Best Oxygen Sensor Relays of 2026
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Oxygen sensor relays are electronic components that play a crucial role in the proper functioning of vehicles. These relays are responsible for monitoring the oxygen levels in the exhaust gases and sending this information to the engine's computer. This data is then used to adjust the air-to-fuel ratio, ensuring that the engine runs efficiently and emits fewer pollutants. Oxygen sensor relays are designed to be durable and reliable, and they are available in a variety of designs to fit different types of vehicles. With their critical role in emissions control, oxygen sensor relays are an essential component for any modern vehicle.
At a Glance: Our Top Picks
Top 10 Oxygen Sensor Relays
Amrxuts Downstream Oxygen Sensor 234-4829
The Amrxuts Oxygen Sensor is designed to help you fix engine light problems, ensuring your car runs smoothly without warning signals. This sensor is built with durability in mind, so you can count on it to last a long time and reduce the need for frequent replacements. By improving your vehicle’s fuel economy, it helps you save money on gas while reducing emissions. Plus, it comes brand new and is thoroughly tested before shipping, giving you confidence in its safety and reliability every time you install it.
VAKUUM 39210-2G850 Downstream Oxygen Sensor
The VAKUUM Oxygen Sensor is designed as a reliable replacement for your vehicle's downstream oxygen sensor. Made from durable materials, this sensor ensures long-lasting performance and resistance to wear. Its design allows for easy installation, helping you save time and effort during replacement. The product comes with multiple OE numbers, making it compatible with a variety of car models, so you can be confident it fits your vehicle. If you have any issues, the manufacturer promises prompt and satisfactory solutions to address your concerns, providing peace of mind with your purchase.
ZTBH Oxygen Sensor 89465-53060 for SXE10 3SGE
The ZTBH Oxygen Sensor is a reliable replacement part designed to fit directly onto your SXE10 3SGE vehicle, making installation straightforward and hassle-free. It matches the original part number 89465-53060, ensuring it meets the exact specifications needed for optimal performance. The sensor is built to last, offering durability that helps you avoid frequent replacements and saves you money over time. Additionally, it comes in the color shown in the pictures, so you know exactly what to expect. If you ever have questions or concerns, customer support is available online 24/7 to assist you.
YOMAJURU Oxygen Sensor 37240-PT0-014
The YOMAJURU Oxygen Sensor is designed to help monitor your vehicle’s oxygen levels efficiently. This sensor plays a key role in managing your engine’s air-fuel mixture, which can improve fuel efficiency and reduce emissions. By using this sensor, you can ensure your car runs smoothly and stays environmentally friendly. It’s an essential part for maintaining your vehicle’s performance and helps you avoid costly repairs by detecting issues early. If you want reliable and accurate oxygen sensing, the YOMAJURU Oxygen Sensor is a great choice for your car’s needs.
ZTBH Oxygen Sensor 234-5010/234-4355 Set
The ZTBH Oxygen Sensor Set offers a direct replacement solution for your vehicle, making installation straightforward and hassle-free. Designed with durability in mind, these sensors provide a long-lasting performance that helps you avoid frequent replacements. The set includes parts with OEM numbers 234-5010 and 234-4355, ensuring compatibility and reliability. Plus, with around-the-clock customer support, you can get help whenever you need it. This makes the ZTBH Oxygen Sensor Set a convenient and dependable choice for maintaining your car’s emissions system.
ZTBH 2pcs Oxygen Sensor 234-4968 FL3Z-9G444-D
The ZTBH Oxygen Sensor Pair is designed as a direct replacement for your vehicle’s oxygen sensors, ensuring easy installation without the need for modifications. Made with durability in mind, these sensors offer a long service life, which means you won’t have to worry about frequent replacements. They come in the color shown in the pictures, so you know exactly what to expect. With OEM-quality parts, this product guarantees reliable performance for the 5.0L engines from 2015-2017. This makes the ZTBH Oxygen Sensor Pair a convenient and dependable choice for maintaining your vehicle’s emissions system.
