Subaru Impreza Oxygen Sensor - Select Year

Direct Fit - - After Catalyst - Before Catalyst - Square connector 3 Wire 17.83" Lead, (One hole in plug is left blank) -

Position: Rear
Direct Fit - - After Catalyst - Before Catalyst - Square connector 3 Wire 17.83" Lead, (One hole in plug is left blank) -

Position: Front
Direct Fit - - #2 O2 Sensor. - Located in the front of the front Catalyst. - #2 O2 Sensor. - Located in the front of front Catalyst - Before Catalyst
Triangle Connector - 3 Wire - Canada - Except California - Triangle Connector - 3 Wire - Catalyst Inlet- Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. - Except California - Canada - Triangle Connector - 3 Wire - Triangle Connector, 3 Wire - Triangle Connector, 3 Wire - Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. -

Position: Rear
Direct Fit - - #2 O2 Sensor. - Located in the front of the front Catalyst. - #2 O2 Sensor. - Located in the front of front Catalyst - Before Catalyst
Triangle Connector - 3 Wire - Canada - Except California - Triangle Connector - 3 Wire - Catalyst Inlet- Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. - Except California - Canada - Triangle Connector - 3 Wire - Triangle Connector, 3 Wire - Triangle Connector, 3 Wire - Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. -

Position: Front
Direct Fit - - #2 O2 Sensor. - Located in the front of the front Catalyst. - #2 O2 Sensor. - Located in the front of front Catalyst - Before Catalyst
Triangle Connector - 3 Wire - Canada - Except California - Triangle Connector - 3 Wire - Catalyst Inlet- Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. - Except California - Canada - Triangle Connector - 3 Wire - Triangle Connector, 3 Wire - Triangle Connector, 3 Wire - Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. -

Position: Front
Direct Fit - - #2 O2 Sensor. - Located in the front of the front Catalyst. - #2 O2 Sensor. - Located in the front of front Catalyst - Before Catalyst
Triangle Connector - 3 Wire - Canada - Except California - Triangle Connector - 3 Wire - Catalyst Inlet- Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. - Except California - Canada - Triangle Connector - 3 Wire - Triangle Connector, 3 Wire - Triangle Connector, 3 Wire - Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. -

Position: Rear
Direct Fit - #1 02 Sensor. - After Catalyst - #1 02 Sensor. - After Catalyst (EJ251) - 2000 Model Year - #1 O2 Sensor. - After Catalyst - After Catalyst - Canada - Except California - After Catalyst - Square Connector - 4 Wire - Except California - Canada - After Catalyst - Square Connector - 4 Wire -

Position: Rear
Direct Fit - #1 02 Sensor. - After Catalyst - #1 02 Sensor. - After Catalyst (EJ251) - 2000 Model Year - #1 O2 Sensor. - After Catalyst - After Catalyst - Canada - Except California - After Catalyst - Square Connector - 4 Wire - Except California - Canada - After Catalyst - Square Connector - 4 Wire -

Position: Rear
Direct Fit - #1 02 Sensor. - After Catalyst - #1 02 Sensor. - After Catalyst (EJ251) - 2000 Model Year - #1 O2 Sensor. - After Catalyst - After Catalyst - Canada - Except California - After Catalyst - Square Connector - 4 Wire - Except California - Canada - After Catalyst - Square Connector - 4 Wire -

Position: Front
Before Catalyst - Before Catalyst - (Air/Fuel Ratio Sensor) - Before Catalyst - 6 Pin Retangular plug (5 Wires Terminated) - Before Catalyst
6 Pin Retangular plug (5 Wires Terminated) - Located In Front of Front Catalyst. (Air/Fuel Ratio Sensor) -

Position: Front
Before Catalyst - Before Catalyst - (Air/Fuel Ratio Sensor) - Before Catalyst - 6 Pin Retangular plug (5 Wires Terminated) - Before Catalyst
6 Pin Retangular plug (5 Wires Terminated) - Located In Front of Front Catalyst. (Air/Fuel Ratio Sensor) -

