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If searching by ROADWARRIOR part numbers, please use the updated 5-digit format for best results (ex. C001 is now C0001, C0C2-ID is now C0122-ID).

With a diverse product catalog, Roadwarrior is the only aftermarket manufacture to offer customer SCR & One-Box options for Heavy Duty Diesel Engines!
New for your Detroit Diesel: All Roadwarrior C0080-SA & C0088-SA orders now ship with a 2-in-1 Clamp & Gasket in the box!
Roadwarrior will be at the North American Commercial Vehicle Show from October 28-31, 2019. Find us at Booth 2723! Don't forget you can attend the show for FREE as a Roadwarrior Guest. Just use Promo code 1159 for your free ticket to the expo hall.
ROADWARRIOR manufacturing facilityROADWARRIOR has relocated its manufacturing operation to a larger facility which has enabled increased output to meet the rising demand for ROADWARRIOR's DPFs, DOCs and SCRs.
RW_clamp_comb ROADWARRIOR now offers replacement clamps for most DPF and DOC designs, contact your sales representative to learn more or to place an order. UPDATE: For a limited time, ROADWARRIOR will complete the case  - buy 11 clamps, get the 12th for free.* * Offer valid for cases of the same clamp design only, while quantities last.

Roadwarrior Inc. manufactures a broad range of Diesel Particulate Filters (DPFs), Diesel Oxidation Catalysts (DOCs) and Selective Catalytic Reduction (SCRs) for post-2007, medium to heavy duty trucks and buses.

Our aftermarket DPFs and Catalysts are available for all major manufacturers and provide equal or greater performance to OEM parts, without the added cost of core charges.

With over 150 designs, and counting, Roadwarrior has the largest selection of aftermarket DPFs and DOCs on the market.