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20 Best B1S2 Sensor of 2023 – Romance University

After hours researching and comparing all models on the market, Romance University finds out the Best B1S2 Sensor of 2023. Check our ranking below.

2,464 Reviews Scanned

SaleRank No. #1

BW SR-X2V - 4OXV Oxygen (O2) Sensor

GasAlertMicroClip XL
GasAlert MicroClip XT
International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions
GasAlertMax XT II

Rank No. #2

A-Premium O2 Oxygen Sensor Upstream and Downstream Heated Compatible with Chevy, GMC, Saturn, Pontiac Vehicles - Equinox Malibu Captiva Sport Terrain Solstice Vue Sky Aura G6, 2.4L, 2-PC Set

[Vehicle Fitment]: "Upstream (B1S1) and Downstream (B1S2)": Compatible with Chevrolet Captiva Sport 2012-2015 L4 2.4L, Equinox 2010-2014 L4 2.4L, Malibu 2008-2009 L4 2.4L (LT Model), Malibu 2008-2010 L4 2.4L (Hybrid, LS Model), Orlando 2012-2014 L4 2.4L; Compatible with GMC Terrain 2010-2014 L4 2.4L
[Vehicle Fitment]: "Upstream (B1S1) and Downstream (B1S2)": Compatible with Pontiac G6 2008/2010 L4 2.4L, G6 2009 L4 2.4L (4 Speed Transmission), Solstice 2008-2009 L4 2.4L; Compatible with Saturn Aura 2007-2009 L4 2.4L, Sky 2008-2010 L4 2.4L, Vue 2008-2010 L4 2.4L
[Reference Number]: 12606671, 19187281, 12597947, 12618010, 12618012, 250-24708, 234-4242, 2344242, 250-24704, 25024704
[Specification]: ① Wire Quantity: 4/4; ② Overall Length: 400/420 mm; ③ Mounting Type: Threaded; ④ Sensor Type: Heated; ⑤ Connector Gender: Male/Female; ⑥ Package Quantity: 2x Oxygen Sensor; ⑦ Packaging Type: Box
[Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted O2 Oxygen Sensor. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind.

Rank No. #3

Nifeida 234-4400 O2 Oxygen Sensor Downstream B1S2 Heated Air Fuel Ratio Sensor Compatible with Toyota Highlander Sienna Prius V Plug-in Lexus RX350 RX450H CT200h OEM # 894650E120 8946508120

🔧Application: Nifeida Oxygen Sensor 234-4400 fit for Toyota Highlander 2011-2017, Toyota Prius 2010-2015, Toyota Prius Plug-In 2012-2015, Toyota Prius V 2012-2017, Toyota Sienna 2015-2016; Lexus CT200h 2011-2017, Lexus RX350 2014-2015/2011, Lexus RX450h 2010-2015.
🔧Advantage: Made of high-quality materials, strong durability. Nifeida O2 Sensor can improve engine performance and fuel economy, improve the overall vehicle operation performance, and enhance environmental protection.
🔧Easy Installation: Manufactured to OE specification fit form and function, durable. Install directly, without change. Reference OE Number: 250-24870, 350-34074, 234-4400, 2344400, 8946508120, 894650E120, 894650E140, 8946547080, 8946548270. Package Quantity: 1x Oxygen Sensor.
🔧Notes: Please check carefully your vehicle year & make & model in the product description to avoid any wrong purchase. Please check your part pictures with our pictures, especially the plug, it must be completely same. Please contact us if any question of fitment.
🔧Professional Manufacturing: ALL Nifeida oxygen sensors are extensively tested during manufacturing to guarantee quality and reliability, always meet or exceed the original equipment specifications.

Rank No. #4

A-Premium O2 Oxygen Sensor Compatible with Nissan Frontier 2005-2012 & Suzuki Equator 2009, 2.5L, Upstream and Downstream, 2-PC Set

[Vehicle Fitment]: Compatible with Nissan Frontier 2005-2012 L4 2.5L Upstream & Downstream; Compatible with Suzuki Equator 2009 L4 2.5L Upstream & Downstream
[Reference Number]: 250-25159, 25025159, 250-24951, 25024951
[Specification]: ① Wire Quantity: 4; ② Sensor Type: Heated; ③ Mounting Type: Threaded; ④ Connector Gender: Male; ⑤ Package Quantity: 2x Oxygen Sensor; ⑥ Packaging Type: Box
[Quality Construction]: Manufactured from premium materials for a long lifespan; Quick and easy installation, requiring no special tools
[Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted O2 Oxygen Sensor. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind.

