All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
Alibaba
Vehicle Parts & Accessories
Auto Electrical Systems
Auto Sensors
  • DEFUS Flow Matched air Fuel Ratio Rear Oxygen Sensor 22690-AA940 for Subaru IMPREZA/LEGACY O2 Lambda Sensor 22690AA940
  • DEFUS Flow Matched air Fuel Ratio Rear Oxygen Sensor 22690-AA940 for Subaru IMPREZA/LEGACY O2 Lambda Sensor 22690AA940
  • DEFUS Flow Matched air Fuel Ratio Rear Oxygen Sensor 22690-AA940 for Subaru IMPREZA/LEGACY O2 Lambda Sensor 22690AA940
  • DEFUS Flow Matched air Fuel Ratio Rear Oxygen Sensor 22690-AA940 for Subaru IMPREZA/LEGACY O2 Lambda Sensor 22690AA940
  • DEFUS Flow Matched air Fuel Ratio Rear Oxygen Sensor 22690-AA940 for Subaru IMPREZA/LEGACY O2 Lambda Sensor 22690AA940
  • DEFUS Flow Matched air Fuel Ratio Rear Oxygen Sensor 22690-AA940 for Subaru IMPREZA/LEGACY O2 Lambda Sensor 22690AA940
DEFUS Flow Matched air Fuel Ratio Rear Oxygen Sensor 22690-AA940 for Subaru IMPREZA/LEGACY O2 Lambda Sensor 22690AA940

DEFUS Flow Matched air Fuel Ratio Rear Oxygen Sensor 22690-AA940 for Subaru IMPREZA/LEGACY O2 Lambda Sensor 22690AA940

  • 4 - 999 Pieces
    $15
  • >= 1000 Pieces
    $12

Customization:

Customized logo（Min.Order: 4 pieces）
View product details

DEFUS Flow Matched air Fuel Ratio Rear Oxygen Sensor 22690-AA940 for Subaru IMPREZA/LEGACY O2 Lambda Sensor 22690AA940

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Oxygen Level Monitoring: Continuously measures oxygen levels in exhaust gases to optimize engine performance and reduce emissions.
  • Air-Fuel Ratio Adjustment: Communicates real-time data to the vehicle's ECU to maintain an ideal fuel mixture, ensuring efficiency and compliance with emissions standards.

Key features

  • 1. Corrosion-Resistant Stainless Steel Construction

    • With a corrosion-resistant stainless steel body, ensure long-lasting durability in harsh exhaust environments. The robust design withstands extreme temperatures and vibrations, outperforming sensors made with less durable materials*.

  • 2. Precision-Engineered ECU Integration

    • With a precision-engineered connector and cylindrical sensor tip, seamlessly integrate with Subaru’s ECU for real-time air-fuel ratio adjustments. This ensures optimal engine performance and reduced emissions compared to generic sensors*.

  • 3. Flow-Matched Efficiency Optimization

    • Flow-matched design ensures accurate oxygen detection, optimizing fuel efficiency by up to 15% in 2.5L engines. This technology maintains stable combustion, outperforming non-flow-matched sensors in harsh driving conditions*.

  • 4. Direct-Fit Subaru Compatibility

    • Designed as a direct replacement for Subaru Impreza/Legacy models (including saloon, hatchback, and estate variants), ensuring effortless installation and adherence to factory specifications. No aftermarket modifications required*.

  • 5. OEM-Standard Reliability

    • Manufactured to OEM standards, guaranteeing compliance with emissions regulations and longevity. Meets strict automotive quality benchmarks, surpassing low-cost alternatives in durability and precision*.

Product details

DEFUS Flow Matched air Fuel Ratio Rear Oxygen Sensor 22690-AA940 for Subaru IMPREZA/LEGACY O2 Lambda Sensor 22690AA940

The DEFUS Flow Matched Air/Fuel Ratio Rear Oxygen Sensor (22690-AA940) is a precision-engineered component designed for Subaru Impreza/Legacy models with 2.5L engines. Built with corrosion-resistant stainless steel and high-temperature plastic connectors, this sensor ensures reliable exhaust monitoring and optimal engine performance. It directly communicates with the vehicle’s ECU to maintain the ideal air-fuel ratio, reducing emissions and enhancing fuel efficiency.

Technical specifications

FeatureSpecificationBenefit
Material CompositionStainless Steel Body + High-Temperature Plastic ConnectorCorrosion resistance and thermal stability for harsh exhaust environments
Engine Compatibility2.5L Subaru Impreza/Legacy Models (Saloon, Hatchback, Estate, etc.)OEM-standard fitment for precise fuel mixture control
Sensor Accuracy±0.1 VoltsEnsures emissions compliance and engine efficiency
Response Time0.5 Seconds (Industry Standard)Real-time adjustments for dynamic driving conditions

Customization guide

Adjustable dimensions and connector types to meet specific Subaru model requirements. Customize sensor length or diameter for precise fitment in varied exhaust system designs.

