DOCs

Browse our selection of DOCs.

The Diesel Oxidation Catalyst (DOC) is a vital component of your truck's aftertreatment system, responsible for converting carbon monoxide and hydrocarbons into less harmful emissions while facilitating the passive regeneration of the DPF. Our collection features a wide array of premium aftermarket DOCs engineered to solve common exhaust issues such as "face-plugging," internal substrate melting, and persistent efficiency-related fault codes like P0420.

We stock exact-fit units for all major heavy-duty and light-duty platforms, including Cummins ISX/ISB, Detroit Diesel DD13/DD15, Navistar MaxxForce, and Ford F-Series Super Duty. These units are designed to meet or exceed OEM performance standards, ensuring your exhaust system maintains the proper heat and chemical balance required for trouble-free operation.

At DPF Super Store, we focus on providing heavy-duty solutions that save you money without compromising on reliability. By offering high-quality aftermarket DOCs with no core charges, we help you avoid the high costs and logistical headaches of dealer exchanges. Our strategic warehouse locations in Toronto and Vancouver allow us to maintain a massive in-stock inventory ready for fast, nationwide shipping, significantly reducing your vehicle's downtime.

Whether you are an owner-operator or a fleet manager, you can trust our expert team to help you source the correct catalyst for your application. Shop our selection today and experience the fastest, most reliable aftertreatment part fulfillment in Canada.