These
are
the
same
machined
aluminum
injector
seats
used
in
Radium
fuel
rail
kits.
They
are
required
when
converting
an
OEM
side
feed
fuel
rail
to
top
feed.
They
simply
"pop"
into
the
intake
manifold
(1
required
per
injector).
They
seal
to
the
machined
injector
counterbore
using
the
included
Viton
O-ring.
The
2
sizes
are
based
on
the
intake
manifold's
inside
diameter
of
each
injector
counterbore.
Below
are
just
a
few
examples
of
some
popular
Nissan
engines.
SOLD
INDIVIDUALLY!!!
