Make/Model
Close X
Search by Make / Model

2004 Subaru Impreza Oxygen Sensor

› Change Part / Category
› Change Vehicle
Denso Oxygen Sensor - Rear
Click to Enlarge
Denso W0133-1654566
Oxygen Sensor
Close
Loading Reviews...
Retail Price:
$189.95
Sale Price: $66.48
(1) In Stock
Part Number: W0133-1654566
Notes: OE Connector
Features:
  • SUPERIOR DESIGN - Maximizes engine performance and fuel efficiency while reducing harmful emissions.
  • DOUBLE-PROTECTION COVER - Maintains proper unit temperature for quicker response times and protects the ceramic element against silicone and lead poisoning.
  • ALUMINUM-OXIDE TRAP LAYER - Keeps silicone and lead outside the ceramic element through DENSO's exclusive design, preventing damage to the platinum electrode.
  • STAINLESS STEEL HOUSING - Resists corrosion and contamination with
Position: Rear
Condition: New

Shipping Options:
Ground, Overnight, 2 Day
This Product Fits the Following: Warehouse: A
Vehicle Engine Transmission
• 2004 Subaru Impreza 2.0L H4  Automatic 
• 2004 Subaru Impreza 2.0L H4  Standard 
• 2004 Subaru Impreza 2.5L H4 Turbocharged   

Denso Oxygen Sensor - Rear
Click to Enlarge
(Read reviews)
Retail Price:
$199.95
Sale Price: $102.48
(1) In Stock
Part Number: W0133-1608576
Notes: OE Connector
Features:
  • SUPERIOR DESIGN - Maximizes engine performance and fuel efficiency while reducing harmful emissions.
  • DOUBLE-PROTECTION COVER - Maintains proper unit temperature for quicker response times and protects the ceramic element against silicone and lead poisoning.
  • ALUMINUM-OXIDE TRAP LAYER - Keeps silicone and lead outside the ceramic element through DENSO's exclusive design, preventing damage to the platinum electrode.
  • STAINLESS STEEL HOUSING - Resists corrosion and contamination with
Position: Rear
Condition: New

Shipping Options:
Ground, Overnight, 2 Day
This Product Fits the Following: Warehouse: A
Vehicle Engine
• 2004 Subaru Impreza Naturally Aspirated 

Denso Oxygen Sensor - Downstream
Click to Enlarge
Denso 234-4732
Oxygen Sensor
Close
Loading Reviews...
Sale Price: $50.33
(>35) In Stock
Part Number: 18021-05051701
Notes: OE Style -- DENSO is the O.E. Manufacturer / Oxygen Sensor
Position: Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2004 Subaru Impreza 2.0L H4 
• 2004 Subaru Impreza 2.5L H4 Turbocharged 

Denso Oxygen Sensor - Downstream
Click to Enlarge
Denso 234-4706
Oxygen Sensor
Close
Loading Reviews...
Sale Price: $65.33
(>35) In Stock
Part Number: 18021-05051691
Notes: OE Style -- O.E. Quality Replacement Sensor
Features:
  • Designed to detect the amount of oxygen in the exhaust system
  • Constructed from high quality material
  • Features double protection layer, aluminum oxide trap layer, PTFE filter and stainless steel housing
  • Manufactured with precision to meet OE standards
  • Easy installation
Position: Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2004 Subaru Impreza 2.5L H4 Naturally Aspirated 

Denso Oxygen Sensor - Downstream
Click to Enlarge
Denso 234-4700
Oxygen Sensor
Close
Loading Reviews...
Sale Price: $42.33
(>35) In Stock
Part Number: 18021-05051685
Notes: Universal -- O.E. Quality Universal Replacement Sensor
Features:
  • Manufactured to the highest O.E. quality, guaranteed to fit right
  • Aluminum oxide trap, this extra layer helps to protect from silicone and lead poisoning
  • Stainless steel housing and porous Teflon filter all contribute to make a long life
  • Improved engine performance and greater fuel efficiency
  • Prevents premature sensor failure
Position: Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2004 Subaru Impreza 2.5L H4 Naturally Aspirated 

