQUEST MAP sensors are manufactured with critical OEM components to ensure that your engine runs efficiently to reach the best gas mileage on your vehicle.

Product Features:
  • CARQUEST MAP sensors connectors are exact OE fit to ensure the proper vacuum is maintained to prevent power loss and to minimize internal contamination.
  • CARQUEST MAP sensors utilize high temperature resistant seals. Damaged seals can directly impact the vehicles fuel-to-air ratio, making it less fuel efficient.
  • CARQUEST MAP sensors are 100% individually tested for all product functionalities including proper vacuum seal and electrical output.
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Carquest Premium – Manifold Absolute Pressure Sensor (MAP) (Part No.ECA1593)

Manifold Absolute Pressure Sensor (MAP)

from

$284.99
CARQUEST MAP sensors are manufactured with critical OEM components to ensure that your engine runs efficiently to reach the best gas mileage on your vehicle.

Product Features:
  • CARQUEST MAP sensors connectors are exact OE fit to ensure the proper vacuum is maintained to prevent power loss and to minimize internal contamination.
  • CARQUEST MAP sensors utilize high temperature resistant seals. Damaged seals can directly impact the vehicles fuel-to-air ratio, making it less fuel efficient.
  • CARQUEST MAP sensors are 100% individually tested for all product functionalities including proper vacuum seal and electrical output.
See More

Carquest Premium – Manifold Absolute Pressure Sensor (Part No.ECA1961)

Manifold Absolute Pressure Sensor

from

$297.99
Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
See More

Carquest Premium – Manifold Absolute Pressure Sensor (MAP) (Part No.ECA2431)

Manifold Absolute Pressure Sensor (MAP)

from

$263.99
CARQUEST MAP sensors are manufactured with critical OEM components to ensure that your engine runs efficiently to reach the best gas mileage on your vehicle.

Product Features:
  • CARQUEST MAP sensors connectors are exact OE fit to ensure the proper vacuum is maintained to prevent power loss and to minimize internal contamination.
  • CARQUEST MAP sensors utilize high temperature resistant seals. Damaged seals can directly impact the vehicles fuel-to-air ratio, making it less fuel efficient.
  • CARQUEST MAP sensors are 100% individually tested for all product functionalities including proper vacuum seal and electrical output.
See More

DENSO – Manifold Absolute Pressure Sensor (Part No.198-0005)

Manifold Absolute Pressure Sensor

from

$293.99
DENSO’s MAP sensors offer leading edge sensing technology which helps controls fuel injection more precisely. They are compact lightweight and designed with fewer connections improving performance and reliability. DENSO’s MAP sensors have high detection accuracy which reduces emissions.

Product Features:
  • OE technology adapted for the aftermarket
  • Reduces emissions, increased performance
  • Delivers the highest reliability and detection accuracy
See More

Carquest Premium – Manifold Absolute Pressure Sensor (MAP) (Part No.ECA2269)

Manifold Absolute Pressure Sensor (MAP)

from

$349.99
CARQUEST MAP sensors are manufactured with critical OEM components to ensure that your engine runs efficiently to reach the best gas mileage on your vehicle.

Product Features:
  • CARQUEST MAP sensors connectors are exact OE fit to ensure the proper vacuum is maintained to prevent power loss and to minimize internal contamination.
  • CARQUEST MAP sensors utilize high temperature resistant seals. Damaged seals can directly impact the vehicles fuel-to-air ratio, making it less fuel efficient.
  • CARQUEST MAP sensors are 100% individually tested for all product functionalities including proper vacuum seal and electrical output.
See More

Carquest Premium – Air Charge Temperature Sensor (Part No.ECA1144)

Air Charge Temperature Sensor

from

$76.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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FAE – Intake Air Temperature Sensor (Part No.C6000271665FAE)

Intake Air Temperature Sensor

from

$33.99
The FAE Intake Air Temperature Sensor is an ideal high quality aftermarket replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:
  • Premium aftermarket replacement
  • Provides performance and dependability
  • Manufactured to meet OE specifications
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DENSO – First Time Fit Air Fuel Ratio Sensor (Part No.C5015380866ND)

First Time Fit Air Fuel Ratio Sensor

from

$217.63
DENSO a global supplier to automakers manufactures an OE-equivalent direct fit air fuel ratio sensor that maintains the quality and performance of the Original Equipment it replaces. DENSO continues to innovate with the latest development in air fuel ratio sensors. These components, also known as wide-band oxygen sensors, have a broader response range to provide much finer control of air/fuel mixtures over a greater variety of operating conditions.

