Description
LS4163 Oxygen Sensor Lower (Lambda) - After Catalytic Converter
The LS4163 lower oxygen sensor (post-cat lambda sensor) is designed for Ford 1.0 EcoBoost petrol applications. This sensor fits after the catalytic converter and helps the ECU monitor catalyst efficiency and emissions performance.
Vehicle Compatibility
- Ford Transit / Tourneo Connect (V408) 1.0 Petrol (M2GA) 2014-2018
- Ford EcoSport (JK8) 1.0 Petrol (M1JC / M1JJ / M1JU) 2013-2023
- Ford Fiesta (HJ / HF) 1.0 Petrol (SFJE / SFJF / SFJH) 2018-2023
- Ford Focus (CB8) 1.0 Petrol (M1DA) 2012-2018
Specifications
- Sensor position: Lower / post-cat (after catalytic converter)
- Connector: 4 PIN
- Cable length: 800mm
Features
- Designed for post-catalyst monitoring and emissions control systems
- Correct connector and lead length for compatible Ford 1.0 EcoBoost applications
- Helps restore accurate lambda readings when replacing a faulty post-cat sensor
Nationwide delivery available across South Africa. If you’re unsure which oxygen sensor your vehicle uses (upper vs lower), confirm the sensor position on the vehicle before ordering.
Important: Product information, kit contents and compatibility are provided as a guide and may contain errors or omissions. Please verify that this part and any included components are correct for your vehicle before installation. For full details see our Website Disclaimer (Errors & Omissions).

