Exploring 642820 and 642826 turbine pads: What are the differences?

Here are several introductions about the Mercedes Benz diesel 642820 cylinder:

Curved rear structure: The middle cylinder of this Mercedes Benz diesel 642820 has an aluminum bracket at the curved rear, which provides special support for the rear of the engine and plays a unique role in stability and heat dissipation.

Oil seal characteristics: The oil seal inside the middle cylinder can be replaced separately, which provides great convenience for subsequent maintenance work and effectively reduces maintenance costs and difficulties. When there is a problem with the oil seal, there is no need to replace the entire component, saving time and energy.

Details of turbine pad: One obvious difference between it and other models is the turbine pad. The 820 model can use the 826 turbine pad because the 826 turbine pad has an additional hole, which can better adapt to the structural requirements of the 820 cylinder in this area. And this turbine pad is not made of ordinary steel plate material, but a double-sided adhesive coated metal pad. Due to its lack of strong dryness, it can be flattened during installation to ensure sealing effect while also adapting to some subtle deformations during engine operation, ensuring stable operation of the turbine system.