AEM 25-391 High Volume Fuel Rail AN Adapter Kit User Manual
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4) Plumbing the AEM Fuel Rail
The AEM AN Adapter Kit is intended for use in custom fuel system applications. The AEM Universal
Fuel Pressure Regulator (P/N 25-302) may be mounted in a remote location and plumbed into the
fuel system using this kit. Shown below are suggested methods for attaching AN style lines to the
AEM Fuel Rail. Final fuel system configuration and plumbing is up to the end user.
f) Gently insert the end adaptor into the fuel
rail. Make sure the o-rings stay in place and
are not torn. Insert two 1-2061 dowel pins into
the dowel pin holes.
g) Insert and tighten two 1-2062 screws into
the dowel pin holes. Repeat steps b-g for the
other side of the fuel rail.
e) Lightly lubricate the tip of the end adapter
and the o-rings in the end of the fuel rail. Clean
engine oil works well.
AEM
–AN
Adapter
Supplied
–6
Crush Washer or
Earl’s Stat-O-Seal
(P/N 178009ERL)
Earl’s –6 to 9/16-18
Adapter (P/N 985006ERL)
Earl’s –6 90 Degree
Auto-Fit Hose End
(P/N 309106ERL)
This configuration works well on the inlet side of the fuel rail only. A line needs to be made from the
fuel filter to the fuel rail. Because this configuration extends off of the fuel rail so far, it is not
suitable for the return side of the fuel rail. The hose end will come into contact with the timing belt
cover if this configuration is used on the return side of the fuel rail.
Lubricate
Dowell Pins