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Air/Fuel Ratio Sensor (Oxygen Sensor / Lambda Sensor)
OE Part Number
22641AA25A (also 22641-AA25A, 22641 AA25A)
Brand
Subaru (Genuine Original Equipment)
Part Description
Sensor Assembly - Air/Fuel Ratio
Sensor Type
Heated, Wideband / Air-Fuel Ratio Sensor
Fitting Position
Upstream (Front / Pre-Catalyst)
Number of Wires
4
Thread Diameter
M18 × 1.5
Hex Size / Spanner Size
22 mm (7/8″)
Cable Length
Approx. 205 mm (8.07 inches)
Item Dimensions
9.5 x 6.1 x 5.3 inches (24.1 x 15.5 x 13.5 cm)
Item Weight
0.70 lbs (0.32 kg)
Connector Type
Direct-Fit (Male Spade Connector)
Housing Material
Metal
Heated
Yes
Heater Resistance
9 ± 1.5 Ω
Operating Voltage
12 - 14 V
Maximum Operating Current
0.65 A
Maximum Exhaust Gas Temperature
≤ 930 °C
Light-Off Time
≤ 15 seconds
Quantity Required per Vehicle
1 (per upstream position; vehicles with 6-cylinder engines may require 2)
Warranty
Genuine Subaru parts are backed by Subaru's factory warranty
Technical Notes
This is an Air/Fuel Ratio (A/F) sensor, also commonly referred to as an oxygen sensor or lambda sensor. It is not a standard narrow-band oxygen sensor; it is a wideband sensor that provides precise, continuous measurement of the air-fuel mixture to the Engine Control Unit (ECU).
This sensor is typically installed in the upstream (front) position, located before the catalytic converter in the exhaust manifold.
The sensor operates by measuring the oxygen content in the exhaust gases. The built-in heating element ensures the sensor reaches operating temperature quickly (≤ 15 seconds), allowing the ECU to enter closed-loop fuel control sooner.
As a direct-fit component, it features a vehicle-specific electrical connector and pre-terminated wiring, eliminating the need for cutting or splicing during installation.
All genuine Subaru sensors are manufactured to original equipment quality standards and are 100% tested to ensure reliable performance and durability.
Cross-Reference & Interchange Numbers
This Lambda Sensor is a genuine Subaru Original Equipment component. The following OE numbers are directly interchangeable with 22641AA25A. Always verify physical fitment (connector shape, cable length and thread size) with your original part before purchasing.
Manufacturer / Brand
OE Part Number(s)
SUBARU
22641AA25A, 22641-AA25A, 22641 AA25A
SUBARU (Related)
22641-AA160, 22641AA530, 22641AA610
TOYOTA
8946733060, 89467-33060
LEXUS
8946706020
Cross-Reference Notes
This OE number (22641AA25A) is interchangeable with several part numbers across the Subaru, Toyota, and Lexus brands.
For Subaru vehicles, related OE numbers include 22641-AA160, 22641AA530, and 22641AA610.
For Toyota vehicles, the equivalent OE number is 8946733060 (also 89467-33060).
For Lexus vehicles, the equivalent OE number is 8946706020.
While these numbers are cross-referenced, always verify physical fitment (connector shape, cable length and thread size) with your original part before purchasing.
Vehicle Compatibility & Fitment Guide
⚠️ Important Fitment Note: This is an upstream (pre-catalyst / front) air-fuel ratio sensor. It is installed before the catalytic converter. Do not use it in the downstream (post-catalyst) position unless your vehicle's original sensor was located there. Upstream and downstream sensors are not interchangeable on most vehicles.
Subaru Applications
Model
Chassis / Generation
Year Range
Engine / Notes
B9 Tribeca
WX (First Generation)
2006 - 2007
3.0L H6 (EZ30D / EZ30R). Upstream (front) position
Tribeca
WX (First Generation)
2008 - 2009
3.0L H6 (EZ30D / EZ30R). Upstream (front) position
Outback
BL / BP (Fourth Generation)
2005 - 2009
3.0L H6 (EZ30D / EZ30R). Upstream (front) position
Outback
BL / BP (Fourth Generation)
2005 - 2009
2.5L H4 (non-turbo). Upstream (front) A/F sensor
Legacy
BL / BP (Fourth Generation)
2005 - 2009
3.0L H6 (EZ30D / EZ30R). Upstream (front) position
Legacy
BL / BP (Fourth Generation)
2005 - 2009
2.5L H4 (non-turbo). Upstream (front) A/F sensor
Cross-Brand Compatibility
Brand
Model
Year Range
Engine / Notes
Lexus
ES300
2002 - 2003
Upstream Left position
Toyota
Camry
2002 - 2003
Upstream Left position
Toyota
Camry
2004 - 2006
Upstream Right position
Toyota
Avalon (X3)
2005 - 2012
Compatible with part number 22641AA25A
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2021
Total Annual:
10000000-50000000
Employee Number:
50~99
Ecer Certification:
Verified Supplier
Company Overview
Hefei Ruimin Auto Sensor Co., Ltd. (hereinafter referred to as “Hefei Ruimin”) is a leading manufacturer and global trader specializing in the R&D, production, and sales of high-quality automotive sensors. Headquartered in Hefei, a renowned technology and industrial ... Company Overview
Hefei Ruimin Auto Sensor Co., Ltd. (hereinafter referred to as “Hefei Ruimin”) is a leading manufacturer and global trader specializing in the R&D, production, and sales of high-quality automotive sensors. Headquartered in Hefei, a renowned technology and industrial ...