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Roadwarrior: the Metalcor® Advantage


Over the last 30 years, DCL has provided catalyst technologies to a wide range of industries and applications. Roadwarrior is proud to be part of the DCL Technology Group, and as such, we benefit from advanced catalyst technology, including DCL’s patented Metalcor®. This catalyst features a metal substrate that tolerates higher temperatures and more extreme conditions than traditional ceramic catalysts. The advanced honeycomb structure provides a high surface area with minimal backpressure to get the best performance from your diesel engine.


Advanced Solutions at an Affordable Price


To cut down manufacturing costs, lots of OEMs make their aftertreatment parts from ceramic instead of metal. Ceramic is cheaper, but the brittle material is less capable of withstanding the heat and pressure of the engine; the result is more fuel consumption and a shorter working life. Our metal catalysts are stronger, withstand higher temperatures, and reach operating temperatures faster. This has obvious benefits:

  • The superior coating paired with the complementary design of our Diesel Particulate Filters restores fuel efficiency. The result is less soot buildup and noticeable fuel savings.
  • The design and coating on our Metalcor® Diesel Oxidation Catalysts (DOCs) reduces engine backpressure and makes regens more efficient. This means fewer and shorter regens, less downtime pulled over on the roadside, fewer schedule disruptions, and lower fuel costs.
  • We’re the only aftermarket manufacturer to supply Metalcor® Selective Catalytic Reduction (SCR) systems for trucks and buses. As well as reducing toxic NOx emissions in the exhaust, our efficient SCR design increases your savings. This is because our SCR consumes less DEF than many OEM models.


These benefits would usually mean a much more expensive product. However, our DCL supply chain allows Roadwarrior to offer a superior catalyst at a comparable cost to its ceramic counterpart.


More Designs, Engineered for Your Diesel

Roadwarrior's replacement aftertreatment One-Box

A flexible manufacturing system and talented R&D team mean we’ve been able to expand our offering considerably in recent years. As well as SCR, we’ve also added One-Box exhaust aftertreatment systems to our catalogue, which has become the largest aftermarket catalogue of its kind in the diesel industry.

We design parts for a range of heavy-duty vehicles and equipment, from trucks and busses to off-highway construction equipment. Our models benefit from advanced coating technology. This results in higher, stabler catalytic activity, and so greater catalytic and fuel efficiency. In short: more diesel engines, more designs, but the same high-efficiency Metalcor® technology.


High-Speed Shipping & Delivery

You can order any of our parts anywhere you buy heavy-duty parts, just ask for Roadwarrior! We can ship replacement DOCs, DPF filters, and SCR systems to your site in 1–2 days, with no unnecessary delays. Our 40 most popular parts are always stocked in warehouses across North America. As a result, these parts are all available for same-day pickup or next-day delivery. We stock parts from all the major manufacturers, including Caterpillar, Cummins, Detroit Diesel, Deutz, Isuzu, John Deere, Komatsu, Navistar, Volvo and Mack. If you don’t see your part in our catalogue, don’t hesitate to contact us to see if we can help.


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  1. […] to create carbon dioxide and water. At Roadwarrior, our emissions control technology features award-winning Metalcor® technology, improving fuel efficiency and conversion rates. Our Metalcor® DOCs are more durable […]

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Better Coating, Better Performance.

Roadwarrior is the only manufacturer to use Metalcor® catalyst technology across its entire range of Diesel Oxidation Catalysts (DOCs) and Selective Catalytic Reduction catalysts (SCRs). Metalcor® catalysts feature high activity catalyst coatings fused to thinner, stronger, catalyst substrates to guarantee maximum performance under the harshest conditions.

Metalcor® catalyst coatings are designed and produced in our own labs. We then inspect each unit to ensure you get more fuel efficiency, lower consumption of DEF, and long term performance from your heavy duty engine!


Roadwarrior Has You Covered!

All Roadwarrior emissions parts carry a full value 12 month warranty.

LightningVolt lithium batteries carry a full value 30 month warranty.

To make the process hassle-free, our parts have a metal nameplate with the serial number, so even after 500,000 miles of service, it’s still easy to identify. This avoids the common problem of serial numbers printed on stickers that burn off after the first start-up, making them impossible to return. Our failsafe system allows us to work in your interests, honouring claims for on-road and off-road replacements, and giving you peace of mind.

And since Roadwarrior parts are designed to meet or exceed OEM specifications, you can rest easy knowing our direct fit parts will take the problems out of your aftertreatment without interfering with your OEM warranty.

Next Day Is Nice, Same Day is Better!​

A faulty emissions control system can cost you thousands in wasted man-hours as your heavy equipment sits in the shop awaiting a new part. Whether it’s a truck behind on orders, a bus that can’t take passengers, or heavy machinery delaying construction deadlines, Roadwarrior can get you moving again! 

Roadwarrior has twelve warehouses across the U.S.A. and Canada, which can deliver the most popular aftertreatment parts in 1-2 days. With over 1,000 DPFs, DOCs and SCRs on offer, Roadwarrior offers the largest aftertreatment catalogue.

*LightningVolt lithium batteries ship directly from Roadwarrior in Ontario, to ALL 50 states, including Alaska and Hawaii within 2-4 days.