Moroso Dry Sump Oil Pump, 1.100" Pressure, 1.100" Scavenge, 4 Stage (MO22244)4 STAGE DRY SUMP PUMP NEW SERI Suit Chevy based Small Block & Big Block Door Car applications Part Number: MO22244 INCREASED POWER! Steady oil pressure throughout RPM range Consistent oil pressure at high heat levels Increased vacuum Consistent oil pressure at high vacuum levels Oil pressure adjust ability, allows for finer tuning of pressure levels EASIER TO PLUMB AND FIT! Internal Manifold with 16 AN return, no need for separate manifold Built in