Wilson 90-25-1105 Alternator

Remanufactured Alternator for Charging System Repair

The Wilson 90-25-1105 remanufactured alternator is built for 12-volt charging systems that need dependable output and OE-style fitment. With 80 amps, IR/EF design, and a J180 mount type, it is a practical replacement for applications using a Hitachi unit.

Wilson remanufactured alternators are fully torn down, cleaned, rebuilt with components selected to Wilson standards, and tested to meet OE-level specifications. That process helps restore charging performance on vehicles and equipment where uptime matters.

Key Features

• Part number: 90-25-1105
• 80 amp output for 12-volt systems
• IR/EF design for the specified charging system layout
• J180 mount type for direct replacement applications
• 2:30 plug clocking for connector alignment
• OE unit reference: Hitachi
• Remanufactured and tested to meet OE specifications

Product Details

This Wilson alternator is intended for charging system service where a Hitachi-style replacement is required. The 90-25-1105 is a fitment-focused solution for vehicles and equipment that need stable electrical output, proper mounting, and correct plug orientation. Search terms such as Wilson alternator 90-25-1105, Hitachi replacement alternator, and 80 amp J180 alternator are commonly used for this type of repair.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems It Can Help Solve

• Low battery charge or repeated battery drain
• Dim lights or unstable electrical performance
• Warning lights related to charging system output
• Noise or failure from a worn alternator assembly
• Charging issues on equipment using a Hitachi OE unit

Installation Notes and Tips

Verify the existing alternator’s amperage, mount style, plug clocking, and OE reference before installation. Confirm the vehicle or equipment uses a J180 mount and a 2:30 plug orientation to match the 90-25-1105. For best results, inspect the battery, belt condition, wiring, and charging circuit before replacing the alternator.

Quality Assurance

Wilson remanufactured alternators are rebuilt through a complete teardown, cleaning, reassembly with components made to Wilson standards, and rigorous testing to help meet and exceed OE specifications. This process supports reliable charging performance for service on vehicles and equipment.