This listing is specifically for the Rear / Downstream / Position 2 NOx sensor, located after the SCR catalyst on the exhaust system. Please confirm that your vehicle requires the rear unit before purchasing.
Vauxhall Insignia Mk II (B) – 2017-Onwards (All 2.0 Diesel Variants)
• Country Tourer (Z18) 2.0 D
• Hatchback (Z18) 2.0 D
• Hatchback (Z18) 2.0 GSi 4x4
• Sports Tourer (Z18) 2.0 D
• Sports Tourer (Z18) 2.0 GSi 4x4
Opel Insignia B – 2017-Onwards (2.0 CDTi / GSi Models)
• Country Tourer (Z18) 2.0 CDTi
• Grand Sport (Z18) 2.0 CDTi
• Grand Sport (Z18) 2.0 GSi 4x4
• Sports Tourer (Z18) 2.0 CDTi
• Sports Tourer (Z18) 2.0 GSi 4x4
Compatible engine codes include B20DTH, D20DTH, D20DTR, ensuring full fitment across all diesel Insignia B variants from 2017 to 2024.
This sensor replaces and corresponds to the following OE and interchange numbers:
OE / OEM Numbers:
• 55512349
• 55487662
Interchange / Cross-Reference Numbers:
• 55 512 349
• 55 487 662
• 0899316
• 0899342
• 70879
• A1062349
• 246717410
If any of these numbers appear on your old sensor or match your vehicle’s parts catalogue, this unit is the correct replacement.
• Type: Nitrogen Oxide (NOx) Sensor
• Placement on Vehicle: Rear / Downstream / Position 2
• Fitment Type: Direct Replacement (Plug & Play)
• Housing: Heat-resistant OE-grade materials
• Connector: Factory-style electrical plug
• Compatibility: Vauxhall / Opel Insignia B 2.0 Diesel (2017-2024)
A faulty NOx sensor can trigger multiple vehicle issues, such as:
• Engine management warning lights
• Increased fuel consumption
• Incorrect exhaust emissions
• DPF regeneration problems
• Reduced engine performance
• Failure to pass emissions testing
Replacing a defective sensor ensures the SCR system works correctly, maintains legal emission levels, and protects the longevity of your DPF and catalytic components.
• 1 × Rear (Position 2) NOx Sensor – OE-equivalent replacement
• Fully tested, sealed, and ready for installation
This sensor has been engineered as a precise OE-spec replacement for the Vauxhall / Opel Insignia B 2.0 diesel line. Whether you are repairing a fault code or restoring full SCR efficiency, this high-quality unit provides long-lasting performance and reliable emissions monitoring.
If you need a durable and accurate replacement for OE part number 55512349 or 55487662, this Position 2 NOx Sensor is the ideal choice.