Position: Rear
Direct Fit - - After Catalyst. - At Catalyst Outlet - Located in Front Catalyst - Located in Front Catalyst (Turbo Outlet) - Located in Front Catalyst (Turbo Outlet) - Early production WRX - Wire lead and plug appears to be slightly different than 22690-AA520 - Occasionally production dates in Subaru overlap - Located in front Catalyst. - Located in Main Catalyst - Located in Rear Catalyst - Located in Rear Catalyst Located in Rear Catalyst - Rear Catalyst Outlet -

Position: Rear
Direct Fit - - After Catalyst. - At Catalyst Outlet - Located in Front Catalyst - Located in Front Catalyst (Turbo Outlet) - Located in Front Catalyst (Turbo Outlet) - Early production WRX - Wire lead and plug appears to be slightly different than 22690-AA520 - Occasionally production dates in Subaru overlap - Located in front Catalyst. - Located in Main Catalyst - Located in Rear Catalyst - Located in Rear Catalyst Located in Rear Catalyst - Rear Catalyst Outlet -

Position: Rear
Direct Fit - - After Catalyst. - At Catalyst Outlet - Located in Front Catalyst - Located in Front Catalyst (Turbo Outlet) - Located in Front Catalyst (Turbo Outlet) - Early production WRX - Wire lead and plug appears to be slightly different than 22690-AA520 - Occasionally production dates in Subaru overlap - Located in front Catalyst. - Located in Main Catalyst - Located in Rear Catalyst - Located in Rear Catalyst Located in Rear Catalyst - Rear Catalyst Outlet -

Position: Rear
Direct Fit - - After Catalyst. - At Catalyst Outlet - Located in Front Catalyst - Located in Front Catalyst (Turbo Outlet) - Located in Front Catalyst (Turbo Outlet) - Early production WRX - Wire lead and plug appears to be slightly different than 22690-AA520 - Occasionally production dates in Subaru overlap - Located in front Catalyst. - Located in Main Catalyst - Located in Rear Catalyst - Located in Rear Catalyst Located in Rear Catalyst - Rear Catalyst Outlet -

Position: Rear
Direct Fit - - After Catalyst. - At Catalyst Outlet - Located in Front Catalyst - Located in Front Catalyst (Turbo Outlet) - Located in Front Catalyst (Turbo Outlet) - Early production WRX - Wire lead and plug appears to be slightly different than 22690-AA520 - Occasionally production dates in Subaru overlap - Located in front Catalyst. - Located in Main Catalyst - Located in Rear Catalyst - Located in Rear Catalyst Located in Rear Catalyst - Rear Catalyst Outlet -

Position: Rear
Direct Fit - - After Catalyst. - At Catalyst Outlet - Located in Front Catalyst - Located in Front Catalyst (Turbo Outlet) - Located in Front Catalyst (Turbo Outlet) - Early production WRX - Wire lead and plug appears to be slightly different than 22690-AA520 - Occasionally production dates in Subaru overlap - Located in front Catalyst. - Located in Main Catalyst - Located in Rear Catalyst - Located in Rear Catalyst Located in Rear Catalyst - Rear Catalyst Outlet -

Position: Rear
Direct Fit - - After Catalyst. - At Catalyst Outlet - Located in Front Catalyst - Located in Front Catalyst (Turbo Outlet) - Located in Front Catalyst (Turbo Outlet) - Early production WRX - Wire lead and plug appears to be slightly different than 22690-AA520 - Occasionally production dates in Subaru overlap - Located in front Catalyst. - Located in Main Catalyst - Located in Rear Catalyst - Located in Rear Catalyst Located in Rear Catalyst - Rear Catalyst Outlet -

Position: Rear
Direct Fit - - After Catalyst. - At Catalyst Outlet - Located in Front Catalyst - Located in Front Catalyst (Turbo Outlet) - Located in Front Catalyst (Turbo Outlet) - Early production WRX - Wire lead and plug appears to be slightly different than 22690-AA520 - Occasionally production dates in Subaru overlap - Located in front Catalyst. - Located in Main Catalyst - Located in Rear Catalyst - Located in Rear Catalyst Located in Rear Catalyst - Rear Catalyst Outlet -

