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Catalytic Convertors


We keep an extensive range of Bosal, Klaruis and A2A exhaust systems. Please email us with your exhaust requirements and we will get back to you with a competitive price.     or call     074 9121174 for an instant price.

At AutoFastFit,  we pride ourselves in only keeping the best brands and brands we trust. Auto Fast fit is a family run business established over 40 year ago.  We have been stocking and Fitting Catalytic converters since then and take pride in only offering the premium quality car parts at discounted prices. we keep various brand options for each product, which will allow you to choose by price or preferred brand.

Quality is guaranteed at  Only approved products are listed, which will not affect the cars manufacturers warranty.  Browse through our large range of car products.

Auto Fast fit have been using Bosal and Klarius for many years. With our commitment to quality and customer satisfaction, our relationship with Bosal and Klarius have stood the test of time.

What is an Catalytic Convertor.

This may look like a simple piece of machinery, but it's part of  a much more complex system in your car.



catalytic converter is a device that uses a catalyst to convert three harmful compounds in car exhaust into harmless compounds.

The three harmful compounds are:

  • Hydrocarbons (in the form of unburned gasoline)
  • Carbon monoxide (formed by the combustion of gasoline)
  • Nitrogen oxides (created when the heat in the engine forces nitrogen in the air to combine with oxygen)

Carbon monoxide is a poison for any air-breathing animal. Nitrogen oxides lead to smog and acid rain, and hydrocarbons produce smog.

In a catalytic converter, the catalyst (in the form of platinum and palladium) is coated onto a ceramic honeycomb or ceramic beads that are housed in a muffler-like package attached to the exhaust pipe. The catalyst helps to convert carbon monoxide into carbon dioxide. It converts the hydrocarbons into carbon dioxide and water. It also converts the nitrogen oxides back into nitrogen and oxygen.


Causes of Catalytic Converter Failure

There are two ways a converter can fail:

  • It can become clogged.
  • It can become poisoned.


Over 900 different catalytic converters are available in Bosal's aftermarket range, covering both petrol and diesel cars.

For petrol engines, Bosal has developed its own radial flow catalytic converter with an innovative metal substrate. The radial flow concept ensures an even distribution of the gas flow in the converter to deliver optimized conversion of harmful gasses.

For diesel engines, Bosal has developed its own diesel axial flow catalytic converter, using also the innovative metal substrate technology.

Both concepts enhance the reduction of emissions and ensure a high durability



Like Auto Fast Fit, Klarius like to do things bigger and better. Klarius's CATs come with an Exclusive Lifetime Warranty. Discover more now.

Just look at these additional benefits:

  • Biggest range in Europe.
  • Biggest European manufacturer.
  • Best availability.
  • Focused on aftermarket service.
  • Type approved by VCA, TUV, Idiada and Inta.
  • Developed in the most advanced technical centre in Europe.