Product Features:
  • Tarnish-proof platinum electrodes provides longer life and maintains accuracy
  • Quick-response planar zirconia element can quickly detect oxygen concentration
  • Measures A/F ratios from approximately 12:1 to 19:1
  • Increased performance by mapping a/f ratios throughout rpm range
  • Reduces emissions by keeping the air-fuel mixture at an optimum ratio
See More

DENSO – Wideband Oxygen Sensor: Upstream, 4 Wire, 12.91" Long, Heated, Exact Fit (Part No.234-9138)

Wideband Oxygen Sensor: Upstream, 4 Wire, 12.91" Long, Heated, Exact Fit

from

$228.99
DENSO Air/Fuel Ratio Sensors are manufactured and tested to the strictest OE standards for unparalleled performance. Each component is precision-built for exact replacement and a first time fit. DENSO gives you the right part and the right fit the first t

Product Features:
  • Specifically designed to meet the increasing demands of today’s engines
  • 100% checked for high temperature signal output, air tightness, continuity, and heat resistance for optimal efficiency and performance
  • Coated with aluminum oxide to prevent silicone and lead from contacting the ceramic element and damaging the platinum electrode
  • Double protection cover helps maintain proper unit temperature for quicker response times, which is critical to your vehicle’s fuel efficiency
  • Manufactured with a rugged stainless steel housing and porous PTFE filter to resist corrosion and contamination
See More

Walker – Walker Oxygen Sensor (Part No.C5010402504WKR)

Walker Oxygen Sensor

from

$75.39
Walker Oxygen Sensors are precision made for outstanding performance and manufactured to meet and exceed all original equipment specification and test requirements.

Product Features:
  • Improved Engine Response and Performance
  • Lower Emissions
  • Improved Fuel Economy
  • Longer Sensor Life
  • Meets OEM Specifications Installation Notes: Vehicles equipped with Air Fuel Ratio Sensors may look very similar to the Oxygen Sensor. Please confirm the correct part before ordering and if the connector does not match, do not install
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NTK – Wideband Oxygen Sensor: Air-Fuel Ratio 4 Wire, 31.5" Long, Heated, Direct Fit (Part No.24821)

Wideband Oxygen Sensor: Air-Fuel Ratio 4 Wire, 31.5" Long, Heated, Direct Fit

from

$195.99
NTK is the world’s largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle’s on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. While conventional switching oxygen sensors only switch rich or lean, wideband oxygen (or Air-Fuel Ratio) sensors produce a linear output signal that allows the ECU determine exactly how rich or lean an engine is running and make continuous and precise adjustments of the air-fuel mixture to stay closest to stoichiometric, providing the best possible combustion and fewest emissions. A ceramics company at our core, NTK uses state-of-the art technology enabling complete control of the ceramics used in our wideband oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.