Position: Rear
Direct Fit - - After Catalyst. - At Catalyst Outlet - Located in Front Catalyst - Located in Front Catalyst (Turbo Outlet) - Located in Front Catalyst (Turbo Outlet) - Early production WRX - Wire lead and plug appears to be slightly different than 22690-AA520 - Occasionally production dates in Subaru overlap - Located in front Catalyst. - Located in Main Catalyst - Located in Rear Catalyst - Located in Rear Catalyst Located in Rear Catalyst - Rear Catalyst Outlet -

Position: Rear
Direct Fit - - After Catalyst. - At Catalyst Outlet - Located in Front Catalyst - Located in Front Catalyst (Turbo Outlet) - Located in Front Catalyst (Turbo Outlet) - Early production WRX - Wire lead and plug appears to be slightly different than 22690-AA520 - Occasionally production dates in Subaru overlap - Located in front Catalyst. - Located in Main Catalyst - Located in Rear Catalyst - Located in Rear Catalyst Located in Rear Catalyst - Rear Catalyst Outlet -

Position: Front
Direct Fit - - Front and Rear - Square connector 3 Wire 17.83" Lead, (One hole in plug is left blank) - Square Connector, 3 Wire, (One hole in plug is left blank) -

Direct Fit - - Front and Rear - Square connector 3 Wire 17.83" Lead, (One hole in plug is left blank) - Square Connector, 3 Wire, (One hole in plug is left blank) -

Position: Front
Direct Fit - - Front and Rear - Square connector 3 Wire 17.83" Lead, (One hole in plug is left blank) - Square Connector, 3 Wire, (One hole in plug is left blank) -

Position: Front
3 Wire Triangle Plug - - #2 O2 Sensor. - Located in the front of the front Catalyst. - #2 O2 Sensor. - Located in the front of front Catalyst - Before Catalyst
Triangle Connector - 3 Wire - Canada - Except California - Triangle Connector - 3 Wire - Catalyst Inlet- Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. - Except California - Canada - Triangle Connector - 3 Wire - Triangle Connector, 3 Wire - Triangle Connector, 3 Wire - Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. -

Position: Rear
3 Wire Triangle Plug - - #2 O2 Sensor. - Located in the front of the front Catalyst. - #2 O2 Sensor. - Located in the front of front Catalyst - Before Catalyst
Triangle Connector - 3 Wire - Canada - Except California - Triangle Connector - 3 Wire - Catalyst Inlet- Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. - Except California - Canada - Triangle Connector - 3 Wire - Triangle Connector, 3 Wire - Triangle Connector, 3 Wire - Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. -

Position: Front
3 Wire Triangle Plug - - #2 O2 Sensor. - Located in the front of the front Catalyst. - #2 O2 Sensor. - Located in the front of front Catalyst - Before Catalyst
Triangle Connector - 3 Wire - Canada - Except California - Triangle Connector - 3 Wire - Catalyst Inlet- Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. - Except California - Canada - Triangle Connector - 3 Wire - Triangle Connector, 3 Wire - Triangle Connector, 3 Wire - Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. -

Position: Front
3 Wire Triangle Plug - - #2 O2 Sensor. - Located in the front of the front Catalyst. - #2 O2 Sensor. - Located in the front of front Catalyst - Before Catalyst
Triangle Connector - 3 Wire - Canada - Except California - Triangle Connector - 3 Wire - Catalyst Inlet- Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. - Except California - Canada - Triangle Connector - 3 Wire - Triangle Connector, 3 Wire - Triangle Connector, 3 Wire - Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. -

Position: Front
- #2 O2 Sensor. - Located in the front of the front Catalyst. - #2 O2 Sensor. - Located in the front of front Catalyst - Before Catalyst
Triangle Connector - 3 Wire - Canada - Except California - Triangle Connector - 3 Wire - Catalyst Inlet- Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. - Except California - Canada - Triangle Connector - 3 Wire - Triangle Connector, 3 Wire - Triangle Connector, 3 Wire - Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. -