Rank No. #5

A-Premium O2 Oxygen Sensor Compatible with Honda Civic 2016 2017 2018 2019 2020 2021, 2.0L, Downstream & Upstream, 2-PC Set

[Vehicle Fitment]: Compatible with Honda Civic 2017-2021 L4 2.0L, Civic 2016 L4 2.0L (LX; EX; LX-P) --- Downstream & Upstream, It fits models with Naturally Aspirated, B1S1, B1S2
[Reference Number]: 250-241196, 250-25137, 250241196, 25025137
[Specification]: ① Wire Quantity: 4 & 5; ② Sensor Type: Heated; ③ Mounting Type: Threaded; ④ Connector Gender: Male; ⑤ Package Quantity: 2x Oxygen Sensors; ⑥ Packaging Type: Box
[Quality Construction]: Manufactured from premium materials for a long lifespan; Quick and easy installation, requiring no special tools
[Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted oxygen sensors. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind.

Last update on 2025-07-03 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

How Do You Buy The Best B1S2 Sensor?

Do you get stressed out thinking about shopping for a great B1S2 Sensor? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching B1S2 Sensor, which is why we have assembled a comprehensive list of the greatest B1S2 Sensor available in the current market. We’ve also come up with a list of questions that you probably have yourself.

Romance University has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for B1S2 Sensor that you consider buying. Your questions might include the following:

Is it worth buying an B1S2 Sensor?
What benefits are there with buying an B1S2 Sensor?
What factors deserve consideration when shopping for an effective B1S2 Sensor?
Why is it crucial to invest in any B1S2 Sensor, much less the best one?
Which B1S2 Sensor are good in the current market?
Where can you find information like this about B1S2 Sensor?

We’re convinced that you likely have far more questions than just these regarding B1S2 Sensor, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for B1S2 Sensor, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible B1S2 Sensor. Make sure that you are only using trustworthy and credible websites and sources.

Romance University provides an B1S2 Sensor buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available B1S2 Sensor currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

Brand Value: Every brand of B1S2 Sensor has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
Features: What bells and whistles matter for an B1S2 Sensor?
Specifications: How powerful they are can be measured.
Product Value: This simply is how much bang for the buck you get from your B1S2 Sensor.
Customer Ratings: Number ratings grade B1S2 Sensor objectively.
Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their B1S2 Sensor.
Product Quality: You don’t always get what you pay for with an B1S2 Sensor, sometimes less, and sometimes more.
Product Reliability: How sturdy and durable an B1S2 Sensor is should be an indication of how long it will work out for you.

Romance University always remembers that maintaining B1S2 Sensor information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

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FAQ:

Q: What does Bank 1 and Bank 2 mean on an O2 sensor?

A: bank 1 is the drivers side bank, so b1s1 would be the drivers side closest to the engine. if the truck is equipped with several 02 sensors then bank 2 or b2s1 would be passenger side closest to the engine. those are called upstream o2 sensors and the others downstream b1s2 and b1s2 b= bank 1= drivers side s=sensor 2=downstream. hope this helps.

Q: What does a p0136 b1s2 O2 sensor error mean?

A: A P0136 B1S2 means that the sensor located behind the catalytic converter is having this problem. When one O2 sensor is sidelined, the burden is divided among the others, causing all of them to work harder.

Q: Where is the b1s2 catalytic converter located?

A: B1S2 is under the vehicle behind the catalytic converter mounted in the exhaust pipe. You only have 2 for this vehicle. when you stand on the side of the vehicle on the passenger side , Cylinder 1 is the first one on the left. 1,3,5 on the left , 2,4,6 on the right.

Q: Where is the b1s1 O2 sensor on a 2004 Toyota Sequoia?

A: B1S1 is before the catalytic converter. B1S2 is after. Check your wires going to the sensors. Sounds like one may be shorted to ground. Make sure they are not against the exhaust. 2004 Sequoia B2S1 o2 sensor – where is this located and is it easy to replace? Thank You! Toyota Sequoia has 4 oxygen sensors… two on each side.

B1S2 Sensor