East Gear make all the Parker/Commercial Intertech series gear pump casting parts including Port End Cover, Shaft End Cover, Housing and Bearing Carriage which can be full interchangeable with OEM parts.

P37 P50 P51 Gear Pump Castings:

37-H-05 --- 305-8005-100, 37, 1/2" GEAR HOUSING, LA-1688-05

37-H-07 --- 305-8007-100, 37, 3/4" GEAR HOUSING, LA-1688-07

37-H-10 --- 305-8010-100, 37, 1" GEAR HOUSING, LA-1688-10

37-H-12 --- 305-8012-100, 37, 1-1/4" GEAR HOUSING, LA-1688-12

37-H-15 --- 305-8015-100, 37, 1-1/2" GEAR HOUSING, LA-1688-15

37-H-17 --- 305-8017-100, 37, 1-3/4" GEAR HOUSING, LA-1688-17

37-H-20 --- 305-8020-100, 37, 2" GEAR HOUSING, LA-1688-20

37-H-22 --- 305-8022-100, 37, 2-1/4" GEAR HOUSING, LA-1688-22

37-H-25 --- 305-8025-100, 37, 2-1/2" GEAR HOUSING, LA-1688-25

37-H-30 --- 305-8030-100, 37, 3" GEAR HOUSING, LA-1688-30

37-PEC --- 305-3100-100, 37, PORT END COVER, NA-1603

37M-BC --- 305-7300-100, 37, BEARING CARRIER BLANK MOTOR, JA-1687

37M-SEC-2C --- 305-5021-401, 37, 2 BOLT "C" SHAFT END COVER w/case drain, MA-1686-3

37M-SEC-4C --- 305-5031-403, 37, 4 BOLT "C" SHAFT END COVER w/case drain, HA-1686-3

50-PEC --- 313-3120-100SP, 51, PORT END COVER SPECIAL, (can port out the sides), DOWELED

51-H-05 --- 313-8205-100, 25/51, 1/2" GEAR HOUSING, MA-1688-05, DOWELED

51-H-07 --- 313-8207-100, 25/51, 3/4" GEAR HOUSING, MA-1688-07, DOWELED

51-H-10 --- 313-8210-100, 25/51, 1" GEAR HOUSING, MA-1688-10, DOWELED

51-H-12 --- 313-8212-100, 25/51, 1-1/4" GEAR HOUSING, MA-1688-12, DOWELED

51-H-15 --- 313-8215-100, 25/51, 1-1/2" GEAR HOUSING, MA-1688-15, DOWELED

51-H-17 --- 313-8217-100, 25/51, 1-3/4" GEAR HOUSING, MA-1688-17, DOWELED

51-H-20 --- 313-8220-100, 25/51, 2" GEAR HOUSING, MA-1688-20, DOWELED

51-H-22 --- 313-8222-100, 25/51, 2-1/4" GEAR HOUSING, MA-1688-22, DOWELED

51-H-25 --- 313-8225-100, 25/51, 2-1/2" GEAR HOUSING, MA-1688-25, DOWELED

51-H-30 --- 313-8230-100, 25/51, 3" GEAR HOUSING, MA-1688-30, DOWELED

51-PEC --- 313-3120-100, 51, PORT END COVER, ZA-1603, DOWELED

51-PEC-L --- 313-3420-100, 51, PORT END COVER, LARGE PORTS, ZA-1603-RP, DOWELED

51M-BC --- 313-7740-100, 51 MOTOR, BEARING CARRIER BLANK, TA-1687, DOWELED

51M-SEC-2/4B --- 313-5057-401, 51, 2/4 BOLT "B" SHAFT END COVER w/case drain, DOWELED

51M-SEC-2B --- 313-5027-401, 51, 2 BOLT "B" SHAFT END COVER w/case drain, RB-1685-3, DOWELED

51M-SEC-2C --- 313-5027-402, 51, 2 BOLT "C" SHAFT END COVER w/case drain, NB-1685-3, DOWELED

51M-SEC-2CS --- 313-5027-406, 51, 2 BOLT "C" SHORT SHAFT END COVER, LB-1685-3, DOWELED

51M-SEC-4B --- 313-5037-401, 51, 4 BOLT "B" SHAFT END COVER w/case drain, HB-1685-3, DOWELED

51M-SEC-4C --- 313-5037-402, 51, 4 BOLT "C" SHAFT END COVER w/case drain, KB-1685-3, DOWELED

51M-SEC-PAD --- 313-5017-401, 51, PAD MOUNT SHAFT END COVER w/case drain, MB-1685-3, DOWELED

51P-BC --- 313-7723-100, 51 PUMP, BEARING CARRIER w/common suction, TA-1687-11, DOWELED