You’ll fix that nagging check engine light faster in 2026 should you choose O2 sensors built for your exact Honda. Start with a 2-pack upstream plus downstream set for Accord 2.4L 2013-2017, Acura ILX 2016-2020, or TLX 2.4L 2015-2020 (OEM 234-9131, 234-4574). For Accord 2003-2007, pick TAUTOY 234-9040 upstream. For Civic 2007-2011, use the 2-piece 234-9124 and 234-4350 set. Civic 2006-2015 2PCS kits finish the list, and there’s more help ahead.
| 2-Pack O2 Sensors for Honda Accord Acura ILX TLX |
| Best Newer-Model Fit | Vehicle fitment: Accord 2.4L (2013-2017); ILX (2016-2020); TLX 2.4L (2015-2020) | Sensor position: Upstream + Downstream | Pieces included: 2-pack | VIEW LATEST PRICE | Read Our Analysis |
| Upstream O2 Oxygen Sensor for Honda Accord 2.4L |
| Best Upstream Replacement | Vehicle fitment: Accord 2.4L (2003-2007 trims listed) | Sensor position: Upstream | Pieces included: 1 piece | VIEW LATEST PRICE | Read Our Analysis |
| 2Pcs O2 Sensors for 2007-2011 Honda Civic 1.8L |
| Best Civic Pair Pack | Vehicle fitment: Civic 1.8L (2007-2011) | Sensor position: Upstream + Downstream | Pieces included: 2 pieces | VIEW LATEST PRICE | Read Our Analysis |
| O2 Sensors for Honda Accord 2003-2007 2.4L |
| Best Complete Accord Set | Vehicle fitment: Accord 2.4L (2003-2007 trims listed) | Sensor position: Upstream + Downstream | Pieces included: 2-piece set | VIEW LATEST PRICE | Read Our Analysis |
| Honda Civic 2006-2015 Upstream+Downstream O2 Sensors 2PCS |
| Best Broad Civic Coverage | Vehicle fitment: Civic 1.8L (2006-2015) | Sensor position: Upstream + Downstream | Pieces included: 2PCS | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
2-Pack O2 Sensors for Honda Accord Acura ILX TLX
Should you drive a Honda Accord 2.4L (2013 through 2017) or an Acura ILX (2016 through 2020) or TLX 2.4L (2015 through 2020), this 2-pack oxygen sensor set can feel like the “finally, I’ve got the right parts” choice. You get both upstream and downstream sensors, so you won’t mix and match and hope.
Next, you can shop smarter using the reference numbers 234-9131 and 234-4574. Before you click buy, check your year, make, and model. Then compare the photos and specs to your old sensors for a clean, direct fit.
- Vehicle fitment:Accord 2.4L (2013-2017); ILX (2016-2020); TLX 2.4L (2015-2020)
- Sensor position:Upstream + Downstream
- Pieces included:2-pack
- Part numbers:234-9131 + 234-4574
- Construction/material:Not specified (compare to OE)
- Warranty/guarantee:Not specified
- Additional Feature:Upstream + downstream set
- Additional Feature:Direct-match replacement fit
- Additional Feature:Image/spec comparison guidance
Upstream O2 Oxygen Sensor for Honda Accord 2.4L
In case your Honda Accord 2.4L feels a little sluggish, burns more gas than it used to, or throws a stubborn check engine light, the TAUTOY 234-9040 upstream air fuel ratio sensor can be the steady “translator” your engine needs. It reads oxygen partial pressure with high accuracy, helping your ECU keep the air fuel mix on target for smoother pulls and steadier idle.
It fits many 2003 to 2007 Accord 2.4L trims and cross matches common OEM numbers like 36531RAAA01. The double laser welded stainless body handles heat up to 1600°F. You get one upstream sensor, a 1 year warranty, and Amazon 30 day returns.
- Vehicle fitment:Accord 2.4L (2003-2007 trims listed)
- Sensor position:Upstream
- Pieces included:1 piece
- Part numbers:234-9040
- Construction/material:Stainless steel body (double laser-welded)
- Warranty/guarantee:1-year warranty
- Additional Feature:1600°F temperature rating
- Additional Feature:0–25% measuring range
- Additional Feature:Double laser-welded body
2Pcs O2 Sensors for 2007-2011 Honda Civic 1.8L
Finding the right O2 sensors gets a lot easier should you drive a 2007 to 2011 Honda Civic 1.8L and you want a sure fit without the guesswork. This BELKEBIR 2-piece set fits DX, EX, EX-L, LX, and LX-S 1.8L models, and it’s built to factory specs, so it bolts in cleanly. You’ll replace both front and rear sensors using common cross refs like 234-9124 up front and 234-4350 in back.
Next, you’ll feel the payoff. Smart sensing feeds real-time signals, helping MPG, throttle response, and emissions. Platinum and ceramic parts handle 800°C heat with ±1% accuracy.
- Vehicle fitment:Civic 1.8L (2007-2011)
- Sensor position:Upstream + Downstream
- Pieces included:2 pieces
- Part numbers:234-9124 (front) + 234-4350 (rear)
- Construction/material:Platinum + ceramic components
- Warranty/guarantee:Not specified
- Additional Feature:Smart sensing technology
- Additional Feature:Premium platinum/ceramic parts
- Additional Feature:±1% measurement accuracy
O2 Sensors for Honda Accord 2003-2007 2.4L
In case you drive a 2003 to 2007 Honda Accord with the 2.4L engine and you’re tired of random check engine lights or rough fuel mileage, this two sensor set is a smart, stress saving match because it covers both the upstream and downstream positions in one go. You get 234-9040 up front and 234-4797 after the cat.
