Diesel Particulate Filter and
Diesel Oxidation Catalyst Replacements
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ROADWARRIOR manufactures a wide range of diesel particulate filters (DPFs) and diesel oxidation catalysts (DOCs) for model year 2007 and newer medium duty trucks, buses and heavy duty class 8 diesel trucks. All DPFs and DOCs are guaranteed to install as a direct fit part and work with your truck’s ECU. All ROADWARRIOR DF products are manufactured in North America by ROADWARRIOR to quality standards equaling or exceeding the original part. ROADWARRIOR has stock in five convenient warehouses across North America to ensure that orders reach our customers as quickly as possible.

OEM Direct Fit No Welding or Cutting Newly Manufactured Free Shipping DOCs Contain an All Metallic Substrate Constructed with 409 Stainless Steel Greater Durability vs. OEM Ceramic Substrate In-Stock Designs for all Makes & Models
Customer Testimonials

“…the converter and DPF filter fit perfectly; the truck is running better than it ever has. Thank you for a great product at a great price… I would recommend ROADWARRIOR to anyone that needs DPF filters or converters, they are a great company.”

Donnie Potter
Fleet Maintenance Superintendent
City of Kinston
Kinston N.C.

“ROADWARRIOR manufactures a quality aftermarket product that is a direct-fit with simple cross-reference to the OEM DPF part numbers. We clean our own DPF’s and ROADWARRIOR provides a cost effective alternative. This enables us to buy spare units that are brand new with no need to worry about where the DPF has been like some of the OEM used or re-man products.”

Parts/Purchasing Team Leader
Challenger Motor Freight
Company listed in the Top 100 For-Hire Carriers by Transport Topics 2011