
Topcats
About us
Specialist in cleaning and overhauling catalytic converters and diesel particulate filters.
Extend the lifespan of your diesel particulate filters and catalytic converters and save up to 80% on maintenance costs. Topcats is a certified reconditioning specialist (GroenGedaan). We offer complete cleaning, repairs, and overhauls for every make and model of Euro 5 & 6 ATS/EAS exhaust aftertreatment system.
We have experience with all major truck brands: DAF, IVECO, MAN, MERCEDES-BENZ, RENAULT, SCANIA, and VOLVO.
Our customers operate in automotive, transport, marine, logistics, construction, infrastructure, passenger transport, and agriculture. Our service includes:
• DPF cleaning and reconditioning
• SCR cleaning and reconditioning
• DOC cleaning and reconditioning
• EGR valve/cooler cleaning
• AdBlue blockage removal
• Installation of (custom) retrofit particulate filters
We are located in Lelystad and have a modern workshop with extensive machinery for the professional cleaning and reconditioning of catalytic converters and particulate filters.
For passenger cars and LCVs, we offer more than 3,000 catalytic converters and more than 1,500 particulate filters. Fast delivery and at the right price.
With years of experience and fast, customer-friendly service, you will always receive prompt and efficient assistance. Topcats is available Monday to Friday between 8:30 AM and 5:00 PM for your questions.
Tel: +31 (0) 88 9494 500
Email: info@topcats.nl
Products & services

DAF XF/XG > 2017 DPF cleaning and overhaul
Topcats Heavy Duty successfully reconditions DAF XF/XG Euro 6 diesel particulate filters (DPF) manufactured after 2017. Many of these filters suffer from a shifting filter element, which can lead to breakage and blockages. Our technical experts have come up with a clever solution: a practical modification to the housing prevents shifting. This extends the filter's lifespan to another 300,000-500,000 km! 💰 Save on costs! Instead of an expensive new diesel particulate filter, we offer reconditioning for just €990! By comparison, a replacement pool often costs €1400 plus a €750 deposit or additional payment. 🚛 Back on the road immediately! With our deposit-free replacement system, your truck doesn't have to be idle—replace it immediately and keep driving! 📞 Want to know more or schedule an appointment? Contact our service department!

Euro 4/5/6 particulate filter cleaning
Topcats uses thermal and mechanical cleaning. Diesel particulate filter cleaning is performed in a dedicated area within the workshop. In this cleaning chamber, the diesel particulate filter is cleaned to factory-fresh condition. When necessary, diesel particulate filters are completely disassembled to access the particulate filter substrate. This allows all types of contaminants in the filter (including soot, ash, oil, and additives) to be checked and cleaned. Upon request, the client receives a report, and a swap pool can be established.

Euro 4/5/6 particulate filter overhaul
During a particulate filter reconditioning, we replace malfunctioning or broken internal parts. These are then replaced with a high-quality new substrate or element. Reconditioning may involve replacing a substrate that has shifted. We then insert a new (insulating) mat. If necessary, we perform modifications to prevent future shifting. We may also replace a sensor connection. A particulate filter reconditioning is sustainable. The housing is reused, and only broken parts are replaced. The cost savings compared to a new one can be up to 80%.

Euro 4/5/6 Catalytic converter cleaning
We can clean catalytic converters contaminated with oil or AdBlue. If a catalytic converter is installed before or in combination with a diesel particulate filter, for example, in EEV or Euro 6 vehicles, we recommend sending it in for cleaning. In Euro 6 vehicles, the SCR catalytic converter is often built in, and the entire exhaust system will need to be disassembled for a proper diagnosis. We check the condition and flow, determine the cause, and then offer a suitable solution. Catalytic converter cleaning or any potential overhaul is always carried out in consultation with you.

Euro 4/5/6 catalyst overhaul (SCR/DOC)

EGR cooler/valve cleaning
Valves and coolers can become clogged due to contamination and cause serious problems, such as engine malfunctions. Therefore, it's important to maintain your valves and coolers. Topcats' maintenance is carried out quickly and professionally using high-pressure and ultrasonic cleaning. The result of a valve and cooler cleaning is factory-fresh, and all at a fraction of the price of a new EGR valve or EGR cooler. Our experts are happy to assist you and provide support with questions about exhaust systems such as catalytic converters, diesel particulate filters, valves, and coolers. We clean every make and type of Exhaust Gas Recirculation valve and EGR cooler from buses and trucks. View our range, including MAN EGR valves and coolers, for fast service. Want to learn more about the cost-saving options for cleaning EGR valves and EGR coolers? Feel free to contact us for information and advice at 088 – 9494500 or request a quote directly.

Custom Projects installation soot filters
Not all diesel machines are easily replaced with electric machines. Legal requirements do require employers to minimize harmful emissions. Topcats designs add-on particulate filters for diesel machines used in public spaces. This allows you to protect employees and bystanders from harmful soot in exhaust gases. We have supplied add-on particulate filters for various projects. Based on the machine's specifications, we can calculate which particulate filter you need. We build the conversion with filters in our workshop and can also handle installation if necessary. You can have the filters cleaned by us when they are full. A swap pool can be useful for this.
