PRODUCT DETAILS
Denso O2 Sensor for 2006-2011 Honda Civic Si - Part Number 36531-RRA-013
Your 2006-2011 Civic Si's O2 sensor's gone bad and you're throwing a check engine light. The factory Denso unit that came on your car is getting old or it's reading wrong because of modifications you've made. The Denso O2 Sensor part number 36531-RRA-013 is the genuine replacement that bolts right where the stock one came out. It's the same sensor Honda installed at the factory. Works with your factory exhaust. Works with most aftermarket headers too. If you're running an aftermarket header you might need a defouler to get the sensor reading correctly because the sensor location changes slightly, but the sensor itself is the right part for your Si.
Here's Why Your O2 Sensor Failed
The O2 sensor reads the oxygen content in your exhaust so the ECU can adjust fuel mixture. After 15+ years the sensor gets tired. The internal elements degrade. The electrical connection corrodes. The sensor stops reading accurately. You're getting a check engine light. Or you're not getting a light but the sensor's sending bad data to the ECU. Bad fuel mixture. Rough running. Poor fuel economy. All because the O2 sensor died. Replace it with a new one and the engine runs right again.
Aftermarket Header Compatibility - You Might Need A Defouler
This O2 sensor works with factory exhaust no problem. It also works with most aftermarket headers but here's the thing. When you install an aftermarket header the O2 sensor bung location might not line up perfectly with where the factory location was. The sensor might be reading exhaust that's still too hot or not fully mixed. That's where a defouler comes in. A defouler is a spacer that sits between the sensor and the header. It gives the exhaust time to cool and mix before it hits the sensor. We've seen people install an O2 sensor on an aftermarket header and the car still throws codes because the sensor's reading wrong. A defouler fixes that immediately. If you're running an aftermarket header ask about a defouler. If you're running factory exhaust you don't need one.
Genuine Denso Sensor - The Right Part
This is genuine Denso part number 36531-RRA-013. It's the exact O2 sensor Honda used on 2006-2011 Civic Si cars. The sensor element is the right type for your engine. The electrical connector matches your wiring. The thread size and length match your header or manifold perfectly. Aftermarket O2 sensors are cheaper. Some work fine. Some read wrong. We've seen cheap aftermarket sensors that are way too sensitive. They throw codes when they shouldn't. We've seen sensors that read high or low consistently so the ECU can't tune correctly. The O2 sensor controls your air fuel mixture. It's not where you gamble with cheap parts. Buy the Denso sensor. It reads right. It lasts. You install it once and you're done.
What You Get
- Denso O2 sensor - part number 36531-RRA-013
- Fits 2006-2011 Honda Civic Si
- Genuine Denso replacement sensor
- Direct bolt-in replacement
- Factory-spec connector
- Works with factory and most aftermarket exhausts
Note: Denso O2 sensor for 2006-2011 Honda Civic Si (OEM part number 36531-RRA-013). Genuine Denso replacement for factory sensor. Direct bolt-in installation. Works with factory exhaust systems and most aftermarket headers. When using with aftermarket header, defouler may be required to ensure proper sensor reading and prevent check engine light. O2 sensor reads oxygen content in exhaust to allow ECU to adjust fuel mixture. Failed sensor causes check engine light, rough running, poor fuel economy, incorrect fuel mixture. Replace when light appears or if sensor reading is inaccurate. One sensor per order.