The Peterson Fluid Systems primer filter mount with -12AN fittings (left-to-right flow) is intended for System 1 post applications. It pairs a small R4 rotor primer pump with a filter mount so a standard drill can quickly generate about 20 psi to circulate oil before engine start. The billet aluminum construction and AN port fittings allow tube, firewall, or tank mounting; mounting bracket sold separately.
Peterson Fluid Systems Primer Filter Mount -12AN System 1 - Left to Right