Position: Rear
- #2 O2 Sensor. - Located in the front of the front Catalyst. - #2 O2 Sensor. - Located in the front of front Catalyst - Before Catalyst
Triangle Connector - 3 Wire - Canada - Except California - Triangle Connector - 3 Wire - Catalyst Inlet- Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. - Except California - Canada - Triangle Connector - 3 Wire - Triangle Connector, 3 Wire - Triangle Connector, 3 Wire - Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. -

Position: Front
- #2 O2 Sensor. - Located in the front of the front Catalyst. - #2 O2 Sensor. - Located in the front of front Catalyst - Before Catalyst
Triangle Connector - 3 Wire - Canada - Except California - Triangle Connector - 3 Wire - Catalyst Inlet- Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. - Except California - Canada - Triangle Connector - 3 Wire - Triangle Connector, 3 Wire - Triangle Connector, 3 Wire - Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. -

Position: Front
- #2 O2 Sensor. - Located in the front of the front Catalyst. - #2 O2 Sensor. - Located in the front of front Catalyst - Before Catalyst
Triangle Connector - 3 Wire - Canada - Except California - Triangle Connector - 3 Wire - Catalyst Inlet- Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. - Except California - Canada - Triangle Connector - 3 Wire - Triangle Connector, 3 Wire - Triangle Connector, 3 Wire - Per the OE parts info, this should be a sensor with a 3-pin connector. We have received some reports that certain models may be equipped with a sensor with a 4-pin connector. If this is the case, use Denso sensor #234-9018 or equivalent. -

Position: Front
- Front and Rear - Square connector 3 Wire 17.83" Lead, (One hole in plug is left blank) - Square Connector, 3 Wire, (One hole in plug is left blank) -

- Front and Rear - Square connector 3 Wire 17.83" Lead, (One hole in plug is left blank) - Square Connector, 3 Wire, (One hole in plug is left blank) -

Position: Front
- Front and Rear - Square connector 3 Wire 17.83" Lead, (One hole in plug is left blank) - Square Connector, 3 Wire, (One hole in plug is left blank) -

Position: Rear
#1 02 Sensor. - After Catalyst - #1 02 Sensor. - After Catalyst (EJ251) - 2000 Model Year - #1 O2 Sensor. - After Catalyst - After Catalyst - Canada - Except California - After Catalyst - Square Connector - 4 Wire - Except California - Canada - After Catalyst - Square Connector - 4 Wire -

Position: Rear
#1 02 Sensor. - After Catalyst - #1 02 Sensor. - After Catalyst (EJ251) - 2000 Model Year - #1 O2 Sensor. - After Catalyst - After Catalyst - Canada - Except California - After Catalyst - Square Connector - 4 Wire - Except California - Canada - After Catalyst - Square Connector - 4 Wire -

Position: Rear
#1 02 Sensor. - After Catalyst - #1 02 Sensor. - After Catalyst (EJ251) - 2000 Model Year - #1 O2 Sensor. - After Catalyst - After Catalyst - Canada - Except California - After Catalyst - Square Connector - 4 Wire - Except California - Canada - After Catalyst - Square Connector - 4 Wire -

Position: Front
- At Exhaust Manifold Outlet - At Exhaust Manifold Outlet - Exc. California - At Exhaust Manifold Outlet for non-California model - At front Catalyst Inlet - At front Catalyst Inlet for California model - Before Catalyst - Before Catalyst - (Air/Fuel Ratio Sensor) - Before Catalyst - 6 Pin Retangular plug (5 Wires Terminated) - Before Catalyst
6 Pin Retangular plug (5 Wires Terminated) - Located In Front of Front Catalyst. (Air/Fuel Ratio Sensor) -

Position: Front
- At Exhaust Manifold Outlet - At Exhaust Manifold Outlet - Exc. California - At Exhaust Manifold Outlet for non-California model - At front Catalyst Inlet - At front Catalyst Inlet for California model - Before Catalyst - Before Catalyst - (Air/Fuel Ratio Sensor) - Before Catalyst - 6 Pin Retangular plug (5 Wires Terminated) - Before Catalyst
6 Pin Retangular plug (5 Wires Terminated) - Located In Front of Front Catalyst. (Air/Fuel Ratio Sensor) -

