24V 45A Alternator - Case Excavators 9010, 9010B, 9020, 9020B, 9030, 9030B with 390 Diesel
New 24 volt 45 amp Bosch-type alternator for Case 9000-series excavators equipped with 390 diesel engines. Fits models 9010, 9010B, 9020, 9020B, 9030, and 9030B (1994-1998). Also fits Case crawler tractors 850D-850G, 1150E-1550, and loaders 621-921. Internal regulator with negative ground polarity. M8-1.25 output stud. Replaces Case AR187916, Cummins 3020678 and 3284392. Weight 9.905 lbs (4.50 kg).
OEM PART NUMBERS:
Case: AR187916
Cummins: 3020678
Cummins: 3284392
SPECIFICATIONS:
Voltage: 24V
Amperage: 45A
Regulator: Internal
Output Stud: M8-1.25
Weight: 9.905 lbs / 4.50 kg
APPLICATIONS:
Case 9010/9010B/9020/9020B/9030/9030B Excavator 390 DSL (1994-1998)
Case Crawler Tractors (1990-1999)
Case Loaders 621-921 (1989-1993)
⚠️ Verify OEM part number from your original unit before ordering to ensure proper fitment.