Boundary Billet Back Plate Mazda BP 91.5-05 Escort GT Mazda Miata

Part Number: BP-BBP Our Billet back plates use advanced CFD simulation and exacting 3D precision milling to create a blend of engineering and manufacturing that produces less leak by, less aeration, less cavitation, and more high RPM flow. • Plate is cut from billet steel, 5 times as rigid as aluminum, reducing blow by and air ingestion • Plates feature our MartenWear surfaces for long life • Increased volume and reduced foam increases engine bearing life • Utilizes surface grinding to create the ultimate pump seal Part Number: BP-BBP FITS: 1. MIATA 1991.5-2005 2. All Large Nose Crank Pumps