PART NO.  SPL.PAGE  DESCRIPTION                                                                     
2A457     15.A.11   Bearing -ball (water pump) [Fin(E)GB39864ex39401-39525]
1H1153    sup.11    Bearing (with spindle) -(w.pump rep.kit, 12H839 pump, engine unit, sup)
1H1153    16.A.11   Bearing (with spindle) -(w.pump 1H1149, engine unit, 1600)
1H1153    16.A.31   Bearing (with spindle) -(w.pump 1H1149, engine unit, 1622)
8G698     15.A.11   Seal -water pump [Fin(E)GB39864 except 39401-39525]
8G698     15.A.11   Seal -water pump [Com(E)GB39365 except 39401-39525]
8G698     16.A.11   Seal -water pump -(w.pump 1H1149, engine unit, 1600)
8G698     16.A.31   Seal -water pump -(w.pump 1H1149, engine unit, 1622) -changed to 13H772
13H772    16.A.11   Seal -(pump assy 12H839, water, engine unit) -(was 8G698)
13H772    16.A.31   Seal -(w.pump rep.kit, 12H839 pump, engine unit) -(was 8G698)
AEB156    TC.A.15   Seal -(water.pump, engine, Twin Cam)
AEF136    TC.A.15   Bearing (2) -(water.pump, engine, Twin Cam)

2A457
Ball bearing for MGA water pump, 1500 early, (2 required).
ID: 0.500 in -- 12.70 mm
OD: 1.3125-in -- 33.34 mm
Width : 0.375 in --9.53 mm
Details:Single row, Conrad, Open type, Medium internal clearance, Steel cage.

Alternate part numbers:
FAG 	         LS-5
FBC 	         LS-5
FEDERAL/SCHATZ   LS-5
NORMA HOFFMAN    LS-5
RH               LJ-1/a
RIV              PA-4
SKF              RLS 4
STEYR            RLS-4