CONCENTRIC 1800291 - PUMP,HYDRAULIC GEAR - HYDRAULIC GEAR PUMP, DISPLACEMENT (CU. IN./REV.) 0.85, NOMINAL GPM @ 1200 RPM 4.4, GPM @ 1800 RPM AND 1000 PSI 6.3, MAX. CONTINUOUS PSI 4,000, MAX. RPM 3,300 RPM, MIN. RPM 500 RPM, SAE A 2 BOLT MOUNTING, PORTS (INLET) 1-1/16-12, PORTS (OUTLET) 7/8-14, R ROTATION, SHAFT EXTENSION (IN.) 3/4 X 1-1/4 KEYED, COVER MATERIAL CAST IRON, PRESSURE-BALANCED, WITH 90 PERCENT OVERALL EFFICIENCY AND LOW NOISE, ALUMINUM HOUSING, WIDTH (IN.) 4.09 IN - EQUAL TO G3343873