That pairing matters because your Accord needs clean signals for fuel control and catalyst checks. Double laser welded stainless steel helps it last, while the sensing tech reads oxygen partial pressure with tight accuracy. It fits DX, LX, EX, SE, and Special Edition trims, and includes a 1 year warranty.
- Vehicle fitment:Accord 2.4L (2003-2007 trims listed)
- Sensor position:Upstream + Downstream
- Pieces included:2-piece set
- Part numbers:234-9040 (up) + 234-4797 (down)
- Construction/material:Stainless steel (double laser-welded)
- Warranty/guarantee:1-year warranty
- Additional Feature:Advanced sensing technology
- Additional Feature:Oxygen partial pressure measurement
- Additional Feature:Optimized air-fuel control
Honda Civic 2006-2015 Upstream+Downstream O2 Sensors 2PCS
You’ll love this 2PCS upstream and downstream oxygen sensor set should you drive a 2006 to 2015 Honda Civic 1.8L and you’re tired of surprise check engine lights, rough idles, or gas mileage that keeps slipping. You get both key sensors: the upstream 234-9124 and downstream 234-4350, so your Civic can breathe properly once more.
Because it’s plug and play, you’ll swap them in without hacks or additional wiring. Then your engine can hold steady, respond quicker, and waste less fuel. The build feels tough, it matches OE performance, and you’re covered with a 1 year warranty with support within 24 hours.
- Vehicle fitment:Civic 1.8L (2006-2015)
- Sensor position:Upstream + Downstream
- Pieces included:2PCS
- Part numbers:234-9124 (up) + 234-4350 (down)
- Construction/material:Not specified (durable construction)
- Warranty/guarantee:1-year warranty
- Additional Feature:Plug-and-play design
- Additional Feature:No modification required
- Additional Feature:24-hour support response
Factors to Consider When Choosing Oxygen Sensors for Honda
To pick the right oxygen sensor for your Honda, you’ve got to match fitment to your exact year, engine, and trim, and you’ll also need to choose the correct spot because upstream and downstream sensors don’t do the same job. Next, you should crosscheck the OEM part number so you don’t waste time on a “close enough” match that triggers a stubborn check engine light. Then, you’ll want strong sensor materials for long life and the right connector and install style, because nobody wants a plug that won’t click in or a sensor that fights you the whole way.
Vehicle Fitment Match
Why does fitment matter so much in case you’re buying an oxygen sensor for your Honda? Because one small mismatch can turn a simple fix into a stubborn check engine light, rough idle, or a plug that just won’t click in. So initially, match the sensor to your exact Honda make, model, engine size, and production year. An Accord, Civic, or Acura ILX or TLX might look similar, yet their engines and year ranges demand different sensors. Next, compare OEM part numbers, or the approved part number range, so you don’t gamble on function. Then, check the connector type, wire length, and mounting style against your original sensor. Whenever everything lines up, installation feels calm, not chaotic.
Upstream Vs Downstream
How do you know whether the oxygen sensor you need is the one that guides your Honda’s fuel mix or the one that checks the catalytic converter’s health? Start with considering location and job. An upstream sensor sits before the catalytic converter, and it watches the air fuel ratio so your ECU can tweak fuel injection fast. That helps power feel smooth and can save gas.
Next, look at what it measures. Upstream sensors read a wider range, up to 100 percent, so they can report fine changes. A downstream sensor lives after the converter, and it reads a smaller range, up to 25 percent, to see how well the converter cleans exhaust. In case the converter struggles, it flags trouble. Both send crucial electrical signals.
OEM Part Number Crosscheck
Picking the right upstream or downstream sensor is only half the battle, because even the correct location won’t help provided the part itself doesn’t match your Honda. So, before you buy, check the OEM part number in your owner’s manual, service info, or dealer catalog, then match it to the sensor listing.
Next, cross reference any alternate OEM numbers, since Honda might update numbers across model years, trims, or engine types. This small step can save you from a “fits most” sensor that plugs in, yet reads wrong.
Also, use the OEM number to confirm you’re buying the correct sensor type for that exact exhaust position. If the number matches, you keep smooth drive feel, clean emissions, and steady fuel economy.
Sensor Materials And Durability
Although an oxygen sensor looks like a small plug-in part, the materials inside it decide whether your Honda runs smooth for years or starts acting up after a few hot months. You’ll want platinum and ceramic parts because they react fast and stay stable as soon as the exhaust gets brutal. In real driving, that heat can climb near 800°C, so weak materials can crack, drift, or give lazy readings.
Next, look at the outer build, since it shields the guts. A double laser-welded stainless steel body helps block vibration, road salt, and corrosion. It also holds up during pressure changes and constant thermal cycling, at the moment the pipe heats up, cools down, then repeats. When you choose higher-grade materials, you replace sensors less often and your air-fuel control stays steady.
Installation And Connector Type
Since your Honda’s oxygen sensor talks to the computer through a very specific plug, the connector type can make or break the whole install. You’ll want a true plug and play match, so you don’t end up cutting wires or paying for an adapter. Start by checking the connector shape, the number of pins, and the pin layout. Next, compare the wiring cable length and routing, because a cable that’s too short will pull and stress the plug.
Then look at how the sensor mounts. Many Honda sensors use a flange mount, and it must line up perfectly with the bolt holes so it seals tight. Finally, hold the new sensor beside the old one before you install it, so you avoid annoying electrical glitches later.
