An automatic transmission filter is a filter element installed in an automatic transmission. The purpose of the filter is to prevent deposits and wear products, contamination elements and other debris from entering the transmission components. Clogged with dirt, the filter is not able to pass a sufficient amount of liquid, due to which the oil pressure decreases. It protects the system from the ingress of harmful particles that enter along with the transmission fluid.

1. 3 Touring (E91)
2. 3 (E90)
3. 3 Saloon (E90)
4. 7 (F01, F02, F03, F04)
5. 7 Saloon (F01, F02, F03, F04)
6. 1 Coupe (E82)
7. X1 (E84)
8. X1 SAV (E84)
9. X1 SUV (E84)
10. X3 (E83)
11. X3 SAV (E83)
12. 3 Coupe (E92)
13. 3 Convertible (E93)
14. 5 (E60)
15. 5 Saloon (E60)
16. 5 Touring (E61)
17. Z4 Roadster (E85)
18. 1 (E81)
19. 7 (E65, E66, E67)
20. 7 Saloon (E65, E66, E67)
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The principle of the hydraulic filter usage

The gearbox can be manual or automatic, with the former being the most common. In an MAXGEAR brand Hydraulic Filter, automatic transmission, many elements function, each of which directly affects the serviceability of the control system. However, if the system becomes clogged, anything can happen, up to the loss of control over the car. To prevent this from happening, regularly check the automatic transmission filter. You can do this yourself or go to a service station, where they will inspect the transmission filter and assess its condition.