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Subaru Baja Replacement Air Fuel Ratio Sensor Information


Your Subaru Baja employs several different electronic sensors, each in communication with the engine control computer, in an effort to provide an ideal air/fuel mixture to the cylinders for combustion. For most gasoline engines, the perfect mixture is 14.7 parts air to one part gas. A specific sensor, called the air fuel ratio sensor (AFR), is instrumental in maintaining this ideal, or stoichiometric, ratio. Some of the other sensors utilized in the process include the air mass sensor, the MAP sensor and various oxygen sensors.

When the AFR sensor is faulty, the computer isn't able to know the precise air/fuel mixture being burned. Too little air or too much fuel is called "rich," and increases pollution levels and fuel consumption. Too much air or too little fuel creates a "lean" mixture, causing poor performance and possible engine damage. Parts Geek has top-quality replacement AFR sensors for 2003-2006 Subaru Baja.


They are available for the following Subaru Baja years: 2006, 2005, 2004, 2003, 06, 05, 04, 03. This part is also sometimes called Subaru Baja Wide Range Air Fuel Sensors. We stock air fuel ratio sensor parts for most Subaru models including Impreza, Outback, Forester, Legacy, B9 Tribeca, BRZ and Tribeca.

We stock these Air Fuel Ratio Sensor brands for the Subaru Baja: Denso, Walker Products and NGK.


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Review Fitment Notes to Ensure Proper Fit

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(1 Reviews)
5 Stars
Denso 234-9121
Air Fuel Ratio Sensor
Close
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Our List Price: $113.33
with FREE Shipping
(20) In Stock
Product SKU: 234-9121
Product Note: OE Style -- DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: B
Vehicle Engine
2005 (05) Subaru Baja 2.5L H4 Turbocharged 


Click to Enlarge
(1 Reviews)
5 Stars
Denso 234-9121
Air Fuel Ratio Sensor
Close
Loading Reviews...
Our List Price: $113.33
with FREE Shipping
(20) In Stock
Product SKU: 234-9121
Product Note: OE Style -- DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: B
Vehicle Engine
2006 (06) Subaru Baja 2.5L H4 Turbocharged 


Click to Enlarge
(3 Reviews)
5 Stars
Denso 234-9015
Air Fuel Ratio Sensor
Close
Loading Reviews...
Our List Price: $121.33
with FREE Shipping
(>35) In Stock
Product SKU: 234-9015
Product Note: OE Style -- DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Features:
  • Manufactured to detect the amount of exhaust gas air fuel ratio
  • Constructed from durable material
  • Features zirconia solid electrolyte
  • Highly accurate
  • Easy installation
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: B
Vehicle Engine
2003 (03) Subaru Baja 2.5L H4 


Click to Enlarge
(1 Reviews)
5 Stars
Denso 234-9121
Air Fuel Ratio Sensor
Close
Loading Reviews...
Our List Price: $113.33
with FREE Shipping
(20) In Stock
Product SKU: 234-9121
Product Note: OE Style -- DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: B
Vehicle Engine
2004 (04) Subaru Baja 2.5L H4 Turbocharged 


Click to Enlarge
(3 Reviews)
5 Stars
Denso 234-9015
Air Fuel Ratio Sensor
Close
Loading Reviews...
Our List Price: $121.33
with FREE Shipping
(>35) In Stock
Product SKU: 234-9015
Product Note: OE Style -- DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Features:
  • Manufactured to detect the amount of exhaust gas air fuel ratio
  • Constructed from durable material
  • Features zirconia solid electrolyte
  • Highly accurate
  • Easy installation
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: B
Vehicle Engine
2005 (05) Subaru Baja 2.5L H4 Naturally Aspirated 


Click to Enlarge
(Read reviews)
Product List Price:
$221.95
Our List Price: $177.48
with FREE Shipping
(>25) In Stock
Product SKU: W0133-1604381
Product Note: First Time Fit - (Air Fuel Ratio Sensor)
Important Product Info: 4 Pin Connector
Position of Product: Front
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping or (Overnight and 2-Day Shipping)
Additional Fitment Information: Catalog: A
Vehicle Engine
2004 (04) Subaru Baja Naturally Aspirated 