Position: Rear
OE Type - #1 02 Sensor. - After Catalyst - #1 02 Sensor. - After Catalyst (EJ251) - 2000 Model Year - #1 O2 Sensor. - After Catalyst - After Catalyst - Canada - Except California - After Catalyst - Square Connector - 4 Wire - Except California - Canada - After Catalyst - Square Connector - 4 Wire -

Position: Rear
OE Type - #1 02 Sensor. - After Catalyst - #1 02 Sensor. - After Catalyst (EJ251) - 2000 Model Year - #1 O2 Sensor. - After Catalyst - After Catalyst - Canada - Except California - After Catalyst - Square Connector - 4 Wire - Except California - Canada - After Catalyst - Square Connector - 4 Wire -

Position: Rear
OE Type - #1 02 Sensor. - After Catalyst - #1 02 Sensor. - After Catalyst (EJ251) - 2000 Model Year - #1 O2 Sensor. - After Catalyst - After Catalyst - Canada - Except California - After Catalyst - Square Connector - 4 Wire - Except California - Canada - After Catalyst - Square Connector - 4 Wire -

Position: Rear
OE Type - - California Only - Square Plug - 4 Wire - Rear Catalyst Outlet - Rear Catalyst Outlet - California - Square Plug - 4 Wire - Square Plug - 4 Wire Square Plug - 4 Wire -

Position: Rear
OE Type - - California Only - Square Plug - 4 Wire - Rear Catalyst Outlet - Rear Catalyst Outlet - California - Square Plug - 4 Wire - Square Plug - 4 Wire Square Plug - 4 Wire -

Position: Rear
OE Type - - California Only - Square Plug - 4 Wire - Rear Catalyst Outlet - Rear Catalyst Outlet - California - Square Plug - 4 Wire - Square Plug - 4 Wire Square Plug - 4 Wire -

Position: Front
3 Wire Square Plug - - Front and Rear - Square connector 3 Wire 17.83" Lead, (One hole in plug is left blank) - Square Connector, 3 Wire, (One hole in plug is left blank) -

3 Wire Square Plug - - Front and Rear - Square connector 3 Wire 17.83" Lead, (One hole in plug is left blank) - Square Connector, 3 Wire, (One hole in plug is left blank) -

Position: Rear
3 Wire Square Plug - - Front and Rear - Square connector 3 Wire 17.83" Lead, (One hole in plug is left blank) - Square Connector, 3 Wire, (One hole in plug is left blank) -

Position: Front
3 Wire Square Plug - - Front and Rear - Square connector 3 Wire 17.83" Lead, (One hole in plug is left blank) - Square Connector, 3 Wire, (One hole in plug is left blank) -

Position: Rear
- After Catalyst. - Located in Front Catalyst - Located in Front Catalyst (Turbo Outlet) - Located in Main Catalyst - Located in Rear Catalyst -

Position: Rear
- After Catalyst. - Located in Front Catalyst - Located in Front Catalyst (Turbo Outlet) - Located in Main Catalyst - Located in Rear Catalyst -

Position: Rear
- After Catalyst. - Located in Front Catalyst - Located in Front Catalyst (Turbo Outlet) - Located in Main Catalyst - Located in Rear Catalyst -

Position: Rear
- After Catalyst. - Located in Front Catalyst - Located in Front Catalyst (Turbo Outlet) - Located in Main Catalyst - Located in Rear Catalyst -

Position: Rear
- After Catalyst. - Located in Front Catalyst - Located in Front Catalyst (Turbo Outlet) - Located in Main Catalyst - Located in Rear Catalyst -

Position: Rear
OE Connector - - Square connector 3 Wire 17.83" Lead, (One hole in plug is left blank) -

Position: Rear
OE Type - - After Catalyst. - At Catalyst Outlet - Located in Front Catalyst (Turbo Outlet) - Located in front Catalyst. - Located in Main Catalyst - Located in Rear Catalyst - Located in Rear Catalyst Located in Rear Catalyst - Rear Catalyst Outlet -

