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Canadian Aftermarket Supplier

Find Your DPF or DOC Filter — Fast

Enter your OEM part number. We stock Caterpillar, Cummins, Detroit Diesel, Volvo, and more — from our Canadian and U.S. warehouse.

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Find Your DPF or DOC Filter — Fast
Free Shipping Across Canada & the U.S.
Our Own Inventory — Ships Within 24 hrs
3 year and unlimited mileage Warranty on Every Filter
(705) 690-2750
Inventory

Shop by Engine Brand

We stock filters for all major heavy-duty diesel brands.

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Filter Types

DPF vs. DOC — What's the Difference?

DPF

Diesel Particulate Filters (DPF)

Capture soot particles from exhaust gases. Required on all diesel engines meeting EPA 2007+ emission standards. Must be periodically regenerated or replaced.

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DOC

Diesel Oxidation Catalysts (DOC)

Convert CO, hydrocarbons, and liquid particles into CO₂ and water. Installed upstream of the DPF and essential for passive regeneration.

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SENSOR

NOx & Exhaust Sensors

Monitor nitrogen oxide levels before and after aftertreatment. Critical for ECM regeneration cycles and emissions compliance.

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Blog

From the Blog

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DPF Cleaning vs. Replacement: Making the Right Call

Not every clogged DPF needs replacement. Here is how experienced fleet managers decide when to clean and when to replace.

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Aftermarket vs OEM DPF: What Canadian Fleets Need to Know

Is aftermarket DPF as reliable as OEM? We break down quality standards, warranty coverage, and the real cost difference for Canadian operators.

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What Is a DPF Filter and Why Does It Fail?

Diesel Particulate Filters trap soot from your exhaust. Learn how they work, why they clog, and when replacement beats cleaning.

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Filter Needs Cleaning, Not Replacing?

Our sister company Len's Clean Air specializes in professional DPF & DOC cleaning. Save thousands vs. replacement.

Learn About Filter Cleaning