Bosch Oxygen Sensor - Front
Click to Enlarge
(Read reviews)
Retail Price:
$199.95
Sale Price: $111.48
(2) In Stock
Part Number: W0133-1653795
Notes: OE Connector
Position: Front
Condition: New

Shipping Options:
Ground, Overnight, 2 Day
This Product Fits the Following: Warehouse: A
Vehicle Engine
• 2004 Subaru Impreza 2.5L H4 Turbocharged 

Bosch Oxygen Sensor - Rear
Click to Enlarge
(Read reviews)
Retail Price:
$169.95
Sale Price: $56.48
(1) In Stock
Part Number: W0133-1791087
Notes: OE Connector
Position: Rear
Condition: New

Shipping Options:
Ground, Overnight, 2 Day
This Product Fits the Following: Warehouse: A
Vehicle Engine Transmission
• 2004 Subaru Impreza 2.0L H4  Standard 
• 2004 Subaru Impreza 2.5L H4 Turbocharged   

Bosch Oxygen Sensor - Rear
Click to Enlarge
(Read reviews)
Retail Price:
$199.95
Sale Price: $62.48
(1) In Stock
Part Number: W0133-1607316
Notes: OE Connector
Position: Rear
Condition: New

Shipping Options:
Ground, Overnight, 2 Day
This Product Fits the Following: Warehouse: A
Vehicle Engine
• 2004 Subaru Impreza Naturally Aspirated 

Bosch Oxygen Sensor - Front
Click to Enlarge
(Read reviews)
Retail Price:
$199.95
Sale Price: $111.48
(2) In Stock
Part Number: W0133-1653795
Notes: OE Connector - (Air Fuel Ratio Sensor)
Position: Front
Condition: New

Shipping Options:
Ground, Overnight, 2 Day
This Product Fits the Following: Warehouse: A
Vehicle Engine
• 2004 Subaru Impreza 2.5L H4 Turbocharged 

Bosch Oxygen Sensor - Downstream
Click to Enlarge
Bosch 13469
Oxygen Sensor
Close
Loading Reviews...
Sale Price: $64.98
(>35) In Stock
Part Number: 18021-09019894
Notes: OE Style Oxygen Sensor -- Actual OE part
Features:
  • Designed to determine the oxygen content of the exhaust gas
  • Improves fuel economy and lowers emission
  • Includes three OE heated wires
  • Advanced ceramic technology for consistent performance and long life
  • Features a Platinum Power-Grid that produces a precise voltage signal for the engine ECU
Position: Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: H
Vehicle Engine
• 2004 Subaru Impreza 2.5L H4 EJ251 

Bosch Oxygen Sensor - Downstream
Click to Enlarge
Bosch 15025
Oxygen Sensor
Close
Loading Reviews...
Sale Price: $58.98
(6) In Stock
Part Number: 18021-09125860
Notes: OE Style Oxygen Sensor -- Bosch engineered/ manufactured
Position: Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: H
Vehicle Engine Transmission
• 2004 Subaru Impreza 2.0L H4  Standard 
• 2004 Subaru Impreza 2.5L H4 EJ257   

Bosch Oxygen Sensor - Downstream
Click to Enlarge
(Read reviews)
Sale Price: $60.33
(11) In Stock
Part Number: 18021-05276136
Notes: OE Style Oxygen Sensor -- Bosch engineered/ manufactured
Position: Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Engine Transmission
• 2004 Subaru Impreza 2.0L H4  Automatic 

Bosch Oxygen Sensor - Downstream
Click to Enlarge
Bosch 15025
Oxygen Sensor
Close
Loading Reviews...
Sale Price: $58.98
(6) In Stock
Part Number: 18021-09125860
Notes: OE Style Oxygen Sensor -- Bosch engineered/ manufactured; Replacement item
Position: Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: H
Vehicle Engine Transmission
• 2004 Subaru Impreza 2.0L H4  Automatic 

Bosch Oxygen Sensor - Upstream
Click to Enlarge
Bosch 15537
Oxygen Sensor
Close
Loading Reviews...
Sale Price: $171.98
(1) In Stock
Part Number: 18021-09020182
Notes: OE Style Oxygen Sensor -- Bosch validated
Position: Upstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: H
Vehicle Engine
• 2004 Subaru Impreza 2.0L H4 

