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Genuine BMW 12427549396 - Alternator Ground Strap
Product Overview
The Genuine BMW 12427549396 Alternator Ground Strap is a critical component designed to ensure optimal performance of your vehicle's electrical system. This high-quality strap connects the alternator to the vehicle's ground, facilitating efficient electrical flow and preventing potential issues. With OE-level quality and reliability, this part is engineered to fit seamlessly in various BMW models, assuring you of a dependable performance. Choose Genuine BMW 12427549396 for dependable performance and peace of mind every time you service your vehicle.
Cross Reference Numbers
This Genuine BMW 12427549396 is equivalent to or replaces the following part numbers: 12 42 7 549 396, 12427549396.
Vehicle Compatibility
- 2007-2008 BMW 335xi 3.0
- 2009-2013 BMW 328i xDrive 3.0
- 2009-2013 BMW 335i xDrive 3.0
- 2013-2015 BMW X1 2.0
- 2013-2015 BMW X1 3.0
- 2006 BMW 325xi 3.0
- 2006 BMW 330xi 3.0
- 2013 BMW 328i xDrive 2.0
This also fits other applications. Please use the vehicle selector tool to verify fitment.
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Frequently Asked Questions
What is the function of the Genuine BMW 12427549396 Alternator Ground Strap?
The Genuine BMW 12427549396 Alternator Ground Strap connects the alternator to the vehicle's ground, which is essential for maintaining proper electrical flow within the system.
How do I know if I need to replace my alternator ground strap?
Signs of a failing alternator ground strap include electrical issues such as flickering lights or difficulty starting the engine. Replacing it with the Genuine BMW 12427549396 can resolve these problems.
What are some common symptoms related to a faulty ground strap?
Common symptoms include warning lights on the dashboard, engine misfires, or unusual electrical behavior. If you experience these, consider checking the Genuine BMW 12427549396 for replacement.
Are there any diagnostic trouble codes (DTCs) associated with the alternator ground strap?
While there are no specific DTCs for the alternator ground strap itself, issues can lead to codes such as P0562 (System Voltage Low) or P0620 (Generator Control Circuit). If these codes appear, inspect the ground strap.
How do I install the Genuine BMW 12427549396 Alternator Ground Strap?
Installation typically requires basic tools and knowledge of vehicle electrical systems. For best results, refer to your vehicle's service manual or consult a professional.
Order Genuine BMW 12427549396 today for a factory-correct replacement that restores safety and performance.
- BrandGenuine BMW
- ManufacturerGenuine BMW
- MPN12427549396
- OE Part Numbers12 42 7 549 396, 12427549396
- Part TypeAlternator Ground Strap
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2006 | BMW | 330xi | Base (3.0 L6 GAS) | |
| 2006 | BMW | 325xi | Base (3.0 L6 GAS) | |
| 2012 | BMW | 328i xDrive | Base (3.0 L6 GAS) | |
| 2012 | BMW | 335i xDrive | Base (3.0 L6 GAS) | |
| 2011 | BMW | 328i xDrive | Base (3.0 L6 GAS) | |
| 2011 | BMW | 335i xDrive | Base (3.0 L6 GAS) | |
| 2010 | BMW | 335i xDrive | Base (3.0 L6 GAS) | |
| 2010 | BMW | 328i xDrive | Base (3.0 L6 GAS) | |
| 2009 | BMW | 335i xDrive | Base (3.0 L6 GAS) | |
| 2009 | BMW | 328i xDrive | Base (3.0 L6 GAS) | |
| 2008 | BMW | 335xi | Base (3.0 L6 GAS) | |
| 2007 | BMW | 335xi | Base (3.0 L6 GAS) | |
| 2013 | BMW | 328i xDrive | Base (2.0 L4 GAS) | |
| 2013 | BMW | 328i xDrive | Base (3.0 L6 GAS) | |
| 2013 | BMW | 335i xDrive | Base (3.0 L6 GAS) | |
| 2013 | BMW | X1 | xDrive35i (3.0 L6 GAS) | |
| 2013 | BMW | X1 | sDrive28i (2.0 L4 GAS) | |
| 2013 | BMW | X1 | xDrive28i (2.0 L4 GAS) | |
| 2014 | BMW | X1 | xDrive35i (3.0 L6 GAS) | |
| 2014 | BMW | X1 | sDrive28i (2.0 L4 GAS) | |
| 2014 | BMW | X1 | xDrive28i (2.0 L4 GAS) | |
| 2015 | BMW | X1 | xDrive35i (3.0 L6 GAS) | |
| 2015 | BMW | X1 | sDrive28i (2.0 L4 GAS) | |
| 2015 | BMW | X1 | xDrive28i (2.0 L4 GAS) |
Warranty Overview
At Newparts, 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, use our Return Portal or contact support.
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 full details, please see our complete 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.