VAKUUM Oxygen Sensor 0258030144
The VAKUUM Oxygen Sensor is designed to fit a range of models, including 226901841R and 0258030336, ensuring compatibility with your vehicle’s system. This sensor uses durable materials, so you can count on it to last and handle everyday driving conditions. Installation is straightforward, meaning you won’t need special tools or professional help to get it working. If you have any questions or issues, the manufacturer promises quick and helpful support, giving you peace of mind with your purchase. The VAKUUM Oxygen Sensor is a practical choice for maintaining your vehicle’s performance.
ZTBH 036906262D Oxygen Sensor
The ZTBH Oxygen Sensor is a reliable direct replacement part designed to fit your vehicle perfectly. Its durable construction ensures it will last a long time, saving you from frequent replacements. The sensor is made to match the original equipment manufacturer (OEM) specifications, which means it meets high standards for quality and performance. Plus, it comes in the color shown in the pictures, so you know exactly what you're getting. If you have any questions or need assistance, ZTBH offers 24-hour online support to help you anytime.
LJSM Oxygen Sensor 234-4396 Replacement
The LJSM Oxygen Sensor is designed as a reliable replacement for several part numbers including 234-4396 and LF66-18-861 series. This sensor is made from durable materials, ensuring it lasts and performs well under various driving conditions. It’s built to fit easily, making installation a straightforward task for you without requiring complex tools or professional help. Plus, if you have any concerns about the product, the manufacturer offers prompt and satisfactory solutions to address your needs quickly. With this sensor, you get a quality part that helps maintain your vehicle’s efficiency and emissions control.
ZTBH Oxygen Sensor for TRN220L Series 89467-04080
The ZTBH TRN Oxygen Sensor is designed as a direct replacement for your vehicle, making installation straightforward and hassle-free. It comes with the exact OEM number 89467-04080, ensuring it fits perfectly with your TRN220L, TRN225L, or TRN240L models. This sensor is built to last, offering durability that helps you avoid frequent replacements. Plus, its reliable performance contributes to better engine efficiency and lower emissions. If you ever have questions or concerns, the company provides 24/7 online support to assist you anytime.
Frequently Asked Questions (FAQs)
1. Is there a relay for O2 sensor?
Yes, the O2 sensor's heater circuit is often controlled by a relay. If the O2 sensor heater circuit's negative wire goes directly to ground, a short-to-power problem may be present. In such cases, the heater circuit is usually controlled by a relay.
2. What are the common causes of O2 sensor failure?
Oxygen sensor failure can be caused by age and high mileage, internal contaminants (poisoning), or electrical issues. It is recommended to inspect or replace one or two wire unheated oxygen sensors every 30,000 miles to prevent failure.
3. What happens when an oxygen sensor goes bad?
A bad oxygen sensor can cause rough idle, loss of engine power, poor acceleration, engine misfires, and even stalling. It disrupts essential engine functions like timing, combustion intervals, and air-fuel ratio.
4. What module controls the O2 sensor?
The engine computer, also known as the Powertrain Control Module (PCM), controls the O2 sensor. It uses the input from the upstream O2 sensor(s) to readjust the fuel mixture for optimum emissions, fuel economy, and performance.
5. Can I drive with a failing O2 sensor?
It is not recommended to drive with a bad oxygen sensor. A failing sensor can cause the powertrain to run on an incorrect fuel mixture, potentially leading to issues like clogged catalytic converters.
6. What can kill an oxygen sensor?
Oxygen sensors can fail due to exposure to certain types of silicone compounds, oil fouling from an oil-burning engine, or the presence of tetra-ethyl lead in gasoline.
7. What are the symptoms of a malfunctioning oxygen sensor?
Symptoms of a malfunctioning oxygen sensor include a check engine light, noticeable loss of fuel efficiency, sulfur or 'rotten egg' smell from the exhaust, black smoke from the exhaust, high emission levels, and engine hesitation, skipping, bucking, or power surges.
During our oxygen sensor relay research, we found 24 oxygen sensor relay products and shortlisted 10 quality products. We collected and analyzed 3,099 customer reviews through our big data system to write the oxygen sensor relays list. We found that most customers choose oxygen sensor relays with an average price of $73.71.
The oxygen sensor relays are available for purchase. We have researched hundreds of brands and picked the top brands of oxygen sensor relays, including Amrxuts, VAKUUM, ZTBH, YOMAJURU, LJSM. The seller of top 1 product has received honest feedback from 80 consumers with an average rating of 4.8.
Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.