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          Genuine BMW 12317515319 - Voltage Regulator

          MPN: 12317515319
          The Genuine BMW 12317515319 Voltage Regulator ensures stable electrical output, preventing battery drain and supporting engine performance. Designed for easy installation in select BMW models.
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $190.93
          Out of stock

          Product Overview

          The Genuine BMW Voltage Regulator (part number 12317515319) is a premium automotive component specifically designed to maintain optimal performance in your BMW. This high-quality voltage regulator plays a crucial role in ensuring a stable and reliable electrical output to your vehicle's charging system, preventing battery drain and supporting overall engine performance. Engineered to OEM standards, this voltage regulator is built with robust materials that can withstand the demands of daily driving and various weather conditions, promising durability and longevity. Upon installation, you can expect uninterrupted operation of your BMW for years to come. Choose Genuine BMW12317515319 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This Genuine BMW12317515319 is equivalent to or replaces the following part numbers: 12 31 7 515 319, 12317515319.

          Vehicle Compatibility

          • BMW Z4 2.5i 2.5 L6 (2003–2005)
          • BMW Z4 3.0i 3.0 L6 (2003–2005)
          • BMW 530i Base 3.0 L6 (2004)

          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 Fit™ - 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 Genuine BMW 12317515319 Voltage Regulator do?

          The voltage regulator maintains the electrical output of the vehicle's charging system, ensuring that the battery is properly charged and that electrical components function correctly.

          How do I know if my Voltage Regulator needs replacement?

          Signs of a failing voltage regulator include dimming headlights, electrical issues, battery warning lights on the dashboard, and difficulty starting the vehicle.

          Can I install the Genuine BMW 12317515319 myself?

          Yes, the installation of the Genuine BMW Voltage Regulator is straightforward and can typically be performed by DIY enthusiasts. However, ensure proper precautions are taken to avoid electrical hazards.

          What are the symptoms of a faulty Voltage Regulator?

          Common symptoms of a failing voltage regulator include fluctuating voltage levels, dimming lights, and battery drainage. If you see DTCs such as P0562, P0563, it may indicate a failing voltage regulator.

          Why should I choose Genuine BMW for my Voltage Regulator needs?

          Genuine BMW parts are designed for optimal performance and reliability in your vehicle. Order Genuine BMW12317515319 today for a factory-correct replacement that restores safety and performance.

          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.

            • eEuroparts SKU
              946336
            • Weight
              0.2 lbs
            • Dimensions (L x W x H)
              4.9125 x 2.8125 x 3.955 in
            • Manufacturer Part #
              12317515319
          • Brand
            Genuine BMW
          • Manufacturer
            Genuine BMW
          • MPN
            12317515319
          • Part Type
            Voltage Regulator
          • OE Part Numbers
            12 31 7 515 319, 12317515319
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          2003BMWZ43.0i (3.0 L6 GAS)
          2003BMWZ42.5i (2.5 L6 GAS)
          2004BMWZ43.0i (3.0 L6 GAS)
          2004BMWZ42.5i (2.5 L6 GAS)
          2004BMW530iBase (3.0 L6 GAS)Notes: To 03/04, Bosch Alternator
          2005BMWZ43.0i (3.0 L6 GAS)
          2005BMWZ42.5i (2.5 L6 GAS)
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          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.

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