2004 Subaru Legacy Air / Fuel Ratio Sensor
Browse our online catalogue to find original replacement Air / Fuel Ratio Sensors specifically designed to fit a 2004 Subaru Legacy.





2004 Subaru Legacy Air / Fuel Ratio Sensor
$348.25
$154.19
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Upstream
Required Per Vehicle: 1
Made in Japan
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Vehicle Fitment Notes:
Located Before LH Primary (Manifold) Catalyst B2S1 Calif. Emissions OE Equivalent Design
Located Before LH Primary (Manifold) Catalyst B2S1 Calif. Emissions OE Equivalent Design





2004 Subaru Legacy Air / Fuel Ratio Sensor
$348.25
$154.19
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Upstream
Required Per Vehicle: 1
Made in Japan
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Vehicle Fitment Notes:
Located Before RH Primary (Manifold) Catalyst B1S1 Calif. Emissions OE Equivalent Design
Located Before RH Primary (Manifold) Catalyst B1S1 Calif. Emissions OE Equivalent Design

2004 Subaru Legacy Air / Fuel Ratio Sensor
$399.81
$283.08
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Upstream
Required Per Vehicle: 1
Made in USA
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Vehicle Fitment Notes:
Canada & Exc. Calif. DENSO is the O.E. Manufacturer / Direct Fit Air Fuel Ratio Sensor OE
Canada & Exc. Calif. DENSO is the O.E. Manufacturer / Direct Fit Air Fuel Ratio Sensor OE





2004 Subaru Legacy Air / Fuel Ratio Sensor
$447.92
$302.78
In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Upstream
Required Per Vehicle: 1
Made in Japan
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Vehicle Fitment Notes:
B1S1 Federal Emissions OE Equivalent Design
B1S1 Federal Emissions OE Equivalent Design

2004 Subaru Legacy Air / Fuel Ratio Sensor
$354.05
$260.70
In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Upstream
Required Per Vehicle: 2
Made in Japan
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Vehicle Fitment Notes:
Calif. DENSO is the O.E. Manufacturer / Direct Fit Air Fuel Ratio Sensor OE
Calif. DENSO is the O.E. Manufacturer / Direct Fit Air Fuel Ratio Sensor OE





2004 Subaru Legacy Oxygen Sensor
$116.92
$74.04
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Downstream
Required Per Vehicle: 1
Made in USA
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ253;
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ253;





2004 Subaru Legacy Oxygen Sensor
$116.92
$74.04
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Downstream
Required Per Vehicle: 2
Made in USA
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ259;
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ259;





2004 Subaru Legacy Oxygen Sensor
$181.92
$109.31
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Downstream
Required Per Vehicle: 1
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Vehicle Fitment Notes:
Located After LH Primary (Manifold) Catalyst B2S2 Calif. Emissions OE Equivalent Design
Located After LH Primary (Manifold) Catalyst B2S2 Calif. Emissions OE Equivalent Design





2004 Subaru Legacy Oxygen Sensor
$181.92
$109.31
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Downstream
Required Per Vehicle: 1
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Vehicle Fitment Notes:
Located After RH Primary (Manifold) Catalyst B1S2 Calif. Emissions OE Equivalent Design
Located After RH Primary (Manifold) Catalyst B1S2 Calif. Emissions OE Equivalent Design





2004 Subaru Legacy Oxygen Sensor
$181.92
$109.31
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Downstream
Required Per Vehicle: 1
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Vehicle Fitment Notes:
Located After Secondary Catalyst B1S3 Calif. Emissions OE Equivalent Design
Located After Secondary Catalyst B1S3 Calif. Emissions OE Equivalent Design

2004 Subaru Legacy Oxygen Sensor
$104.82
$71.52
In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Downstream
Required Per Vehicle: 1
Made in USA
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Vehicle Fitment Notes:
Canada & Exc. Calif. O.E. Quality Universal Replacement Sensor
Canada & Exc. Calif. O.E. Quality Universal Replacement Sensor

