Boundary 91.5-05 Ford/Mazda BP (All Types) I4 Billet Back Plate - 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 higher RPM flow.

• The plate is cut from billet steel, five times as rigid as aluminum, reducing blow-by and air ingestion
• Increased volume and reduced foam increase engine bearing life
• Utilizes surface grinding to create the ultimate pump seal

Part NumberBP-BBP FITS:

1. MIATA 1991.5-2000 (Not compatible with VVT housings)

2. All Large Nose Crank Pumps