Product Features:
  • OEM QUALITY: NTK is the world’s largest supplier of original equipment oxygen sensors with renowned quality that meets or exceeds OEM specifications
  • PRODUCT ENGINEERING: Based on OE expertise, but specifically engineered for the aftermarket, NTK Oxygen Sensors offer superior OE fit, form, function
  • OE TECHNOLOGY: Upgraded to the latest OE technologies, NTK Oxygen Sensors are designed to reduce OE failures, enhance durability and performance
  • EXTENSIVE TESTING: OE development includes vibration and thermal shock testing. Testing during manufacturing guarantees quality and reliability
  • EASY INSTALLATION: NTK Oxygen Sensors are equipped with OE specified, water-resistant connectors and harness accessory hardware for easy installation
  • ADVANCED CERAMIC SENSOR ELEMENT: 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects against element poisoning
  • NTK ADVANTAGE: Superior dual-coated platinum interface and thinner ceramic element produces fastest light off and response times with best durability
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Walker – Walker Air Fuel Ratio Sensor (Part No.C5015380864WKR)

Walker Air Fuel Ratio Sensor

from

$210.88
Walker manufactures an OE-equivalent direct fit air fuel ratio sensor that maintains the quality and performance of the Original Equipment it replaces.

Product Features:
  • Tarnish-proof platinum electrodes
  • Base ceramic probe of Zirconium and Yttrium
  • Patented Platinum Power Grid
  • Fine particle filter Installation Notes: Vehicles equipped with Air Fuel Ratio Sensors may look very similar to the Oxygen Sensor. Please confirm the correct part before ordering and if the connector does not match, do not install.
See More

DENSO – Wideband Oxygen Sensor: Upstream, 4 Wire, 31.50" Long, Heated, Exact Fit (Part No.234-9011)

Wideband Oxygen Sensor: Upstream, 4 Wire, 31.50" Long, Heated, Exact Fit

from

$243.99
DENSO Air/Fuel Ratio Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance.; Each component is precision-built for exact replacement+ and a first time fit.; DENSO gives you the right part and the right fit+ the first time.

Product Features:
  • Specifically designed to meet the increasing demands of today’s engines
  • 100% checked for high temperature signal output, air tightness, continuity, and heat resistance for optimal efficiency and performance
  • Coated with aluminum oxide to prevent silicone and lead from contacting the ceramic element and damaging the platinum electrode
  • Double protection cover helps maintain proper unit temperature for quicker response times, which is critical to your vehicle’s fuel efficiency
  • Manufactured with a rugged stainless steel housing and porous PTFE filter to resist corrosion and contamination
See More

DENSO – First Time Fit Air Fuel Ratio Sensor (Part No.C5015340566ND)

First Time Fit Air Fuel Ratio Sensor

from

$237.72
DENSO a global supplier to automakers manufactures an OE-equivalent direct fit air fuel ratio sensor that maintains the quality and performance of the Original Equipment it replaces. DENSO continues to innovate with the latest development in air fuel ratio sensors. These components, also known as wide-band oxygen sensors, have a broader response range to provide much finer control of air/fuel mixtures over a greater variety of operating conditions.

Product Features:
  • Tarnish-proof platinum electrodes provides longer life and maintains accuracy
  • Quick-response planar zirconia element can quickly detect oxygen concentration
  • Measures A/F ratios from approximately 12:1 to 19:1
  • Increased performance by mapping a/f ratios throughout rpm range
  • Reduces emissions by keeping the air-fuel mixture at an optimum ratio
See More

DENSO – Wideband Oxygen Sensor: Upstream, 5 Wire, 20.28" Long, Heated, Exact Fit (Part No.234-5003)

Wideband Oxygen Sensor: Upstream, 5 Wire, 20.28" Long, Heated, Exact Fit

from

$175.99
DENSO Air/Fuel Ratio Sensors are manufactured and tested to the strictest OE standards for unparalleled performance. Each component is precision-built for exact replacement and a first time fit. DENSO gives you the right part and the right fit the first t

Product Features:
  • Specifically designed to meet the increasing demands of today’s engines
  • 100% checked for high temperature signal output, air tightness, continuity, and heat resistance for optimal efficiency and performance
  • Coated with aluminum oxide to prevent silicone and lead from contacting the ceramic element and damaging the platinum electrode
  • Double protection cover helps maintain proper unit temperature for quicker response times, which is critical to your vehicle’s fuel efficiency
  • Manufactured with a rugged stainless steel housing and porous PTFE filter to resist corrosion and contamination
See More

