FITMENT
Compatible with Hino and Toyota heavy-duty diesel trucks equipped with SCR (Selective Catalytic Reduction) AdBlue emission systems requiring NOx monitoring.
Common applications include:

• Hino Ranger
• Hino Profia
• Toyota heavy-duty truck platforms (regional diesel variants)
• Detroit Diesel SCR aftertreatment systems (cross-application usage)
  Using reference numbers:
• 89463-37021 / 8946337021
• 5WK9 6715A / 5WK96715A (Continental/VDO sensor family)

Typically installed in SCR exhaust systems to ensure emission compliance and proper AdBlue dosing control.

FAQ
Q1: What is the function of this NOx sensor?
A1: It measures nitrogen oxide (NOx) levels in the exhaust system and sends real-time data to the ECU to regulate AdBlue/DEF injection and reduce emissions.

Q2: Where is it installed?
A2: It is installed in the SCR exhaust aftertreatment system, usually upstream or downstream of the catalytic converter depending on engine setup.

Q3: What are symptoms of failure?
A3: Check engine light, SCR/AdBlue system warnings, NOx sensor fault codes, reduced engine power, or limp mode activation.

Q4: Is 89463-37021 interchangeable with 5WK9 6715A?
A4: Yes, 89463-37021 is the OEM reference number and 5WK9 6715A is the sensor manufacturer cross-reference for the same SCR NOx sensor unit.