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Catalytic converters

HJS is one the leading suppliers of catalytic converters for spark-ignition and diesel engines. We supply top-quality products and use only the best quality materials, such as stainless steel. Our catalytic converter monoliths, for example, are given heavy-duty, high-efficiency coatings. Our extensive range of upgrade and retrofit catalytic converters covers the bulk of vehicles on Europe's roads. By replacing their existing catalytic converter with an HJS upgrade cat, a great many car owners can save themselves a tidy sum on road tax. What's more, innovative retrofit concepts, such as the HJS KAT 2000 for spark-ignition and diesel engines and the upgrade cat for diesel vehicles, enable many older vehicles to be recategorised in a cheaper tax class (where applicable). HJS, however, also has suitable solutions for newer Euro 3 and Euro 4 vehicles as well as for older vehicles. Thanks to on-board diagnosis, the new generation of HJS replacement cat is EOBD-capable.