LABWORK Upstream O2 Oxygen Sensor For 2004-2008 Mazda RX-8 9472958
LABWORK Upstream O2 Oxygen Sensor For 2004-2008 Mazda RX-8 9472958 is a brand-new 4-wire direct plug-in replacement sensor priced at $23.40. Designed to restore fuel efficiency and reduce emissions, it's ideal for DIY mechanics maintaining 2004–2008 Mazda RX-8 models with accurate OEM-matched fitment.
● In stock
Buy at Lab Work Auto →Price and availability may change. Click to see current details on Lab Work Auto.
Key features
- Exact fit for 2004–2008 Mazda RX-8
- 4-wire direct plug-in design
- Interchangeable with 9472958
- Brand new, not remanufactured
- Factory-matched connector
- Improves fuel efficiency
- Reduces exhaust emissions
Pros
- +Affordable at $23.40
- +No wiring modifications needed
- +Matches OEM performance
- +Quick installation
- +Supports emissions testing
Cons
- −Not returnable if installed
- −Requires voltmeter testing for warranty
- −20% restocking fee for wrong fit
About LABWORK Upstream O2 Oxygen Sensor For 2004-2008 Mazda RX-8 9472958
What is LABWORK Upstream O2 Oxygen Sensor For 2004-2008 Mazda RX-8 9472958?
The LABWORK Upstream O2 Oxygen Sensor is a brand-new replacement for the factory upstream oxygen sensor on 2004–2008 Mazda RX-8 vehicles. It monitors oxygen levels in exhaust gases and sends real-time data to the engine control unit (ECU) to optimize air-fuel mixture, improve fuel economy, and lower emissions. Unlike remanufactured units, this is a new component built to match OEM specifications, offering reliable performance at a fraction of dealership prices. It's designed specifically for the RX-8’s front (pre-catalytic converter) sensor position, ensuring seamless integration without modifications.
Key features
- Exact Fit — Designed for 2004–2008 Mazda RX-8 with factory-matched connector.
- 4-Wire Plug-In — Direct replacement with no splicing or wiring changes needed.
- OEM Interchange — Matches original part number 9472958 for guaranteed compatibility.
- New Construction — Not remanufactured; built to deliver consistent long-term performance.
- Fuel Efficiency — Helps restore optimal air-fuel ratio for better gas mileage.
- Emissions Reduction — Supports clean exhaust output and passes emissions testing.
- Quick Installation — DIY-friendly design allows for fast, tool-assisted replacement.
Who is LABWORK Upstream O2 Oxygen Sensor For 2004-2008 Mazda RX-8 9472958 for?
This sensor is ideal for Mazda RX-8 owners performing routine maintenance or addressing check engine lights related to oxygen sensor faults. It suits DIY auto enthusiasts with basic mechanical skills who want an affordable, reliable upgrade without visiting a dealership. Mechanics and repair shops also use it for cost-effective replacements that maintain OEM-level functionality.
How does LABWORK Upstream O2 Oxygen Sensor For 2004-2008 Mazda RX-8 9472958 compare?
Compared to remanufactured or universal-fit oxygen sensors, the LABWORK unit offers superior reliability due to its brand-new construction and exact plug-in design. It eliminates the guesswork and potential errors of splicing wires, which is common with universal sensors. While some premium brands may offer longer warranties, this sensor delivers comparable real-world performance at a significantly lower price point, making it a smart choice for budget-conscious drivers who still demand accuracy and durability.
Best use cases
- →Replacing failed upstream O2 sensor
- →Fixing check engine light codes
- →Improving fuel economy
- →Passing emissions inspection
- →DIY Mazda RX-8 maintenance
Is LABWORK Upstream O2 Oxygen Sensor For 2004-2008 Mazda RX-8 9472958 right for you?
Buy this sensor if you own a 2004–2008 Mazda RX-8 and need a reliable, low-cost O2 sensor replacement. Ideal for DIYers with basic tools and mechanical knowledge. Confirm your original part number is 9472958 and that the connector matches. Alternatives include pricier OEM sensors from dealers or universal types requiring splicing, which increase installation complexity and risk.
How it compares: Compared to remanufactured or universal O2 sensors, this LABWORK unit offers better reliability with plug-and-play ease. It avoids wiring errors and performance inconsistencies common in cheaper alternatives, while costing less than dealership OEM parts.
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What does the upstream O2 sensor do?
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The upstream O2 sensor measures oxygen levels in exhaust gases before the catalytic converter. It sends data to the ECU to adjust the air-fuel mixture, improving fuel efficiency, performance, and emissions control for your 2004–2008 Mazda RX-8.
Does this sensor require splicing wires?
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No, this LABWORK O2 sensor has a 4-wire direct plug-in design with a factory-matched connector. It connects seamlessly to your Mazda RX-8’s existing harness without cutting or splicing wires, ensuring fast, error-free installation.
How do I know if my O2 sensor is bad?
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Common signs include a check engine light, poor fuel economy, rough idling, or failed emissions tests. Use an OBD2 scanner to check for oxygen sensor-related codes. A voltmeter test can confirm if the sensor is functioning properly before replacement.
Is this sensor new or remanufactured?
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This LABWORK Upstream O2 Sensor is brand new, not remanufactured. It's built to match OEM specifications for 2004–2008 Mazda RX-8 models, ensuring reliable performance and longevity compared to rebuilt or used units.
Can I return the sensor after installation?
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No, installed, altered, or contaminated sensors are not returnable. Only defective units—verified by voltmeter testing—are eligible for warranty claims. A 20% restocking fee applies if you return it unused due to incorrect fitment.
How much does LABWORK Upstream O2 Oxygen Sensor For 2004-2008 Mazda RX-8 9472958 cost?
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LABWORK Upstream O2 Oxygen Sensor For 2004-2008 Mazda RX-8 9472958 is $23.40 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.
Is LABWORK Upstream O2 Oxygen Sensor For 2004-2008 Mazda RX-8 9472958 in stock at Lab Work Auto?
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Yes, LABWORK Upstream O2 Oxygen Sensor For 2004-2008 Mazda RX-8 9472958 is currently in stock at Lab Work Auto.
Specifications
- SKU
- F7-3843