Purifilter® delivers a durable and cost-effective solution to your environmental mandates. Specialized silicon carbide filtration media and a unique catalyst combination enable Purifilter® to provide more efficient filtration and higher durability than traditional diesel particulate filters (DPFs). Purifilter® minimizes operational impact on your daily fleet operations while enabling you to comply with stringent regulation requirements.


Verified compliance with optimized fleet operations.

Purifilter® is CARB- and EPA-approved to work with a variety of heavy-duty, on-road applications that include delivery, drayage, refuse and public fleet vehicles as well as buses – providing superior emissions reduction and noise attenuation performance.

Purifilter® was the first passively-regenerating DPF to achieve an industry-leading particulate matter reduction credit value - reducing PM by up to 90% while oxidizing more than 75% of carbon monoxide and 85% of hydrocarbons.* Under common operating conditions, Purifilter® automatically oxidizes accumulated particles. The California Air Resources Board (CARB) verified Purifilter as a Level 3+ reduction technology, reducing particulate emissions by at least 85%.

Self-regeneration minimizes maintenance.

Purifilter® advanced materials enable the DPF to regenerate (or clean) itself – providing exceptional durability, high temperature tolerance and filtration performance, with low reactivity to lube ash and fuel additives. The system’s silicon carbide filter substrate and honeycomb design work together with a proprietary catalyst coating – reducing soot combustion temperatures to the normal exhaust temperature range of diesel engines. This design continually regenerates the filter to minimize maintenance obligations, ownership costs and fleet downtime.

Designed for your specific application.

Purifilter® is available in a variety of configurations to fit your specific application. For details regarding regulatory approvals, please visit our verifications page or download a product flyer. To discuss your specific application, please feel free to contact us.

Purifilter Product Sheet

*Current verified technology reduction values are dependent upon the specific engine type and application.