474-00039 474-00040 AF25667 P532966 diesel truck engine air filter manufacturer

474-00039 474-00040 AF25667 P532966 diesel truck engine air filter manufacturer

diesel engine air filter

air filter manufacturer

truck air filter

Size information:

Outer Diameter : 237mm

Height : 484mm

Inner diameter : 130mm

Cross OEM number:

AGCO : 700717484             CASE IH : 249987A1           DITCH WITCH : 194351

DOOSAN : 474-00040           DOOSAN : 97400040          JOHN DEERE : AT178516

KOBELCO : 11P00008S002       KOMATSU : 1308462H1        KOMATSU : 600-185-4100

KOMATSU : 600-185-4110       DONALDSON : P532966        FLEETGUARD : AF25667

MAHLE : LX 2534              MANN-FILTER : C 24 015        MANN-FILTER : C 24 015/2

Identifying A Dirty Filter

How do you know when your engine air filter needs to be replaced? Visible dirt on the filter surface is not a good indicator. Air filters actually do a better job of trapping contaminants once they have been in operation long enough to gain a light coating of dust and dirt. To test an engine air filter, remove it from its housing and hold it up to a bright light such as 100-watt bulb. If light passes easily through more than half of the filter, it can be returned to service.

The light test works well with pleated paper filters. However, some cars have extended life engine air filters with dense fabric filtering media that are highly effective, but don’t allow light to pass. Unless a filter of this type is visibly caked with dirt, replace it at the mileage intervals specified by the vehicle manufacturer.

Some vehicles, primarily pickup trucks, have an engine air filter service indicator on the filter housing. This indicator measures the air pressure drop across the filter when the engine is running; the pressure drop increases as the filter becomes more restricted. Check the indicator at each oil change and replace the filter when the indicator says to do so.