Position: Rear
OE Type - - After Catalyst. - At Catalyst Outlet - Located in Front Catalyst (Turbo Outlet) - Located in front Catalyst. - Located in Main Catalyst - Located in Rear Catalyst - Located in Rear Catalyst Located in Rear Catalyst - Rear Catalyst Outlet -

Position: Rear
OE Type - - After Catalyst. - At Catalyst Outlet - Located in Front Catalyst (Turbo Outlet) - Located in front Catalyst. - Located in Main Catalyst - Located in Rear Catalyst - Located in Rear Catalyst Located in Rear Catalyst - Rear Catalyst Outlet -

Position: Rear
OE Type - - After Catalyst. - At Catalyst Outlet - Located in Front Catalyst (Turbo Outlet) - Located in front Catalyst. - Located in Main Catalyst - Located in Rear Catalyst - Located in Rear Catalyst Located in Rear Catalyst - Rear Catalyst Outlet -

Position: Front
- 4 Wire Square Plug - Before Catalyst - Before Catalyst (at front Catalyst Inlet) - Before Catalyst - At Front Catalyst Inlet - California - California Only - California Only - 4 Wire Square Plug -

Position: Front
- 4 Wire Square Plug - Before Catalyst - Before Catalyst (at front Catalyst Inlet) - Before Catalyst - At Front Catalyst Inlet - California - California Only - California Only - 4 Wire Square Plug -

Position: Front
- 4 Wire Square Plug - Before Catalyst - Before Catalyst (at front Catalyst Inlet) - Before Catalyst - At Front Catalyst Inlet - California - California Only - California Only - 4 Wire Square Plug -

Position: Front
- 4 Wire Square Plug - Before Catalyst - Before Catalyst (at front Catalyst Inlet) - Before Catalyst - At Front Catalyst Inlet - California - California Only - California Only - 4 Wire Square Plug -

Position: Front
- 4 Wire Square Plug - Before Catalyst - Before Catalyst (at front Catalyst Inlet) - Before Catalyst - At Front Catalyst Inlet - California - California Only - California Only - 4 Wire Square Plug -

Position: Rear
- Before Catalyst - Located in Front Catalyst (Turbo Outlet) - Early production WRX - Wire lead and plug appears to be slightly different than 22690-AA520 - Occasionally production dates in Subaru overlap - Located in main Catalyst - Located: In Catalyst -

Position: Front
OE Type - Before Catalyst - Before Catalyst - At Front Catalyst - Before Catalyst - At Front Catalyst Inlet -

Position: Front
Black Plug - 4 Wire - Front Catalyst - Black Plug - 4 Wire -

Position: Front
-

Position: Front
4 Wire Square Plug - - 4 Wire Square Plug - Before Catalyst - California - California Only - 4 Wire Square Plug -

Position: Front
4 Wire Square Plug - - 4 Wire Square Plug - Before Catalyst - California - California Only - 4 Wire Square Plug -

Position: Front
4 Wire Square Plug - - 4 Wire Square Plug - Before Catalyst - California - California Only - 4 Wire Square Plug -

Position: Front
4 Wire Square Plug - - 4 Wire Square Plug - Before Catalyst - California - California Only - 4 Wire Square Plug -

Position: Front
4 Wire Square Plug - - 4 Wire Square Plug - Before Catalyst - California - California Only - 4 Wire Square Plug -

Position: Front
Before Catalyst - Before Catalyst - At Front Catalyst - Before Catalyst - At Front Catalyst Inlet -

Position: Front
Gray Plug - 4 Wire - Canada - Except California - Front Catalyst - 4 Wire - Gray Plug - Part number stamped on part - Front Catalyst - 4 Wire - Gray Plug - Part number stamped on part -

Position: Front
- Located In front Catalyst. - Located in Right Exhaust Manifold -

Position: Front
- Located In front Catalyst. - Located in Right Exhaust Manifold -

Position: Front
-