The Boundary billet back plate for 1991.5–2005 Ford/Mazda BP inline-4 engines is specified as a replacement pump back plate for BP-family applications. Intended for use with BP-series oil pumps during rebuilds or maintenance, this billet back plate fits 1991.5–2005 BP engines where a replacement plate is required by the pump assembly.
Boundary 91.5-05 Ford/Mazda BP (All Types) I4 Billet Back Plate