Bosch Oxygen Sensor - Upstream
Click to Enlarge
Bosch 15501
Oxygen Sensor
Close
Loading Reviews...
Sale Price: $132.98
(2) In Stock
Part Number: 18021-09020170
Notes: OE Style Oxygen Sensor -- Bosch validated
Position: Upstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: H
Vehicle Engine
• 2004 Subaru Impreza 2.5L H4 EJ251 

Bosch Oxygen Sensor - Upstream
Click to Enlarge
(Read reviews)
Sale Price: $114.98
(5) In Stock
Part Number: 18021-09020041
Notes: OE Style Oxygen Sensor -- Bosch validated
Position: Upstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: H
Vehicle Engine
• 2004 Subaru Impreza 2.5L H4 EJ257 

Bosch Oxygen Sensor - Downstream

Click to Enlarge
Bosch 15025
Oxygen Sensor
Close
Loading Reviews...
Sale Price: $63.98
(1) In Stock
Part Number: 18021-03406732
Notes: OE Style Oxygen Sensor -- OE manufactured part
Position: Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: F
Vehicle Engine Transmission
• 2004 Subaru Impreza 2.0L H4  Standard 
• 2004 Subaru Impreza 2.5L H4 EJ257   

Bosch Oxygen Sensor - Downstream

Click to Enlarge
Bosch 15025
Oxygen Sensor
Close
Loading Reviews...
Sale Price: $63.98
(1) In Stock
Part Number: 18021-03406732
Notes: OE Style Oxygen Sensor -- OE manufactured part; Replacement item
Position: Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: F
Vehicle Engine Transmission
• 2004 Subaru Impreza 2.0L H4  Automatic 

Bosch Oxygen Sensor - Downstream
Click to Enlarge
Bosch 15730
Oxygen Sensor
Close
Loading Reviews...
Sale Price: $37.98
(12) In Stock
Part Number: 18021-09020235
Notes: Universal Oxygen Sensor
Features:
  • Revolutionary patented submersible connection system protects against water and contamination and withstands the effects of extreme temperature and engine vibration
  • Special heat-resistant Posi-Lock connectors ensure easy installation
  • User-friendly instructions eliminate the need to call a hotline for assistance
  • Coated threads for easy installation
Position: Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: H
Vehicle Engine
• 2004 Subaru Impreza 2.0L H4 
• 2004 Subaru Impreza 2.5L H4 EJ257 

Bosch Oxygen Sensor - Downstream
Click to Enlarge
Bosch 15732
Oxygen Sensor
Close
Loading Reviews...
Sale Price: $41.33
(17) In Stock
Part Number: 18021-05020850
Notes: Universal Oxygen Sensor
Features:
  • Revolutionary patented submersible connection system protects against water and contamination and withstands the effects of extreme temperature and engine vibration
  • Special heat-resistant Posi-Lock connectors ensure easy installation
  • User-friendly instructions eliminate the need to call a hotline for assistance
  • Coated threads for easy installation
Position: Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2004 Subaru Impreza 2.5L H4 EJ251 

Walker Products Oxygen Sensor - Rear
Click to Enlarge
(Read reviews)
Retail Price:
$189.95
Sale Price: $68.48
(4) In Stock
Part Number: W0133-1894076
Notes: OE Connector
Position: Rear
Condition: New

Shipping Options:
Ground, Overnight, 2 Day
This Product Fits the Following: Warehouse: A
Vehicle Engine Transmission
• 2004 Subaru Impreza 2.0L H4  Automatic 
• 2004 Subaru Impreza 2.0L H4  Standard 
• 2004 Subaru Impreza 2.5L H4 Turbocharged   

Walker Products Oxygen Sensor - Rear
Click to Enlarge
(Read reviews)
Retail Price:
$199.95
Sale Price: $72.48
(1) In Stock
Part Number: W0133-1917361
Notes: OE Connector
Features:
  • Improved Engine Response & Performance
  • Lower Emissions
  • Improved Fuel Economy
  • Longer Sensor Life
  • Meets OEM Specifications
Position: Rear
Condition: New

Shipping Options:
Ground, Overnight, 2 Day
This Product Fits the Following: Warehouse: A
Vehicle Engine
• 2004 Subaru Impreza Naturally Aspirated 

