Q621328

Description

Overview

Q621328 is a DPF used in the diesel particulate filter section of the exhaust aftertreatment system. It is designed for VOLVO engines and supports soot capture and particulate matter control in heavy duty service. Volvo supplies heavy duty diesel engines for class 8 highway tractors and vocational trucks. This part number is marked as discontinued. The information on this page is provided for service history and cross reference purposes.

What this part does

This diesel particulate filter captures soot from the exhaust stream and stores particulate matter in the filter substrate. During regeneration events the stored soot is burned off, which helps keep backpressure under control and protects components downstream in the system.

Where this part fits

This part is generally used on VOLVO engine platforms installed in class 8 trucks and heavy equipment. Exact fitment depends on the specific engine family, emission level, and chassis configuration.

OEM and cross references

This part may replace or cross reference the following numbers:

• DPF

Installation and replacement notes

• Confirm compatibility with the engine family and emission certification level before ordering.
• Inspect related components for damage or contamination that may have contributed to the original failure.
• Follow OEM torque specifications and service procedures during installation.
• When replacing a DPF it is good practice to inspect the diesel oxidation catalyst, check differential pressure readings, verify that active and passive regeneration are working correctly, and correct any root causes of soot overload.

Specifications

• Part type: DPF
• OEM or application group: VOLVO
• Additional cross references are listed in the section above.

Related components

During service you may also need clamps, gaskets, sensors, mounting hardware, or additional aftertreatment components depending on the specific installation.