Bosch – Air Fuel Ratio Sensor (Part No.C5015303465BOS)

Air Fuel Ratio Sensor

from

$248.33
Bosch a global supplier to automakers manufactures an OE-equivalent direct fit air fuel ratio sensor that maintains the quality and performance of the Original Equipment it replaces. Bosch Wideband Air/Fuel ratio sensors utilize a more sophisticated sensing element that enables them to produce a precise output in proportion to the air/fuel ratio. As a result, a wideband A/F sensor measures exhaust gas oxygen accurately from as rich as 9.0:1 to as lean as free air. The use of the Wideband A/F sensors is growing rapidly as original equipment in vehicles and in high-performance specialty markets.

Product Features:
  • Tarnish-proof platinum electrodes
  • Base ceramic probe of Zirconium and Yttrium
  • Patented Platinum Power Grid
  • Fine particle filter Installation Notes: Vehicles equipped with Air Fuel Ratio Sensors may look very similar to the Oxygen Sensor. Please confirm the correct part before ordering and if the connector does not match, do not install.
See More

Carquest Premium – Ambient Air Temperature Sensor (Part No.WTA1299)

Ambient Air Temperature Sensor

from

$51.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
See More

Carquest Premium – Ambient Air Temperature Sensor (Part No.WTA1334)

Ambient Air Temperature Sensor

from

$11.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
See More

Carquest Premium – Ambient Air Temperature Sensor (Part No.WTA1548)

Ambient Air Temperature Sensor

from

$33.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
See More

2004 Subaru Impreza Air Flow Sensors

Maybe you’re in the middle of a full rebuild of that 2004 Subaru Impreza. Maybe you just need a couple of Air Flow Sensors. Either way, Advance Auto Parts has 12 different Air Flow Sensors in our inventory ranging from $33.99 to $284.99. That means you can find the exact parts or products you need to keep that 2004 Subaru Impreza running smoothly.

Air Flow Sensors are only as good as their brand. We stock 5 different brands to make sure you have plenty of trusted parts to choose from for your 2004 Subaru Impreza. DENSO, Carquest Premium, and Bosch are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Air Flow Sensors for your 2004 Subaru Impreza, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 41 reviews in this category, some of the top rated parts include Intake Air Temperature Sensor with 2.0 stars.

So if you’re in the market for aftermarket Air Flow Sensors to keep your 2004 Subaru Impreza rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Air Flow Sensors Brands To Make Your 2004 Subaru Impreza Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 2004 Subaru Impreza demands trusted brand parts and products to keep it running. Many trusted brands of Air Flow Sensors make up Advance Auto Parts’ inventory, and all are ready to help make your Impreza the best it can be. Be sure to browse some of our top Air Flow Sensors brands and parts.

FAQs for 2004 Subaru Impreza Air Flow Sensors

What are the most purchased Air Flow Sensors for the 2004 Subaru Impreza?

Out of 12 Air Flow Sensors for the 2004 Subaru Impreza, the most popular in our inventory are:
Wideband Oxygen Sensor: Upstream, 4 Wire, 31.50" Long, Heated, Exact Fit
from $243.99
This product is not rated
Wideband Oxygen Sensor: Upstream, 4 Wire, 31.50" Long, Heated, Exact Fit
Air- Fuel Ratio Sensors
Manifold Absolute Pressure Sensor
from $281.99
This product is not rated
Manifold Absolute Pressure Sensor
Manifold Air Pressure Sensors
Bosch Oxygen Sensor
from $268.94
This product is not rated
Bosch Oxygen Sensor
Air- Fuel Ratio Sensors

What are the top-rated 2004 Subaru Impreza Air Flow Sensors?

Top-rated Air Flow Sensors for your 2004 Subaru Impreza based on customer reviews/ratings are:
Intake Air Temperature Sensor
from $33.99
(1)
Intake Air Temperature Sensor
“As the title says. Bought this brand new 6 months ago. And already having idle issues again. Spent hundreds befor the computer finally threw a code. A”