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Denso Oxygen Sensor - A/F (08-21 STI)
$223.51
SKU
234-9034
Mapping Air/Fuel Ratios Throughout RPM Range for Reduced Emissions
DENSO’s air/fuel ratio sensor began to appear in the early 90s as vehicle manufacturers increased demands for better emission standards. DENSO’s air-to-fuel ratio sensor were developed to measure the air-to-fuel ratio information under a wider range of driving conditions. The air/fuel ratio sensor sends information to the engine management computer to makes adjustments based on driving conditions. This wider range and variable adjustments control the motor to burn fuel more efficient and produce less emissions.
As the automotive industry continues to improve on their standards DENSO is keeping the pace with advancements in our engineering to meet the demands from the industry. Also, as light duty fleet owners are holding on to their vehicles for longer periods, DENSO continues to make auto parts available for those critical replacement parts for all applications.
As oxygen sensor technology has evolved, DENSO’s engineers have been there every step of the way. From the first thimble-type sensors to heated, quick-response sensors required to meet ever more stringent emissions regulations, DENSO has supplied the OE industry with quality components. DENSO continues to innovate with the latest development in oxygen sensors, known as air/fuel sensors. These components, also known as wide-band oxygen sensors, have a broader response range to provide much finer control of air/fuel mixtures over a greater variety of operating conditions. DENSO helped to develop this important new technology. Consumers can rely on DENSO First Time Fit® air/fuel sensors.
Engineered to Incredibly Precise Standards
Engines are becoming more and more complex. Emission standards continue to rise. So, it’s crucial to choose a parts manufacturer known for innovation and longevity when replacing an oxygen or air/fuel sensor. DENSO First Time Fit® oxygen and air/fuel sensors are a good decision, every time.
Features:
- Tarnish-proof platinum electrodes provides longer life and maintains accuracy
- Quick-response planar zirconia element can quickly detect oxygen concentration
- Measures A/F ratios from approximately 12:1 to 19:1
Subaru OEM Part Numbers: 22641AA510, 22641AA720
Fitment Chart
| Year | Subaru STI | ||
|---|---|---|---|
| 2008 | ✓ | ||
| 2009 | ✓ | ||
| 2010 | ✓ | ||
| 2011 | ✓ | ||
| 2012 | ✓ | ||
| 2013 | ✓ | ||
| 2014 | ✓ | ||
| 2015 | ✓ | ||
| 2016 | ✓ | ||
| 2017 | ✓ | ||
| 2018 | ✓ | ||
| 2019 | ✓ | ||
| 2020 | ✓ | ||
| 2021 | ✓ |
WARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to P65Warnings
| SKU | 234-9034 |
|---|---|
| Manufacturer's Part Number | 234-9034 |
| Brand | Denso |
