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Bosch AL0825N - Alternator
Product Overview
The Bosch AL0825N Alternator is a premium-grade replacement alternator designed to meet or exceed OEM standards for Audi and Volkswagen vehicles. This 150A alternator ensures reliable performance and longevity, making it an ideal choice for both DIY enthusiasts and professional technicians. With Bosch's reputation for quality, you can trust this component to deliver optimal electrical output to your vehicle's systems. Choose Bosch AL0825N for dependable performance and peace of mind every time you service your vehicle.
Cross Reference Numbers
This Bosch AL0825N is equivalent to or replaces the following part numbers: 06B903016AC, 06B903016Q, 06D903016.
Vehicle Compatibility
- Audi A4 2.0L4 (2005–2009)
- Audi A4 Cabriolet 2.0L4 (2005–2009)
- Audi A4 Quattro 2.0L4 (2005–2009)
- Audi A4 Quattro Avant 2.0L4 (2005–2009)
- Audi A4 Quattro Cabriolet 2.0L4 (2005–2009)
- Audi A4 1.8L4 (2005–2009)
- Audi A4 Quattro 1.8L4 (2005–2006)
- Audi A4 Cabriolet 1.8L4 (2006–2009)
- Audi A4 Quattro Avant 1.8L4 (2005–2006)
- Audi A4 Quattro Base 1.8L4 (2004–2006)
This may also fit other applications. Please use the vehicle selector tool to verify fitment.
Why Shop at eEuroparts.com?
- Proven Expertise: Over 25 years of experience with European vehicles means we know your car inside and out.
- Exclusive Kits That Fitâ„¢ - complete repair solutions with no guesswork
- Fitment Confidence: Our accurate cataloging ensures you get the right part the first time.
- Fast, Reliable Shipping: Orders ship quickly from our U.S.-based warehouses.
- Transparent Pricing: Competitive prices with no hidden fees or surprise charges.
- Established Trust: Serving the European auto community since 2000.
Frequently Asked Questions
What does the Bosch AL0825N Alternator do?
The alternator is a crucial component of your vehicle's electrical system, converting mechanical energy from the engine into electrical energy. It charges the battery and powers the electrical systems when the engine is running, ensuring that all electrical components function reliably.
How do I know if my alternator needs replacement?
Common indicators of a failing alternator include a battery warning light illuminated on the dashboard, dimming or flickering headlights, electrical accessories malfunctioning, unusual noises such as whining or grinding sounds, and frequent dead batteries.
Can I install the Bosch AL0825N myself?
Yes, you can install the Bosch AL0825N alternator yourself if you have the necessary tools and mechanical skill. Be sure to follow proper safety precautions and consult your vehicle’s service manual for specific installation instructions.
What are the symptoms of a faulty alternator?
Symptoms of a faulty alternator include dimming lights, electrical system malfunctions, unusual noises, and a dead battery. If you see DTCs such as P0620 (Generator Control Circuit) and P0562 (System Voltage Low), it may indicate a failing alternator.
Why should I choose Bosch for my alternator needs?
Choosing Bosch ensures you receive a high-quality, factory-correct replacement that restores safety and performance. Order Bosch AL0825N today for a reliable solution to your vehicle's electrical system needs.
Note: All information on this page and in the FAQ is for general reference only. Verify fitment and consult a professional as needed. eEuroparts.com is not responsible for incorrect part selection or installation.