2004 Subaru Legacy Oxygen Sensor
$188.96
$110.93
In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Downstream
Required Per Vehicle: 2
Made in USA
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Vehicle Fitment Notes:
Calif.; Loc. After Primary Catalyst DENSO is the O.E. Manufacturer / Direct Fit Oxygen Sensor OE
Calif.; Loc. After Primary Catalyst DENSO is the O.E. Manufacturer / Direct Fit Oxygen Sensor OE





2004 Subaru Legacy Oxygen Sensor
$115.06
$61.73
In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Downstream
Required Per Vehicle: 1
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Vehicle Fitment Notes:
Located After Primary Catalytic Converter; w/ California Emissions Located After Secondary Catalytic Converter; w/ California Emissions
Located After Primary Catalytic Converter; w/ California Emissions Located After Secondary Catalytic Converter; w/ California Emissions





2004 Subaru Legacy Oxygen Sensor
$211.33
$114.18
In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Downstream
Required Per Vehicle: 1
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Vehicle Fitment Notes:
B1S2 Federal Emissions OE Equivalent Design
B1S2 Federal Emissions OE Equivalent Design

2004 Subaru Legacy Oxygen Sensor
$172.88
$110.89
In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Downstream
Required Per Vehicle: 1
Made in USA
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Vehicle Fitment Notes:
Calif.; Loc. After Secondary Catalyst DENSO is the O.E. Manufacturer / Direct Fit Oxygen Sensor OE
Calif.; Loc. After Secondary Catalyst DENSO is the O.E. Manufacturer / Direct Fit Oxygen Sensor OE





2004 Subaru Legacy Oxygen Sensor
$301.62
$315.63
Limited Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Upstream
Required Per Vehicle: 2
Made in Japan
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ259;
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ259;

2004 Subaru Legacy Oxygen Sensor
$196.15
$115.05
Limited Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Downstream
Required Per Vehicle: 1
Made in USA
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Vehicle Fitment Notes:
Canada & Exc. Calif. O.E. Quality Direct Fit Replacement Sensor
Canada & Exc. Calif. O.E. Quality Direct Fit Replacement Sensor





2004 Subaru Legacy Oxygen Sensor
$204.33
$153.84
Limited Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 2-4 Hours (Order before 3:00 PM)
Pick-Up: Ready in 2-4 Hours (Order before 3:00 PM)
Downstream
Required Per Vehicle: 1
Made in USA
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ253;
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ253;





2004 Subaru Legacy Oxygen Sensor
$132.47
$71.08
Limited Stock
Condition: New
Ships: Next Business Day
Pick-Up: Next Business Day
Pick-Up: Next Business Day
Downstream
Required Per Vehicle: 1
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Vehicle Fitment Notes:
w/ Federal Emissions
w/ Federal Emissions





2004 Subaru Legacy Oxygen Sensor
$209.43
$130.34
Out of Stock
Condition: New
Downstream
Required Per Vehicle: 2
Made in USA
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ259;
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ259;





2004 Subaru Legacy Oxygen Sensor
$448.88
$400.91
Out of Stock
Condition: New
Upstream
Required Per Vehicle: 1
Made in Japan
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ253;
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ253;





2004 Subaru Legacy Oxygen Sensor
$533.43
$386.40
Out of Stock
Condition: New
Front
Required Per Vehicle: 1
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ253;
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ253;





2004 Subaru Legacy Oxygen Sensor
$416.53
$301.71
Out of Stock
Condition: New
Front
Required Per Vehicle: 1
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ259;
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ259;





2004 Subaru Legacy Oxygen Sensor
$218.40
$158.19
Out of Stock
Condition: New
Rear
Required Per Vehicle: 1
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ253;
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ253;





2004 Subaru Legacy Oxygen Sensor
$162.86
$117.97
Out of Stock
Condition: New
Rear
Required Per Vehicle: 1
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ259;
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0); Engine Designation: EJ259;




2004 Subaru Legacy Oxygen Sensor
$620.94
$333.08
Call For Availability
Condition: New
Upstream
Required Per Vehicle: 1
Made in USA
Fits: 2004 Subaru Legacy
Equipped With:
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Engine Base: 2.5L 2458cc H4 (3.92x3.11; 99.5x79.0);
Vehicle Fitment Notes:
w/ Federal Emissions w/ 4 Wires
w/ Federal Emissions w/ 4 Wires