These filters are designed to fit inline with your turbo oil supply line. The filters are color coded for their orifice diameter. The Red filter is .125" for full flow with FP journal bearing turbos and Xona Rotor turbochargers (post 2020), the
Purple filter is .020" for use with our Xona Rotor turbochargers (pre 2020) and the black
filter has a .030" restrictor and is used in Garrett based ball bearing applications.
The filter is made with female 4AN at the inlet side and male 4AN
at the outlet side. This allows the filter to install into virtually
any 4AN line without additional fittings.
The FP -4 AN Filter features a 10 micron replaceable filter element
that captures oil contaminants in its basket. The filter basket is
easily removable for quick inspection and cleaning. The filter can be
run in either direction, but the preffered flow direction is in the
female side and out the male side. This allows all the contaminants to
be collected inside the filter basket rather than collecting the
contaminants all over the outside of the filter basket.
Remember that the filter can become clogged. While you may have
prevented a turbo failure by filtering out contaminants, you can cause a
failure by limiting oil supply through a plugged oil line filter. Check
the filter regularly, you should inspect the filter whenever you perform an engine
oil change. Turbo failures resulting from plugged filters are the
responsibility of the user.
The user is also responsible for verifying that sufficient oil
pressure is present at the turbo oil inlet. Turbo failures resulting
from over restriction of the oil feed line is the responsibility of the