Oil Pump - Honda/Acura B-Series

The MOROSO Oil Pump for Honda and Acura B-Series engines is a wet sump, high-volume internal pump engineered to deliver consistent oil flow at standard pressure across the full RPM range. This pump replaces OEM oil circulation systems in B-Series platforms and is essential for engine builds where reliable lubrication under sustained load is non-negotiable.

High-volume oil pumps increase flow rate compared to stock units, reducing pressure drop through the system and maintaining adequate film strength at elevated RPM and boost levels. The internal design means the pump mounts within the crankcase rather than externally, simplifying packaging in tight engine bay configurations common to Honda B-Series swaps. Standard pressure regulation keeps the pump compatible with OEM pressure sensors and relief valve settings, eliminating custom tuning requirements on oil system components.

This pump is the choice for B-Series engine builders preparing daily-driven or track-oriented builds where consistent oil delivery matters. Whether upgrading a worn stock pump, increasing flow capacity for higher RPM operation, or rebuilding an engine from bare block, the MOROSO B-Series oil pump provides straightforward, proven circulation. Weighing 3.4 lbs and designed for direct mounting compatibility, it integrates into existing B-Series wet sump systems without requiring case modifications or custom fabrication.