Bosch AL7677X Alternator

Remanufactured charging replacement

Bosch AL7677X is a remanufactured alternator built for 12-volt charging systems that need stable output and dependable operation. It is a direct-fit electrical replacement for select Ford Super Duty trucks with dual alternators, including Ford F-250 Super Duty, Ford F-350 Super Duty, Ford F-450 Super Duty, and Ford F-550 Super Duty applications.

Key features

• 157-amp output for strong charging performance.
• Internal regulator and internal fan for integrated control and cooling.
• Includes pulley with 8-groove belt drive configuration.
• Clockwise rotation with 337 plug type and 11 o'clock rear plug clocking.
• Aluminum case construction with a 70 mm outside pulley diameter.
• Remanufactured Bosch alternator, part number AL7677X.

Detailed fitment and function

This Bosch alternator is engineered for vehicles that rely on consistent electrical supply for starting, battery charging, and accessory operation. The AL7677X matches the listed Ford Super Duty fitments for 2011-2016 model years and is specified for top-mounted dual-alternator applications. Bosch AL7677X is a practical replacement when the charging system shows reduced output, unstable voltage, or alternator-related warning lights. This part cross-references Ford BC3Z10346C for the same application.

Common issues this part can address

• Low battery charge after driving.
• Charging system warning light on the dash.
• Weak electrical output under load.
• Noise or wear from a failing alternator assembly.
• Inconsistent voltage from the charging system.

Installation notes and tips

Verify plug type, pulley configuration, rotation direction, and belt groove count before installation. This alternator is listed for 2011-2016 Ford F-250 Super Duty, F-350 Super Duty, F-450 Super Duty, and F-550 Super Duty models with dual alternators and top-mounted placement. Confirm the vehicle uses the specified 12-volt system and matching mounting-ear clocking for proper fit.

Quality assurance

Bosch Premium Alternators are designed, built, and tested for performance and reliability. The remanufactured construction provides a service replacement option backed by Bosch engineering standards.