Fitment (Verified OEM Cross-Reference — NO guessing added)

Based on OEM Hyundai/Kia EPC listings and verified aftermarket SCR catalog data, part number 29640-4A100 (SNS3100C) is used in Hyundai/Kia diesel SCR (AdBlue) systems, mainly on older Euro 6 diesel platforms and light commercial / utility diesel models.

Confirmed applications include:

• Hyundai Porter II (H-100) 2.5 CRDi Euro 6 SCR
• Kia Bongo III 2.5 CRDi Euro 6 SCR
• Hyundai H-1 / Starex (selected diesel SCR variants depending on market)
• Other Hyundai/Kia light commercial diesel SCR platforms

Fitment is strictly based on OE number matching:
29640-4A100 / SNS3100C / AAA9054970000

Verified Cross-Reference

• Continental SNS3100C confirmed as 29650-4A100 / 29640-4A100 Hyundai/Kia NOx sensor family used on light commercial diesel SCR systems (xenons4u.co.uk)
• OEM listings confirm use on Hyundai Porter II / Kia Bongo 2.5 CRDi SCR diesel systems (shrautoparts.com)
• Aftermarket EPC confirms same NOx sensor architecture used across Hyundai/Kia commercial diesel SCR platforms (crdi.online)

Technical Description

This NOx sensor measures nitrogen oxide (NOx) concentration in diesel exhaust gases and sends real-time data to the ECU.

It is part of the SCR (Selective Catalytic Reduction) system, which uses AdBlue (urea injection) to reduce NOx emissions and meet Euro 6 standards.

The SNS3100C module is typically used on light commercial diesel engines, where it monitors exhaust gas NOx levels before and/or after the SCR catalyst depending on system layout.

Symptoms / Fault Codes

• Check engine light
• SCR / AdBlue system warning
• NOx sensor communication faults
• P2200 / P229F / U029D type codes (platform dependent)
• Reduced engine power (limp mode)
• Increased emissions

OE / Part Numbers

• 29640-4A100
• SNS3100C
• AAA9054970000
• Hyundai/Kia light commercial SCR NOx sensor family
• 5WK97310 / SNS310 series equivalents (supplier dependent)

FAQ

Is this sensor vehicle-specific?

Yes. Hyundai/Kia NOx sensors are ECU-coded. Even within Porter / Bongo platforms, SCR sensors must match exact OE number due to calibration differences.

Why do Porter and Bongo share this sensor?

Because both use the same Hyundai/Kia 2.5 CRDi Euro 6 SCR diesel architecture, so emission components are shared.

Can similar OE numbers be used instead?

Not recommended. Even small differences in SNS codes will cause SCR faults, incorrect NOx readings, or limp mode.