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A catalytic converter is an emissions control device that converts toxic gases and pollutants in exhaust gas to less toxic pollutants by catalyzing a redox reaction (an oxidation and a reduction reaction). Catalytic converters are used with internal combustion engines fueled by either petrol (gasoline) or diesel—including lean-burn engines as well as kerosene heaters and stoves.

Cateran Inc is a supplier of premium quality direct fit catalytic converters to the North American market. Cateran direct fit catalytic converters are manufactured using the latest manufacturing techniques to the highest standards in the aftermarket industry. Cateran invests significant time and money in product design and development and in production control to ensure its direct fit catalytic converter systems fit perfectly and meet customer requirements and expectations. Click on the surrounding images to see why purchasing a Cateran direct fit catalytic converter is the right choice.


Cateran direct fit catalytic converters meet or exceed US Federal EPA emission regulations and are rigorously tested to ensure the (engine check lamp image) stays off.

Cateran direct fit catalytic converters use mandrel bent OEM grade 409 stainless steel for superior durability and smooth exhaust gas flow. Many other aftermarket catalytic converter suppliers use press bent or empty bent aluminized mild steel tube that is restrictive and less durable.

Cateran direct fit catalytic converters are designed to be as close as possible in design to the original parts they replace.   This ensures a true direct fit with no cutting, welding or bending required.  Original heat shields can be re-used on many of the Cateran direct fit manifold converters.

Cateran direct fit manifold converters are supplied with complete fitting kits that include premium quality OEM-style gaskets, nuts, bolts, washers, springs and brackets where required.

Every Cateran direct fit catalytic converter is leak tested before being shipped.

Cateran direct fit catalytic converters use OEM style flanges and brackets for quick, easy and trouble free installation

Every newly developed Cateran catalytic converter is test fitted by a reputable dealer workshop to ensure the parts fit like the original parts without the need to bend, hammer, force or heat.

Cateran direct fit catalytic converters have robust mounting brackets to resist cracking with end formed hangers to prevent the system from sliding out of the rubber mounts.