Boundary Pumps Pump Assembly Ford Mazda BP I4 ALL TYPES 91.5-05 Escort GT Mazda Miata Billet Gear High Flow

Description

Stage II pumps increase the overall flow by machining a deeper pocket into the oil pump and fitting larger gears in this pocket. This increases the strength of the pump, increases mid-range oil pressure, and increases the strength of the oil pump gears.

The Stage II Pumps have these additional modifications:

• Larger gears are fitted into the oil pump which increases mid range protection and insures compatibility with VVT.
• The pump is shimmed increasing maximum warm pressure from 60 PSI to 70 PSI.