Catalyst cleaning.

1. Removal: Have your catalytic converter removed and the attachments removed.
2. Fill out form: Please fill out our order form and include a printed copy with your package for proper assignment of your catalytic converter.
3. Send filter: The easiest shipping option is with our UPS package pickup service. You can select this on the order form.
4. Cleaning: Generally we need about 1-3 business days for cleaning, but on average 80% of catalytic converters are cleaned within 24 hours.
5. Return shipment: After cleaning and receipt of payment (private customers), we send your catalytic converter back to you together with the test report and installation instructions. Express delivery is included in the price.
6. Installation: The installation and removal of a catalytic converter is complex and should be done in a workshop. Be sure to follow the installation instructions and check the vehicle for sources of error.

The exhaust gases produced during fuel combustion are processed in the catalytic converter according to various chemical principles before they are mechanically collected in the particulate filter.

In some models, so-called post-catalysts (post-cat) are used to split/clean the exhaust gases a further time after they have passed through the filtration process in the particulate filter.

• Single catalytic converters (cleaning price gasoline or diesel 210 €).
• combined systems, where the catalytic converter and diesel particulate filter are installed in one housing (DPF cleaning price 375 €)
• separate systems, where catalytic converter and diesel particulate filter are installed separately (external catalytic converter) (375 € + 50 € external catalytic converter)
• multiple systems with pre-catalyst, DPF and post-catalyst! (375€ + 2x 50€)*The cleaning prices are valid for cars, buses and vans incl. VAT + return shipping!

Does your vehicle have an additional external catalytic converter in addition to the DPF? Please be sure to clarify this with your workshop, as this should also be cleaned. The catalytic converter does not clog like a particulate filter, but the catalytic converter surface is covered with a layer of soot, which reduces the catalytic behavior or extends the reaction time of the catalytic converter. In addition, it can happen that the accumulated soot dissolves and thus clogs the cleaned particulate filter again.

Not all catalytic converters are the same – as with particulate filters, there are also differences.
The exhaust gases produced during the combustion of fuel are treated according to different chemical principles before they are mechanically collected in the DPF/OPF. The following catalyst types are used for catalytic exhaust gas treatment:

SCR KAT -in combination with an AdBlue system for diesel vehicles (Selective Catalytic Reduction).
Barrier catalytic converter or slip catalytic converter (to reduce ammonia odor caused by AdBlue)
NOx storage catalyst (direct injection to reduce NOx, at saturation is regenerated by lack of air -lamb probes regulated-)
Oxidation catalyst (abbreviation = oxicate)
Single bed oxidation catalyst (unregulated catalyst often used in old gasoline vehicles)
Three-way catalytic converter (G-cat standard equipment gasoline/petrol engine)/ regulated three-way catalytic converter
unregulated catalytic converter
Double bed catalytic converter (2 catalytic converter types installed one after the other 1. reduction catalytic converter 2. oxic converter)
4 way catalyst + additional NOx storage catalyst
EOBD catalytic converter (on new vehicles with on board diagnostics/ sensor monitoring)
Pre-oxidation catalyst
External catalyst
Lean / Denox catalyst (for diesel + gasoline with direct injection)
Potassium catalyst (cooling function)

The catalyst consists of four components:

A catalyst consists of a steel casing. This contains either a metallic (metalith) or ceramic (monolith) core. The core has many small channels running through it in the longitudinal direction. The aim is to create as large a surface area as possible so that the catalyst has an optimum effect. The carrier surface is coated with a highly porous layer (wash-coat). Precious metals (platinum, palladium and/or rhodium + in the case of NOx cat barium) are embedded / vapor-deposited in this layer.

• Housing with damping
• Ceramic carrier or metal carrier
• the intermediate layer also called wash coat or carrier layer
• the catalytic coating

Through reduction and oxidation, pollutants such as hydrocarbons, carbon monoxide and nitrogen are converted into the non-toxic substances carbon dioxide, water and nitrogen without consuming the catalyst itself.

This chemical process is also called catalysis.