How do you choose the right NOx sensor?

Diesel vehicles often have two NOx sensors: one before and one after the SCR catalyst. They are not interchangeable. Always check the OE number on the connector or in the parts catalogue, plus cable length. Unsure whether you need upstream or downstream? Send the VIN and we will identify the part.

Related: What does a NOx sensor do? · Catalytic converters · DPF / particulate filters

When is DPF cleaning worthwhile?

• Poor performance or rising fuel consumption
• DPF warning light on
• Forced regeneration did not help
• The ceramic is still intact (no melt or cracks)

If the filter is mechanically broken, order a new DPF.

How it works

1. Ship or drop off in Nazareth or Brussels
2. Professional cleaning with industrial equipment
3. Check and return

Request a cleaning via the form on this page.

How do you order the right injector?

The injector has a unique number. Always order on that number, not just make and model: common-rail injectors are calibration-sensitive. After fitting, the correction values (IMA/IQA/C2i/C3i depending on brand) must be written into the ECU. Our technical team will help match the part. See also Faulty diesel injector?

How do you choose the right turbo?

Order on the number on the old turbo or in the parts catalogue. Housing, actuator and VNT/VTG spec must match. After fitting, check oil feed and return; most turbo failures come from lubrication or foreign objects, not the core itself. FastParts technical support will match the OE number.

High-pressure pumps for reliable fuel flow

When do you need a new catalytic converter?

Typical signs: emissions test fail, rattling core, sulphur smell, engine light, or loss of power. A melted or broken ceramic cannot be repaired. Match length, connections and OBD type to the vehicle. FastParts lists brands such as AS and BM Catalysts among others.