- BrandBosch
- ManufacturerBosch
- MPNAL0825N
- Part TypeAlternator
- OE Part Numbers06B903016Q, 06D903016
- FeaturesAlternator Finish : Aluminum
Alternator/Generator Rotation : Clockwise
Amperage Rating : 150
Brushless : No
Case Material : Aluminum
Fan Type : Internal
New Or Remanufactured : New
Outside Pulley Diameter : 55.8
Plug Clock Rear View Main Mounting Ear at 6 O Clock : 12
Product Length : 7.716535 in
Prop 65 Warning Label Required? : No
Pulley Groove Quantity : 6
Pulley Included : Yes
Pulley Type / Belt Type (Alternator) : 6S-CP
Regulator Type : Internal
Voltage : 14
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2004 | Audi | A4 | Base (1.8 L4 GAS) | Notes: To 150 Amp Alternator, with Bosch Unit, with Valeo Unit, Notes: To 150 Amp Alternator |
| 2004 | Audi | A4 | Cabriolet (1.8 L4 GAS) | Notes: To 150 Amp Alternator, with Bosch Unit, with Valeo Unit, Notes: To 150 Amp Alternator |
| 2004 | Audi | A4 Quattro | Avant (1.8 L4 GAS) | Notes: To 150 Amp Alternator |
| 2004 | Audi | A4 Quattro | Base (1.8 L4 GAS) | Notes: To 150 Amp Alternator |
| 2005 | Audi | A4 | Base (1.8 L4 GAS) | Notes: with Bosch Unit, To 150 Amp Alternator, with Valeo Unit, Notes: To 150 Amp Alternator |
| 2005 | Audi | A4 | Cabriolet (1.8 L4 GAS) | Notes: with Bosch Unit, To 150 Amp Alternator, with Valeo Unit, Notes: To 150 Amp Alternator |
| 2005 | Audi | A4 | Base (2.0 L4 GAS) | Notes: To 150 Amp Alternator |
| 2005 | Audi | A4 Quattro | Avant (1.8 L4 GAS) | Notes: To 150 Amp Alternator |
| 2005 | Audi | A4 Quattro | Base (1.8 L4 GAS) | Notes: To 150 Amp Alternator |
| 2005 | Audi | A4 Quattro | Avant (2.0 L4 GAS) | Notes: To 150 Amp Alternator |
| 2005 | Audi | A4 Quattro | Base (2.0 L4 GAS) | Notes: To 150 Amp Alternator |
| 2006 | Audi | A4 | Cabriolet (1.8 L4 GAS) | Notes: with Bosch Unit, To 150 Amp Alternator, with Valeo Unit |
| 2006 | Audi | A4 | Base (2.0 L4 GAS) | Notes: To 150 Amp Alternator |
| 2006 | Audi | A4 Quattro | Avant (2.0 L4 GAS) | Notes: To 150 Amp Alternator |
| 2006 | Audi | A4 Quattro | Base (2.0 L4 GAS) | Notes: To 150 Amp Alternator |
| 2002 | Audi | A4 | Base (1.8 L4 GAS) | Notes: To 150 Amp Alternator |
| 2002 | Audi | A4 Quattro | Avant (1.8 L4 GAS) | Notes: To 150 Amp Alternator |
| 2002 | Audi | A4 Quattro | Base (1.8 L4 GAS) | Notes: To 150 Amp Alternator |
| 2003 | Audi | A4 | Base (1.8 L4 GAS) | Notes: To 150 Amp Alternator |
| 2003 | Audi | A4 | Cabriolet (1.8 L4 GAS) | Notes: To 150 Amp Alternator |
| 2003 | Audi | A4 Quattro | Avant (1.8 L4 GAS) | Notes: To 150 Amp Alternator |
| 2003 | Audi | A4 Quattro | Base (1.8 L4 GAS) | Notes: To 150 Amp Alternator |
| 2007 | Audi | A4 | Base (2.0 L4 GAS) | Notes: To 150 Amp Alternator |
| 2007 | Audi | A4 | Cabriolet (2.0 L4 GAS) | Notes: To 150 Amp Alternator |
| 2007 | Audi | A4 Quattro | Avant (2.0 L4 GAS) | Notes: To 150 Amp Alternator |
| 2007 | Audi | A4 Quattro | Base (2.0 L4 GAS) | Notes: To 150 Amp Alternator |
| 2007 | Audi | A4 Quattro | Cabriolet (2.0 L4 GAS) | Notes: To 150 Amp Alternator |
| 2008 | Audi | A4 | Base (2.0 L4 GAS) | Notes: To 150 Amp Alternator |
| 2008 | Audi | A4 | Cabriolet (2.0 L4 GAS) | Notes: To 150 Amp Alternator |
| 2008 | Audi | A4 Quattro | Avant (2.0 L4 GAS) | Notes: To 150 Amp Alternator |
| 2008 | Audi | A4 Quattro | Base (2.0 L4 GAS) | Notes: To 150 Amp Alternator |
| 2008 | Audi | A4 Quattro | Cabriolet (2.0 L4 GAS) | Notes: To 150 Amp Alternator |
| 2009 | Audi | A4 | Base (2.0 L4 GAS) | Engine: BWT, Notes: To 150 Amp Alternator |
| 2009 | Audi | A4 | Cabriolet (2.0 L4 GAS) | Engine: BWT, Notes: To 150 Amp Alternator |
| 2009 | Audi | A4 Quattro | Avant (2.0 L4 GAS) | Engine: BWT, Notes: To 150 Amp Alternator |
| 2009 | Audi | A4 Quattro | Base (2.0 L4 GAS) | Engine: BWT, Notes: To 150 Amp Alternator |
| 2009 | Audi | A4 Quattro | Cabriolet (2.0 L4 GAS) | Engine: BWT, Notes: To 150 Amp Alternator |
Warranty Overview
At eEuroparts, we stand behind the quality of the products we sell. Every part we offer is backed by a warranty designed to give you peace of mind and protect your investment.
