Used Toyota Oxygen Sensors

All used Toyota Oxygen Sensors listed on Breakeryard.com are tested, original (OEM) manufacturer parts and come with a 14 day money back guarantee. Breakeryard.com list cheap new OES or aftermarket car parts at discounted prices and used OEM car parts up to 80% cheaper than main dealer prices for Toyota from premium breaker yards from across the UK.

About Oxygen Sensors

Part of the car's emission system the Toyota oxygen sensor functions to monitor the levels of oxygen in the vehicle’s exhaust system. The exhaust system includes the exhaust manifold, which is fixed to the cylinder head and takes the exhaust fumes from the engine's cylinders into the exhaust pipe;  a catalytic converter, which sits between the exhaust manifold and the rear exhaust box, and changes the harmful emissions into water vapour and carbon dioxide; the rear exhaust box which acts as an exhaust silencer; and the exhaust pipe through which the exhaust travels, and the means by which the fumes reach the tail pipe where they finally leave the vehicle.  

Oxygen sensors are located in the exhaust pipe, positioned in front of or behind the catalytic converter. 

The oxygen sensors situated at the front measure how much oxygen is in the gas as it leaves the combustion chamber. The oxygen sensors positioned behind the catalytic converter measure how much oxygen is in the gas as it exits the catalytic converter. If there is too much oxygen in the exhaust gas, the gas is referred to as being too 'lean'. If there is too little oxygen in the gas, it is referred to as being too 'rich'.  The fuel to air ratio needs to be exactly right in order for the conditions to be perfect for optimum combustion. If there is not enough air in the mix this causes a surplus of fuel that didn't get burnt in the combustion process which is not good, as this unburned fuel is a pollutant. If there is too much air in the mix, this produces more nitrogen-oxide pollutants in the gas leaving the system and can also lead to reduced performance and damage to engine components. Based on data gathered by the oxygen sensors, the ECU makes adjustments to the amount of fuel flowing into the engine to ensure the oxygen levels in the fuel/air mix are correct. This process ensures emissions are kept as low as possible. The overall result of this ensures the engine is working to its optimum, providing more power and fuel efficiency.

As is often the case with electrical components, the oxygen sensor can fail because of damage caused by corrosion, extreme heat or it can simply wear out. A faulty oxygen sensor will not be able to accurately measure the level of oxygen in the exhaust system so the ECU won't have the right data to make the correct adjustments to manage how much fuel is entering the engine. This leads to poor engine performance and significantly reduces fuel efficiency, while increasing the car's emission output. When replacing this sensor, installing a good quality Toyota oxygen sensor will provide you with a part that is compatible with the make and model of your vehicle.

Toyota trivia

• The Toyota company got its start making automated looms in 1033. Founder Sakichi Toyoda even invented the automated loom and then sold them off to try and get into the car industry. There is still an arm of Toyota that is still in the textile industry!
• As well as the best selling car of all time, Toyota is also responsible for the longest-running production on a car model ever. The Toyota model Land Cruiser started production in 1951, and as of 2019 has sold over 10 million units!
• Toyota has thousands and thousands of patents, and in 2019 it gave away an incredible 23,740 patents that had been awarded over more than 20 years. Those patents were all focused on electric vehicle technology.
• The founder's son, Kiichiro Toyoda, did a trip around the US to get inspiration for car designs. That's why those early Toyota cars look more than a little bit like Chevrolets and Dodge Power Wagons.
• It's not exactly a secret, but surprisingly few people are aware that Toyota also makes a couple of other brand-name cars. That's because they own or partially own Lexus, Subaru, and Scion.