Delphi Oxygen Sensor - Front
Click to Enlarge
Delphi ES10936
Oxygen Sensor
Close
Loading Reviews...
Sale Price: $165.33
(>35) In Stock
Part Number: 18021-05167852
Notes: Oxygen Sensor -- Wrench Size: 7/8 in.
Position: Front
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Sub Model Engine
• 2004 Subaru Impreza Outback  2.5L H4 EJ251 Naturally Aspirated 
• 2004 Subaru Impreza RS  2.5L H4 EJ251 Naturally Aspirated 
• 2004 Subaru Impreza TS  2.5L H4 EJ251 Naturally Aspirated 

Delphi Oxygen Sensor - Rear
Click to Enlarge
(Read reviews)
Sale Price: $53.33
(16) In Stock
Part Number: 18021-05168095
Notes: Oxygen Sensor -- Wrench Size: 7/8 in.; Actual OE Part
Position: Rear
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2004 Subaru Impreza 2.0L H4 
• 2004 Subaru Impreza 2.5L H4 EJ257 

Delphi Oxygen Sensor - Rear
Click to Enlarge
(Read reviews)
Sale Price: $73.33
(7) In Stock
Part Number: 18021-05167982
Notes: Oxygen Sensor -- Wrench Size: 7/8 in.; Actual OE Part
Position: Rear
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Sub Model Engine
• 2004 Subaru Impreza Outback  2.5L H4 EJ251 Naturally Aspirated 
• 2004 Subaru Impreza RS  2.5L H4 EJ251 Naturally Aspirated 
• 2004 Subaru Impreza TS  2.5L H4 EJ251 Naturally Aspirated 

Delphi Oxygen Sensor - Front
Click to Enlarge
(Read reviews)
Sale Price: $175.33
with FREE Shipping
(20) In Stock
Part Number: 18021-05167858
Notes: Oxygen Sensor -- Wrench Size: 7/8 in.; Air-Fuel Ratio Sensor
Position: Front
Condition: New

Shipping Options:
Free Ground Shipping
This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2004 Subaru Impreza 2.5L H4 EJ257 

Walker Oxygen Sensor - Downstream
Click to Enlarge
(Read reviews)
Sale Price: $55.33
(>35) In Stock
Part Number: 18021-05239220
Notes: Oxygen Sensor
Position: Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2004 Subaru Impreza 2.0L H4 EJ205 FI Turbocharged GAS 
• 2004 Subaru Impreza 2.5L H4 EJ257 FI Turbocharged GAS 

Walker Oxygen Sensor - Downstream
Click to Enlarge
(Read reviews)
Sale Price: $69.33
(>35) In Stock
Part Number: 18021-05239139
Notes: Oxygen Sensor
Position: Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2004 Subaru Impreza 2.5L H4 EJ251 FI Naturally Aspirated GAS 

Walker Oxygen Sensor - Upstream
Click to Enlarge
(Read reviews)
Sale Price: $142.33
(>35) In Stock
Part Number: 18021-05368934
Notes: Oxygen Sensor
Position: Upstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2004 Subaru Impreza 2.0L H4 EJ205 FI Turbocharged GAS 

Walker Oxygen Sensor - Upstream
Click to Enlarge
(Read reviews)
Sale Price: $112.33
(19) In Stock
Part Number: 18021-05368951
Notes: Oxygen Sensor
Position: Upstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2004 Subaru Impreza 2.5L H4 EJ257 FI Turbocharged GAS 

Walker Oxygen Sensor - Upstream
Click to Enlarge
(Read reviews)
Sale Price: $142.33
(>35) In Stock
Part Number: 18021-05239391
Notes: Oxygen Sensor
Position: Upstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2004 Subaru Impreza 2.5L H4 EJ251 FI Naturally Aspirated GAS 

Hitachi Oxygen Sensor
Click to Enlarge
(Read reviews)
Sale Price: $168.33
(1) In Stock
Part Number: 18021-05325529
Notes: Oxygen Sensor -- Grade Actual OE Part
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Sub Model Engine
• 2004 Subaru Impreza Outback  2.5L H4 
• 2004 Subaru Impreza RS  2.5L H4 
• 2004 Subaru Impreza TS  2.5L H4 
• 2004 Subaru Impreza WRX STI  2.5L H4 

