This is a Nitrogen Oxide (NOx) Sensor designed for Volvo D13B engines in FH4 and FM4 truck models, essential for monitoring and controlling exhaust emissions. Manufactured to precise specifications, it offers reliable readings superior to a faulty sensor that provides inaccurate data. Operators might observe illuminated check engine lights, reduced engine performance, or increased exhaust emissions if this sensor malfunctions.
Always verify with serial number before ordering.
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Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
A failing NOx sensor often triggers a check engine light with specific diagnostic codes related to NOx levels. This can lead to a noticeable decrease in engine power and fuel efficiency as the ECM attempts to compensate. Prolonged operation with a faulty sensor can result in increased pollution and potential regulatory non-compliance.
Ensure the exhaust system is cool before attempting removal and installation to prevent burns. Apply anti-seize compound sparingly to the threads of the new sensor to facilitate future removal.
It is advisable to check the exhaust system for leaks and inspect the Diesel Particulate Filter (DPF) for regeneration issues when replacing the NOx sensor.