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Bosch AL0891N Alternator
| Brand | Bosch AL0891N |
|---|---|
| Amperage Rating | 140 |
| Case Color | Aluminum |
| Case Material | Aluminum |
| External Fan Included | Yes |
| External Regulator Included | No |
| Fan Type | Internal |
| New Or Remanufactured | New |
| One Wire Capable | No |
| Original Equipment Manufacturer Names | BO |
| Outside Pulley Diameter | 56 |
| Plug Clock Rear View Main Mounting Ear at 6 O Clock | 3 |
| Plug Type | 464 |
| Product Length | 6.440945 in |
| Pulley Groove Quantity | 6 |
| Pulley Included | Yes |
| Pulley Type | 6S |
| Pulley Type / Belt Type (Alternator) | 6S-CP |
| Regulator Type | Internal |
| Rotation Direction | Clockwise |
| Voltage | 14 |
| Product line | Alternator (New) |
| Fits | Audi · 17 vehicles |
New alternator. Built and tested for dependable charging performance.
Internal regulator. Integrated regulation helps simplify the charging system.
Aluminum case. Lightweight construction helps resist corrosion.
Cross-references 06H903016L for the same application. See all 1.
Bosch AL0891N Alternator Overview
Bosch AL0891N is a new 14-volt alternator built for charging-system replacement on select Audi applications. It features a 140-amp amperage rating, internal regulator, internal fan, and clockwise rotation for the specified OE-style setup.
As part of Bosch Premium Alternators, this unit is engineered and tested for consistent electrical output and dependable operation in daily driving conditions. The aluminum case, included pulley, and 6-groove pulley design support direct-fit replacement needs on the listed Audi A4, A4 Quattro, A5, A5 Quattro, Q5, and S4 applications.
Key Features
- Part number: AL0891N
- 14-volt alternator with 140-amp output
- New unit with internal voltage regulator
- Internal fan and external fan included
- Clockwise rotation
- Aluminum case and aluminum housing material
- Included pulley with 6-groove design
- Plug type 464 with 3 o’clock rear-view plug clocking
Product Details
Bosch AL0891N is a charging-system alternator for vehicles that require a 140-amp OE-style replacement. The Bosch Premium Alternators line focuses on performance and reliability through controlled manufacturing and testing, making this unit a practical choice for restoring proper battery charging and electrical system output. The AL0891N part number is also useful when cross-checking catalog listings for the same application.
This part cross-references 06H903016L for the same application.
Vehicle Fitment
- Fits 2009-2012 Audi A4, N/A, to 140 amp alternator; Alternator (New)
- Fits 2009-2012 Audi A4 Quattro, N/A, to 140 amp alternator; Alternator (New)
- Fits 2010-2012 Audi A5, N/A, to 140 amp alternator; Alternator (New)
- Fits 2010-2012 Audi A5 Quattro, N/A, to 140 amp alternator; Alternator (New)
- Fits 2011-2012 Audi Q5, N/A, to 140 amp alternator; Alternator (New)
- Fits 2010 Audi S4, N/A, to 140 amp alternator; Alternator (New)
What It Helps Address
- Low charging output from a worn alternator
- Battery warning lights caused by charging-system failure
- Dim lights or unstable electrical performance under load
- Charging issues on Audi A4 and Audi A5 applications
- Alternator replacement needs on Audi Q5 and Audi S4 models
Installation Notes
Verify pulley type, plug type, rear plug clocking, and amperage rating before installation. Confirm the vehicle uses a 140-amp alternator specification and match the clockwise rotation requirement to the original unit. Check belt alignment and charging-system connections during replacement.
Quality Assurance
Bosch Premium Alternators are built and tested to support reliable electrical performance. This new AL0891N alternator is manufactured to meet the listed application requirements for proper fitment and charging-system function.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2012 | Audi | A4 | 2.0L | L4 | N/A | To 140 Amp Alternator; Alternator (New) |
| 2012 | Audi | A4 Quattro | 2.0L | L4 | N/A | To 140 Amp Alternator; Alternator (New) |
| 2012 | Audi | A5 | 2.0L | L4 | N/A | To 140 Amp Alternator; Alternator (New) |
| 2012 | Audi | A5 Quattro | 2.0L | L4 | N/A | To 140 Amp Alternator; Alternator (New) |
| 2012 | Audi | Q5 | 2.0L | L4 | N/A | To 140 Amp Alternator; Alternator (New) |
| 2011 | Audi | A4 | 2.0L | L4 | N/A | To 140 Amp Alternator; Alternator (New) |
| 2011 | Audi | A4 Quattro | 2.0L | L4 | N/A | To 140 Amp Alternator; Alternator (New) |
| 2011 | Audi | A5 | 2.0L | L4 | N/A | To 140 Amp Alternator; Alternator (New) |
| 2011 | Audi | A5 Quattro | 2.0L | L4 | N/A | To 140 Amp Alternator; Alternator (New) |
| 2011 | Audi | Q5 | 2.0L | L4 | N/A | To 140 Amp Alternator; Alternator (New) |
| 2010 | Audi | A4 | 2.0L | L4 | N/A | To 140 Amp Alternator; Alternator (New) |
| 2010 | Audi | A4 Quattro | 2.0L | L4 | N/A | To 140 Amp Alternator; Alternator (New) |
| 2010 | Audi | A5 | 2.0L | L4 | N/A | To 140 Amp Alternator; Alternator (New) |
| 2010 | Audi | A5 Quattro | 2.0L | L4 | N/A | To 140 Amp Alternator; Alternator (New) |
| 2010 | Audi | S4 | 3.0L | V6 | N/A | To 140 Amp Alternator; Alternator (New) |
| 2009 | Audi | A4 | 2.0L | L4 | N/A | To 140 Amp Alternator; Alternator (New) |
| 2009 | Audi | A4 Quattro | 2.0L | L4 | N/A | To 140 Amp Alternator; Alternator (New) |
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