Fleetguard Air Filter AF27817 Air Dryers for Truck-and Bus applications
How an Air Dryer Works
The air brake system on your vehicle includes an air compressor that is driven by the engine. The air compressor ensures the air brake system is charged and ready to stop the truck or trailer when the operator applies the brakes. As the compressor draws ambient air into the air brakes, moisture is introduced into the system, particularly during humid or rainy conditions. As the air is compressed, it is heated and cooled and this results in additional condensation which increases the amount of moisture in the system.
To address moisture in the air brake system, the air dryer controls two operations. First, the air dryer intermittently purges water that accumulates as the air cools and releases it into the environment.
Second, as air flows through the air dryer, a drying agent called a‘desiccant cartridge’ removes any remaining moisture in the system to ensure the air brake system can operate optimally
OEM NO. | ENGINE | OEM NO. |
3977534 | Air Filter | 4913882-29 |
C3281238 | Air Filter | 4913975-29 |
C4938598 | Air Filter | A478-020-AM-29 |
C4939580 | Air Filter | A751-20 |
C5257102 | Air Filter | AF1850-29 |
C3970588 | Air Filter | AF1855-29 |
Z3900419 | Air Filter | AF1969M-29 |
C3281239 | Air Filter | AF25270-29 |
C3281240 | Air Filter | AF25271-29 |
3977628 | Air Filter | AF25276-29 |
C3281232 | Air Filter | AF25277-29 |
C3976063 | Air Filter | AF25278-20 |
C4935855 | Air Filter | AF25452/AF25453-29 |
C4939579 | Air Filter | AF25647-29 |
Z3900045 | Air Filter | AF25708M-29 |
Z3900043 | Air Filter | AF25812-29 |
Z3900420 | Air Filter | AF25813-29 |
3050498 | Air Filter | AF4504M/AF1791-20 |
C-71338-2/AH1103 | Air Filter | AF4674-29 |
3021645 3021644 3022209 | Air Filter | AF872-29 |
1403112 AR61967 AR79679 | Air Filter | AF880-AM-20 |
1AH-1100 71338004/AH1183 | Air Filter | AF899M-20 |
3028847 420051C1 | Air Filter | AF934-29 |
3013210 3013211 | Air Filter | AF935M-29 |
11033998 11033999 | Air Filter | AF947-29 |
3630778 | Air Filter | AH1100-29 |
3315742 | Cummins air filter | AH1103-29 |
3013214 | Cummins air filter | AH1106-29 |
870904A 870904N | Cummins air filter | AH19002-29 |
3315741 | Cummins air filter | AH19003-29 |
1109ZB1-SET2-AM-20 | Cummins air filter | AH19225-20 |
3000958-29 | Cummins air filter | AP8413-20 |
3010306-20 | Cummins air filter | AP8414-20 |
3013238-29 | Air Filter Cuff | 197221-20 |
3017002-29 | Bracket,Air Filter | 3017004-20 |
3017003-29 | Bracket,Air Filter | 3034735-20 |
3018042-AM-29 | Bracket,Air Filter | 3044632-20 |
3050498-29 | Bracket,Air Filter | 3626780-20 |
3103262-29 | Bracket,Air Filter | 3630538-20 |
3630751-20 | Bracket,Air Filter | 3630698-20 |
3827808-29 | Bracket,Air Filter | 3630700-20 |
4061371-29 | Tube,Air Filter | 4061373-20 |
4095069-29 | Bracket,Air Filter | 4913522-20 |
4913719-29 | Air Filter Clamp | 4913733-20 |
4913720-29 | Air Filter | 4917750 |