DieselFilters.US is a Direct to Consumer website that sells a broad range of Emissions Products such as Diesel Particulate Filters (DPFs), Diesel Oxidation Catalysts (DOCs) and Selective Catalytic Reduction (SCR) for post-2007, medium to heavy-duty trucks and buses.

All of our aftermarket DPFs and Catalysts are manufactured in the USA and are compatible with all makes and models of trucks on the road today. Our products have equal or greater performance to OEM parts without core charges.

We have over 300 emission control products and we are constantly updating our inventory with new products. We currently have 2 main warehouses located in the USA and we are still growing.

All of our parts are direct fit replacements to the OEM parts and that provides you a peace of mind that installation will be quick and easy. We also provide an industry leading 2-year unlimited mile warranty on our DPF’s. We are a Distributor for RedLine Diesel Emissions Products.


Our products are built to last and have the longest industry warranties. These products go through strict testing to meet or exceed OEM standards and provide exceptional performance and longevity in your diesel equipment. This commitment to quality goes into every product we supply.


Redline Emissions Products come ready to install and include the needed replacement accessories (where applicable) to ensure an OEM quality fit, every time.


All Redline Emissions Products come packaged individually, and our DPFs, DOCs, CACs, clamps & gaskets come in sturdy boxes. All products are labeled with REP part numbers and OEM crosses for easy reference.