NGK Oxygen Sensor - Downstream
Click to Enlarge
(Read reviews)
Sale Price: $69.98
(2) In Stock
Part Number: 18021-09082788
Notes: OE Type Oxygen Sensor -- B1S2; OE Equivalent
Position: Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: H
Vehicle Engine
• 2004 Subaru Impreza 2.0L H4 
• 2004 Subaru Impreza 2.5L H4 Turbocharged 

NGK Oxygen Sensor - Downstream
Click to Enlarge
(Read reviews)
Sale Price: $67.98
(2) In Stock
Part Number: 18021-09082746
Notes: OE Type Oxygen Sensor -- B1S2; OE Equivalent
Position: Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: H
Vehicle Engine
• 2004 Subaru Impreza 2.5L H4 Naturally Aspirated 

ACERA Oxygen Sensor - Rear
Click to Enlarge
(Read reviews)
Retail Price:
$199.95
Sale Price: $76.48
(1) In Stock
Part Number: W0133-2035248
Notes: OE Connector
Product Remark: Gunmetal/Bronze Housing
Features:
  • Premium OE Connector
  • Premium stainless steel body protecting against extreme heat and corrosion
  • Double layer protection for added durability and long life
  • Monolithic ceramic element allowing faster operating temperature
  • Aluma element surface minimizing thermal variation
  • Aluma protection layer that protects the sensor catalyst from harmful gas
  • Isolated circuitry that reduces signal noise
  • Patented Zirconium Oxide (ZrO2) material
  • 100% inspection and testing of p
Position: Rear
Condition: New

Shipping Options:
Ground, Overnight, 2 Day
This Product Fits the Following: Warehouse: A
Vehicle Engine
• 2004 Subaru Impreza Naturally Aspirated 

Spectra Premium Oxygen Sensor - Downstream
Click to Enlarge
(Read reviews)
Sale Price: $57.33
(21) In Stock
Part Number: 18021-05487887
Notes: Oxygen Sensor
Position: Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2004 Subaru Impreza 2.0L H4 FI Turbocharged GAS 
• 2004 Subaru Impreza 2.5L H4 FI Turbocharged GAS 

Spectra Premium Oxygen Sensor - Downstream
Click to Enlarge
(Read reviews)
Sale Price: $65.33
(7) In Stock
Part Number: 18021-05487763
Notes: Oxygen Sensor
Position: Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2004 Subaru Impreza 2.5L H4 FI Naturally Aspirated GAS 

Spectra Premium Oxygen Sensor - Upstream
Click to Enlarge
(Read reviews)
Sale Price: $163.33
(3) In Stock
Part Number: 18021-05487867
Notes: Oxygen Sensor -- Air-Fuel Ratio Sensor
Position: Upstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2004 Subaru Impreza 2.5L H4 FI Naturally Aspirated GAS 

Standard Motor Products Oxygen Sensor
Click to Enlarge
Standard Motor Products SG300
Oxygen Sensor
Close
Loading Reviews...
Sale Price: $50.33
(3) In Stock
Part Number: 18021-05064273
Notes: Oxygen Sensor -- Universal Downstream
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Engine Transmission
• 2004 Subaru Impreza 2.0L H4  Automatic 
• 2004 Subaru Impreza 2.0L H4  Standard 

ACERA Oxygen Sensor - Rear
Click to Enlarge
(Read reviews)
Retail Price:
$199.95
Sale Price: $76.48

Out of Stock
Part Number: W0133-1969693
Notes: OE Connector
Position: Rear
Condition: New

Shipping Options:
Ground, Overnight, 2 Day
This Product Fits the Following: Warehouse: A
Vehicle Engine
• 2004 Subaru Impreza Naturally Aspirated 

4.9 stars - (47 Reviews)
Reviews
Close
Loading Reviews...


View Mobile Site
View Full Site
BROWSE Home View Cart Catalog Articles
HELP Track Order Contact Us About Us Retrieve Quote
RESOURCES Affliate Program Models Brands
SECURITY
REVIEWS
© Copyright 2016 Parts Geek ® Providing discount auto parts online since 2002.