Standard Warranty – Most Parts
Coverage: 2 years or 24,000 miles (whichever comes first) from purchase date.
Protection: Defects in materials or workmanship under normal personal use.
Eligibility: Applies only to the original purchaser and the vehicle where the part was first installed.
Exclusions:
Wear-and-tear items (brake pads, filters, bulbs, wipers, etc.)
Commercial, fleet, rideshare, off-road, or racing use
Improper installation, misuse, accidents, or modifications
Not Covered: Labor, shipping, towing, or incidental costs.
Bison Performance Warranty – Our House Brand
Coverage: Limited Lifetime Warranty for as long as you own your vehicle.
Applies To: All products sold under the Bison Performance label.
Premium Protection: Goes beyond our standard warranty — if it’s a Bison product, the 2-year/24k mile limit is replaced with lifetime coverage.
Exclusions: Same as the standard warranty (normal wear, commercial use, improper installation, etc.).
What’s Included: Replacement of the defective product (labor and shipping excluded).
Warranty Claim Requirements
To keep claims fast and fair, we require:
Proof of purchase (invoice or order confirmation).
Photos or videos showing the defective part, order number, date, VIN, and odometer reading.
Diagnostic reports or part returns for non-visible issues may be requested.
Claims must be truthful, properly documented, and reflect normal consumer use.
Buy With Confidence: We back our products because we believe in their quality, with a transparent, customer-first warranty process you can trust. And with Bison Performance products, you’ll enjoy Limited Lifetime protection—an assurance few brands can match.
For full details and exclusions, please see our complete Warranty Terms & Conditions.
This summary is for convenience only. For full warranty coverage details, exclusions, and requirements, see our official Warranty Terms & Conditions. In case of conflict, the full policy governs.
Return Policy Overview
Most parts can be returned within 30 days of delivery if unused, uninstalled, and in original packaging.
To start a return, contact customer support via Chat or Contact Us.
Restocking fee: Up to 20% may apply for certain orders (buyer’s remorse, order errors, or special-order items)
Refunds: Issued to your original payment method within 3–5 business days after inspection
Exchanges: Not automatic — please return and reorder
Replacements: May be approved for incorrect or defective items reported within 7 days
Not returnable:
Used or installed parts
Electrical components
Opened filter kits, gaskets, or contaminated items
Final sale or custom orders
Important Notes:
Return shipping is your responsibility unless we made a verified error
Fitment is the customer’s responsibility (we can assist, but do not guarantee)
Country of origin may vary and is not grounds for return
For complete details, please see our full Return Policy.
This Returns summary is provided for convenience only. All returns, refunds, and exchanges are subject to the complete Returns Policy. In the event of any conflict, the full policy governs.
Fast, Reliable Shipping — Straight to Your Door
We ship most orders the same day when placed before 2 PM CST (Monday–Friday). Our main warehouse is just east of Nashville, TN, and we also ship from multiple locations nationwide to get your order to you as quickly as possible.
We use trusted carriers like UPS, FedEx, and USPS.
Tracking info is emailed to you as soon as your order ships.
Delivery estimates at checkout are based on carrier data, but not guaranteed.
Need help with a shipment?
If your order is missing, damaged, or incorrect, just let us know within 5 days of delivery. We’ll walk you through the quick claim process — including a few photos to help us make things right.
For complete details, please see our full Shipping Policy.
This Shipping summary is provided for convenience only. Delivery times, carrier terms, fees, restrictions, risk of loss, and other details are governed by our complete Shipping Policy. In the event of any conflict, the full policy governs.






















