Bosch AL0891N Alternator

Reliable Bosch Alternator for Audi Models

The Bosch AL0891N Alternator (New) is engineered to provide consistent electrical charging performance for select Audi vehicles. Designed with precision, this alternator supports the electrical system needs of Audi A4, A4 Quattro, A5, A5 Quattro, Q5, and S4 models.

• Voltage: 14V for stable power output
• Amperage Rating: 140A to meet high electrical demands
• Internal fan type with included external fan for efficient cooling
• Clockwise rotation direction with 6-groove pulley included
• Durable aluminum case and pulley for long-lasting performance
• Internal regulator type for simplified installation
• Plug type 464 with 3-pin rear view main mounting ear at 6 o'clock

About the Bosch Alternator (New) Product Line

The Bosch Alternator (New) product line focuses on delivering brand-new, high-quality alternators designed to meet or exceed original equipment specifications. This ensures reliable fitment and performance for vehicles requiring replacement alternators. The AL0891N is part of this line, offering a robust 140-amp output and an aluminum case for durability, making it suitable for demanding electrical systems in Audi vehicles.

Detailed Product Description

The Bosch AL0891N alternator features a 14-volt output and a 140-amp amperage rating, providing sufficient power for modern Audi electrical systems. Its internal fan design, complemented by an included external fan, helps maintain optimal operating temperatures. The alternator rotates clockwise and includes a 6-groove pulley with a 56mm outside diameter, compatible with 6s-cp belt types. Constructed with an aluminum case and pulley, this alternator offers corrosion resistance and strength. The internal regulator simplifies installation by eliminating the need for an external regulator. The plug type 464 and 3-pin rear view main mounting ear at 6 o'clock ensure proper electrical connections and secure mounting.

Common Issues Addressed by This Alternator

• Failure to charge the battery properly in Audi A4, A5, Q5, and S4 models
• Electrical system malfunctions due to worn or faulty alternator components
• Overheating caused by inefficient cooling in older alternators
• Noise or pulley wear from damaged or incompatible alternator pulleys
• Intermittent power loss affecting vehicle electronics and starting reliability

Installation Notes and Tips

• Ensure compatibility with Audi A4, A4 Quattro, A5, A5 Quattro, Q5, and S4 models before installation
• Verify the clockwise rotation direction and 6-groove pulley match your vehicle’s requirements
• Check plug type 464 and mounting ear position for proper fitment
• Inspect belt condition and tension when replacing the alternator pulley
• Follow manufacturer torque specifications for mounting bolts to avoid damage

Quality Assurance and Warranty

This Bosch AL0891N alternator is a new, original equipment quality part designed to meet strict manufacturing standards. The aluminum case and internal regulator contribute to its durability and reliable performance. Bosch alternators typically come with a limited warranty covering defects in materials and workmanship; please refer to the specific warranty terms provided at purchase.