CATALYST TYPES
Monoliths (DPF / FAP)
Particulate filters from diesel engines
What is it?
Monoliths (DPF / FAP)
The monolith, also known as DPF (Diesel Particulate Filter) or FAP, is an advanced element of the exhaust system in diesel engines. It combines the function of a catalyst with soot filtration. It is characterized by a higher precious metals content than classic catalysts.
How to identify it?
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The heaviest type described - large, massive block
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Dense cartridge, covered with small openings
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Often black or dark grey on the outside (combustion deposits)
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Characteristic cylindrical or oval construction
In which vehicles?
DPF/FAP monoliths are mandatory in most modern diesel cars, especially after the introduction of Euro 5 and Euro 6 emission standards.
- Mercedes
- BMW
- Audi
- Volkswagen
- Peugeot
- Citroën
- Renault
- Toyota
Want to know the value of your DPF monolith?
Contact us - pricing based on XRF analysis and current precious metals market rates. Monoliths typically have a higher value due to their greater precious metals content.