Get inspired

With DEFUS’s advanced sensor technology, you can achieve optimal fuel efficiency and reduced emissions. Ideal for Subaru owners seeking a direct replacement that maintains engine performance while meeting strict emissions standards.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Response Time0.5s0.4s (+20%)0.3s (+40%)*
Temperature Range-40°C to 1200°C-40°C to 1250°C-40°C to 1300°C (+8%)
Durability50,000 Miles75,000 Miles (+50%)100,000 Miles (+100%)

Supplier's note

  1. Technical Breakthroughs:

    • The Pro Model’s expanded temperature range (-40°C to 1300°C) enables use in extreme environments.
    • Advanced Model’s 0.4s response time ensures faster fuel adjustments than competitors.
    • Base Model’s ±0.1V accuracy meets OEM standards for emissions control.

  2. Version Selection Guide:

    • Pro Model: Ideal for heavy-duty or high-performance Subaru vehicles requiring prolonged durability and extreme heat resistance.
    • Advanced Model: Perfect for drivers prioritizing rapid response times and extended mileage in moderate conditions.
    • Base Model: Best for routine maintenance or standard driving scenarios where OEM compliance is critical.

*Pro Model’s response time is 40% faster than industry benchmarks, enabling smoother engine adjustments.

Frequently asked questions

  • Which DEFUS oxygen sensor model suits Subaru Impreza/ Legacy vehicles with 2.5L engines?

  • Does the DEFUS O2 sensor require professional installation for Subaru Legacy/Impreza?

  • Why is stainless steel used in DEFUS oxygen sensors for Subaru models?

  • Is the DEFUS oxygen sensor emissions-certified for Subaru vehicles?

  • How does the DEFUS sensor improve fuel efficiency in Subaru Impreza/ Legacy?

  • How long does the DEFUS O2 sensor last in Subaru’s high-temperature exhaust systems?

  • Can the DEFUS sensor be customized for Subaru Legacy V or Impreza Estate models?

  • How often should I replace the DEFUS oxygen sensor in my Subaru?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material QualityHarsh environments (salt, chemicals)▲ Stainless Steel 316 (ASTM A240) vs Industry’s 304 stainless steelEnhanced corrosion resistance for longevity in corrosive conditionsSlightly heavier than base-grade materials
Sensor AccuracyHigh-performance engine tuning▲ ±0.5% oxygen reading (ISO 15150) vs Industry’s ±2%Precise fuel mixture control for optimal power and efficiencyHigher cost due to advanced sensor technology
Temperature ResistanceTurbocharged or high-performance engines▲ 950°C (SAE J2045 compliant) vs Industry’s 850°CWithstands extreme exhaust temperatures for reliability in high-output enginesRequires robust mounting hardware for installation
Emissions ComplianceStrict emission zones (e.g., Euro 6)▲ Exceeds EPA Tier 3 (Euro 6 compliant) vs Industry’s Tier 3 standardReduces pollutants, enabling use in regulated regionsCompliance certifications may increase production costs
Installation CompatibilitySubaru owners needing direct-fit partsDirect-fit for Subaru models (22690-AA940) vs Industry’s universal adaptorsNo modifications required for Subaru Impreza/Legacy vehiclesLimited to specific Subaru models (e.g., 2.5L engines)
DurabilityHigh-mileage or commercial vehicles▲ 100k-mile warranty (ISO 16750-4) vs Industry’s 50k-mile warrantyLonger service life for frequent or heavy-duty useHeavier build may add minor weight to the vehicle

Related searches

woven polyester rayon fabric9 pin mini din to RCA cablemini loader china loader frontadjustable sports brawooden medicine boxottoman shoe storage benchglass oil dispenservaldus fashion series smartwatch strap gpsbiodegradable sugarcane bowlbiodegradable tea tube packaging paper cansback windshield for Audiblack round coffee tablecustom ski maskwall stand for air conditioner swampcoffee cup gold cups and saucers

The Product Description is generated by third-party, and Alibaba.com is not liable for any risks related to inaccuracies or the infringement of third-party rights.

The information in this Product Description may differ from the details on the product listing page on Alibaba.com. Additionally, the contents may not be updated in real-time with the product listing page on Alibaba.com, and there may be delays in reflecting the most updated information. The description on product listing page takes precedence. You shall not rely on this Product Description in making transaction decisions.

The comparison data is based on manufacturer information and industry standards. Actual results may vary depending on individual use cases. It is advisable to verify details with the supplier for the most accurate information.