MPA Electrical 11903 Alternator

Remanufactured Alternator for Ford Super Duty

MPA Electrical 11903 is a remanufactured 12-volt alternator built for OE fit, form, and function. It is configured with an internal regulator, internal fan, clockwise rotation, and a 6-groove serpentine pulley for direct replacement service on select Ford Super Duty applications.

Compatible With 2020-2022 Ford F-250 Super Duty, 2020-2022 Ford F-350 Super Duty, and 2021-2023 Ford E-350 Super Duty. This part number 11903 is a practical OE-style charging system replacement for trucks and vans that need stable electrical output.

Key Features

• 12.0-volt remanufactured alternator
• 240.0 amp amperage rating
• Internal voltage regulator
• Internal fan design
• Clockwise (right) rotation
• 6-groove serpentine pulley included
• Nippondenso family design
• Rear plug clock position: 11 o'clock, main mounting ear at 6 o'clock

Product Details

MPA Electrical Remanufactured alternators are rebuilt to restore OE-style charging performance using remanufacturing and testing processes that verify fit and function before installation. Part number 11903 is engineered for Ford F-250 Super Duty, Ford F-350 Super Duty, and Ford E-350 Super Duty applications where a 240-amp charging unit with an internal regulator and serpentine belt drive is required. Cross-reference part numbers include LC3T-10300-CC and LC3Z 10346-B for the same application.

Common Problems This Part Can Help Solve

• Battery warning light caused by weak alternator output
• Low charging voltage during driving or idling
• Electrical system instability from a failing internal regulator
• Accessory performance issues tied to insufficient amperage
• Noise or belt-drive concerns from a worn alternator pulley assembly

Installation Notes and Tips

Verify pulley groove count, rotation direction, plug clock position, and mounting ear orientation before installation. Confirm the vehicle uses a serpentine belt drive and matches the listed Ford Super Duty or E-350 Super Duty fitment for part number 11903. Inspect the battery, belt condition, and charging circuit before replacing the alternator to help prevent repeat failure.

Quality Assurance

This remanufactured alternator is produced to OE fit, form, and function standards and is tested using current remanufacturing and validation methods to support reliable replacement performance.