Common DPF Clamp Failures and Solutions

Apr 23, 2025

In a diesel engine, it is the Diesel Particulate Filter (DPF) that finds itself at the heart of the exhaust system. This device captures the exhaust gases before they are released into the environment. A well functioning DPF-Klammer is almost as important as the DPF itself if we want to reduce our emissions and save the planet. This article is all about discussing common DPF clamp related problems and the appropriate solutions for those problems.

Getting To Know DPF Clamps

DPF-Klammern are mechanical devices that are used for fixing the diesel particulate filter to the exhaust system. They are the ones that prevent the filter canting, broken seal, or resulting in exhaust gases being released into the environment without being properly processed. DPF clamps that are properly taken care of are responsible for the proper working of the exhaust system. If a DPF clamp does not work because of incorrect driving, the exhaust gases are released into the environment without being properly filtered, and this can lead to a substantial amount of harmful emissions released in the short term and damage to the engine in the long run.

Common DPF Clamp Failures

1. Corrosion and Oxidation

The Problem: Corrosion is undoubtedly one of the most common issues with DPF clamps, especially in hazardous operating conditions. Humidity, road salt, and high temperatures can all lead to rust and the subsequent decay of the material.

Solution: When choosing a DPF clamp, choose one made from ultra-durable stainless steel because they are of the highest quality. Stainless steel is extremely resistant to corrosion and oxidation even in the harshest conditions, so it will last longer.

2. Loosening after long-term use

Problem: One of the reasons DPF clamps can become loose is due to vibration and the expansion of the exhaust system caused by high temperatures. If the clamps are loose, the DPF will not be properly secured, resulting in leaks and inefficiencies.

Solution: The clamps should be checked regularly to ensure that the DPF is secure. Rather than waiting until the clamps loosen further, tightening the clamps during preventive maintenance is the best way to ensure that the clamps are secure.

3. Improperly installed clamps

Problem: Using the wrong size DPF clamp will result in a failed seal or a poor seal. The exhaust gases that the DPF is supposed to capture will leak out, reducing the efficiency of the DPF.

Solution: Always make sure you have selected the right size DPF clamp for your vehicle type. Yongyong offers clamps in various sizes to suit different models, such as Mercedes, Volvo, DAF, Iveco and MAN.

4. Heat Damage

Problem: The use of high exhaust temperatures in diesel exhaust systems causes current to flow through certain clamps, which can cause metal structures to weaken (or even break). Heat can act as a pathway for substances to enter the system, subsequently creating foul air, which in turn is the source of many problems, including acid rain and global warming.

Solution: To avoid such problems, you can choose DPF clamps that are not only well designed, but also resistant to high temperatures and pressures.

5. Material Aging

Problem: The material used in DPF clamps can become brittle over time due to heat, eventually causing them to break or bend. Material aging is also common due to the exhaust system’s constant exposure to chemicals and heat from the exhaust.

Solution: Regularly inspect the DPF clamps for visible signs of damage. If any clamps are damaged, replace them immediately to ensure that the DPF works efficiently.

Conclusion

DPF clamps are critical to the performance and environmental friendliness of diesel exhaust emission systems. Understanding system failures and their solutions can help vehicle owners keep their DPF systems in good condition. Using quality DPF clamps from a reliable retailer like Yongyong will keep your diesel particulate filter in place, preventing leaks and improving the overall performance of the product.

Want to learn more about our products and how we can meet your DPF needs? Kontakt today!