Click to Enlarge
(Read reviews)
Product List Price:
$221.95
Our List Price: $177.48
with FREE Shipping
(>25) In Stock
Product SKU: W0133-1604381
Product Note: First Time Fit - (Air Fuel Ratio Sensor)
Important Product Info: 4 Pin Connector
Position of Product: Front
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping or (Overnight and 2-Day Shipping)
Additional Fitment Information: Catalog: A
Vehicle
2003 (03) Subaru Baja


Click to Enlarge
(Read reviews)
Product List Price:
$221.95
Our List Price: $177.48
with FREE Shipping
(>25) In Stock
Product SKU: W0133-1604381
Product Note: First Time Fit - (Air Fuel Ratio Sensor)
Important Product Info: 4 Pin Connector
Position of Product: Front
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping or (Overnight and 2-Day Shipping)
Additional Fitment Information: Catalog: A
Vehicle Engine
2005 (05) Subaru Baja Naturally Aspirated 


Click to Enlarge
(3 Reviews)
5 Stars
Denso 234-9015
Air Fuel Ratio Sensor
Close
Loading Reviews...
Our List Price: $121.33
with FREE Shipping
(>35) In Stock
Product SKU: 234-9015
Product Note: OE Style -- DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Features:
  • Manufactured to detect the amount of exhaust gas air fuel ratio
  • Constructed from durable material
  • Features zirconia solid electrolyte
  • Highly accurate
  • Easy installation
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: B
Vehicle Engine
2004 (04) Subaru Baja 2.5L H4 Naturally Aspirated 


Click to Enlarge
(Read reviews)
Product List Price:
$199.95
Our List Price: $149.48
(6) In Stock
Product SKU: W0133-1893846
Position of Product: Front
Inventory: In Stock
Condition: New

Shipping Options:
Ground, Overnight, 2 Day
Additional Fitment Information: Catalog: A
Vehicle Engine
2006 (06) Subaru Baja Turbocharged 


Click to Enlarge
(Read reviews)
Product List Price:
$199.95
Our List Price: $149.48
(6) In Stock
Product SKU: W0133-1893846
Position of Product: Front
Inventory: In Stock
Condition: New

Shipping Options:
Ground, Overnight, 2 Day
Additional Fitment Information: Catalog: A
Vehicle Engine
2004 (04) Subaru Baja Turbocharged 


Click to Enlarge
(Read reviews)
Our List Price: $193.98
with FREE Shipping
(3) In Stock
Product SKU: 24664
Product Note: Direct Fit 4-Wire A/F Sensor -- B1S1; OE Replacement
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: H
Vehicle Engine
2006 (06) Subaru Baja 2.5L H4 Naturally Aspirated 


Click to Enlarge
(Read reviews)
Our List Price: $193.98
with FREE Shipping
(3) In Stock
Product SKU: 24664
Product Note: Direct Fit 4-Wire A/F Sensor -- B1S1; OE Replacement
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: H
Vehicle Engine
2005 (05) Subaru Baja 2.5L H4 Naturally Aspirated 


Click to Enlarge
(Read reviews)
Our List Price: $193.98
with FREE Shipping
(3) In Stock
Product SKU: 24664
Product Note: Direct Fit 4-Wire A/F Sensor -- B1S1; OE Replacement
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: H
Vehicle Engine
2004 (04) Subaru Baja 2.5L H4 Naturally Aspirated 


Click to Enlarge
(Read reviews)
Our List Price: $193.98
with FREE Shipping
(3) In Stock
Product SKU: 24664
Product Note: Direct Fit 4-Wire A/F Sensor -- B1S1; OE Replacement
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: H
Vehicle Engine
2003 (03) Subaru Baja 2.5L H4 


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Some of our Customer Reviews
Very Satisfied
Reviewer: new part just like oem

Easy fit exactly like oem part easy to install worked well, quick delivery

2006 Subaru Baja Air Fuel Ratio Sensor


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