MAN 81521026117 Air Dryer

Description

The MAN 81521026117 Air Dryer is a critical component in heavy-duty vehicle air brake systems, responsible for removing moisture and contaminants from the compressed air supply. It is used in the air system of trucks, buses, and other commercial vehicles to ensure reliable braking performance and prevent corrosion. This air dryer enhances system longevity through efficient moisture removal, contributing to a safer and more dependable braking system. It measures 150 x 160 x 280 mm.

Key Features & Benefits

This part basically takes moisture out of your vehicle’s refrigerant. It's a filter, but for water. It absorbs any humidity that gets into the AC system, turning it into a liquid and keeping it from causing problems. It also has a desiccant inside – that’s the stuff that actually soaks up the water – and it can sometimes contain a filter to catch debris. Think of your AC system like a closed loop. The refrigerant cycles around and around. But it’s not perfectly sealed. Over time, a little moisture creeps in. The air dryer sits in the liquid line, meaning it’s in the path of the refrigerant after it's been cooled down. That’s important because moisture freezes easily when it’s cold, and you don't want ice crystals forming inside your AC components.

Symptoms, Risks & Replacements

Moisture in the system can cause a whole heap of trouble. It can lead to corrosion, which damages parts over time. It can also mix with the refrigerant and form acids, which eat away at seals and compressors. The compressor is obviously a really expensive part to replace, so preventing that is key. Basically, the air dryer acts like a shield protecting the rest of the AC system. You’ll notice if this thing fails usually by a loss of cooling performance, or potentially some compressor noise. You can find replacements pretty easily, Fixparts Online has a good selection of them. It's a relatively inexpensive part to replace considering the cost of AC repairs if you let moisture build up.

Warranty Information

MAN Air Dryer (MPN 81521026117) comes with a 1-year warranty.