Alternator for Cat 236D, 242D, 246D, 257D, 259D, 262D, 277D, 279D, 287D & 289D | 397-9953

Fits Models At A Glance:

• Cat Skid Steer Loaders: 236D, 242D, 246D, 257D, 262D
• Cat Compact Track Loaders: 259D, 279D, 289D
• Cat Multi Terrain Loaders: 257D, 277D, 287D

Key Notes:

• Part Number: 397-9953
• Interchange Numbers: A5TA8277, 1G398-64012, 23992, 400-48201
• Voltage: 12V
• Amperage: 80A
• Rotation: Clockwise (CW)
• Pulley: 1-groove
• Regulator: Internal
• Engine: Cat C3.3B diesel — fitted to applicable Cat D-series skid steer loaders, compact track loaders, and multi terrain loaders
• Condition: Aftermarket replacement part

Common Use Case or Symptoms: Use when the battery warning light is on, the battery is consistently undercharged or dead despite normal use, electrical components are dimming or shutting off during operation, or the alternator tests below rated output voltage — a failing alternator cannot sustain the battery charge needed to run controls, lighting, and electronic systems on applicable Cat D-series equipment.

Why Choose Broken Tractor:

• ✅ Four Interchange Numbers Cross-Referenced: 397-9953 interchanges with A5TA8277, 1G398-64012, 23992, and 400-48201 — all confirmed so you find the correct alternator regardless of which number appears in your parts manual or service records.
• ✅ D-Series Specific: Engineered for the Cat C3.3B diesel engine fitted across the D-series skid steer, compact track loader, and multi terrain loader lineup — ensures correct mounting geometry, pulley alignment, and electrical output for these specific machines.
• ✅ Fast Shipping from a U.S.-Based Team: In-stock and ready to ship from our U.S. warehouses.