New NOx sensor range covers 40 million vehicles
24 July 2026 
Valeo Service UK has launched a new Nitrogen Oxide (NOx) sensor range which includes 71 new references.
This expansion provides coverage for more than 40 million passenger cars across European vehicle applications, and Valeo says the new range helps reduce catalogue gaps and gives workshops and distributors greater confidence when sourcing replacement components for complex exhaust systems.
As emissions legislation continues to evolve, accurate monitoring of exhaust gases has become increasingly important. NOx sensors play a critical role within Selective Catalytic Reduction (SCR) systems, measuring nitrogen oxide levels and helping ensure the system can convert harmful emissions into harmless nitrogen and water.
“Modern emission systems are becoming increasingly sophisticated, creating new challenges for independent garages that need reliable replacement parts and accurate technical information,” said Andy Swann, Managing Director at Valeo Service UK. “Our expanded NOx sensor range provides workshops and distributors with quality parts supported by the technical expertise and aftermarket support they need to achieve first-time-right repairs.”
Each sensor has been developed to resist severe engine vibrations and extreme exhaust temperatures, while supporting Euro 6 vehicle requirements where sensors positioned before and after the SCR catalyst monitor system efficiency.
To ensure reliability beyond laboratory conditions, Valeo’s NOx sensors undergo 700 hours of road testing across real driving situations and varying duty cycles.