21151 Febi Lambda Sensor

Febi 21151 Oxygen Sensor

Description

The Febi Lambda Sensor, also known as an Oxygen Sensor, is a critical component for monitoring exhaust gases. It's used in engine management systems to ensure optimal air-fuel mixture for efficient combustion. This sensor helps maintain catalytic converter performance and reduces harmful emissions. This particular unit features a cable length of 1500mm, 4 connecting cables, an M18 x 1,5 outside thread, and a 22mm wrench size. It measures 80 x 50 x 160 mm and is manufactured in Brazil. The MPN for this product is 21151.

Key Features & Benefits

These little guys actually measure the amount of unburned oxygen left in your exhaust. It’s basically checking how well your engine is burning the fuel. They send that information as a voltage reading to your car’s computer – the engine control unit, or ECU – so the computer can adjust the fuel mixture. It's constantly working to keep things running just right. Think of it as a key part of your engine’s feedback system. It doesn’t make anything happen directly, it just reports information. That report allows the computer to fine – tune the air – fuel ratio. There are usually multiple sensors; one before the catalytic converter, and sometimes one after to monitor the converter’s efficiency. The one before is the primary one for fuel trim.

Symptoms, Risks & Replacements

If this sensor goes bad, your car’s computer gets inaccurate information. That throws off the fuel mixture. You’ll likely notice if it’s really bad – things like poor gas mileage, rough idling, or even a failed emissions test. It can also damage the catalytic converter over time if the mixture is too rich. You can find replacements easily enough; Fixparts Online has a pretty good selection if you’re looking. It's a relatively inexpensive part to replace, and keeping it working properly can save you money and headaches down the road. It acts like a shield, protecting other, more expensive parts from damage caused by a poorly running engine. Product information is provided for reference only. The part number and compatibility with your equipment are decisive when selecting the correct item.

Warranty Information

Febi Oxygen Sensor (MPN 21151) comes with a 3-year warranty.