Bosch
Alternator (Remanufactured)

Bosch AL0855X Alternator

Brand Bosch AL0855X
Voltage 12
Plug Clock Rear View Main Mounting Ear at 6 O Clock 1
Plug Type 367
Fan Type Internal
Rotation Direction Clockwise
External Fan Included Yes
One Wire Capable No
Pulley Included Yes
External Regulator Included Yes
Pulley Groove Quantity 5
Case Color Aluminum
Outside Pulley Diameter 56
Regulator Type Internal
Case Material Aluminum
Amperage Rating 120
New Or Remanufactured Remanufactured
Original Equipment Manufacturer Names Bo, va
Packaging Box
Pulley Type 5s
Pulley Type / Belt Type (Alternator) 5s-cp
Product line Alternator (Remanufactured)
Fits Volkswagen · 2 vehicles

Remanufactured unit. Built and tested for dependable charging performance.

Aluminum case. Helps keep weight down while resisting corrosion.

Pulley included. Ready for a more complete installation.

Cross-references 028903031 for the same application. See all 1.

$269.90Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $269.90
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Free returns within 60 days if it doesn't fit when fitment is verified.

Bosch AL0855X Remanufactured Alternator

The Bosch AL0855X is a remanufactured 12-volt alternator built for steady charging performance and dependable electrical output. It is a direct-fit option for select Volkswagen Passat applications, including 2004 and 2005 models with the 120 amp alternator setup.

Bosch Premium Alternators are remanufactured, then built and tested to support consistent performance and reliability in everyday driving conditions.

Key Features

  • Remanufactured Bosch alternator for charging system service
  • 12-volt unit with 120 amp amperage rating
  • Internal fan design with clockwise rotation
  • Internal regulator with external regulator included
  • Pulley included with 5-groove belt configuration
  • Aluminum case and aluminum case color
  • Rear plug clock position: 6 o’clock main mounting ear view
  • Plug type 367
  • Outside pulley diameter: 56 mm

Detailed Description

Built for OE-style charging system replacement, the Bosch AL0855X alternator is designed for Volkswagen Passat models that use the 120 amp alternator configuration. It supports stable battery charging and electrical system operation, making it a practical choice when replacing a worn or failing alternator on a 2004 Volkswagen Passat or a 2005 Volkswagen Passat. The AL0855X part number is also useful when cross-checking Bosch alternator listings for the same application.

This part cross-references Bosch 028903031 for the same application.

What It Helps Address

  • Battery warning light caused by alternator output loss
  • Dim headlights or inconsistent electrical performance
  • Slow battery recovery after starting
  • Charging system noise or irregular operation
  • Failure of the original alternator on a Volkswagen Passat

Installation Notes and Tips

Verify the vehicle’s alternator configuration, plug type, pulley groove count, and amperage rating before installation. This Bosch AL0855X alternator is not one-wire capable and uses an internal regulator design. Confirm fitment against the existing unit on your 2004-2005 Volkswagen Passat before replacement to ensure the connector, pulley, and mounting ear orientation match.

Quality Assurance

Bosch remanufactured alternators are built and tested to meet the demands of charging system replacement work. The AL0855X is engineered for dependable operation in the specified Volkswagen Passat applications and follows Bosch’s premium remanufacturing standards.

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2005VolkswagenPassat2.0LL4N/AOptional; To 120 Amp Alternator; Alternator (Remanufactured)
2004VolkswagenPassat2.0LL4N/ATo 120 Amp Alternator; Alternator (Remanufactured)
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
028903031