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          Bosch 1987237075 - Voltage Regulator

          MPN: 1987237075
          The Bosch 1987237075 Voltage Regulator stabilizes voltage output, preventing battery issues and ensuring reliable electrical performance in your Mercedes-Benz.
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $12.54
          In stock

          Product Overview

          The Bosch Voltage Regulator part number 1987237075 is an essential component for your Mercedes-Benz vehicle. Engineered to OEM standards, this premium-grade voltage regulator ensures that your car's electrical system receives stable and reliable voltage. Designed to provide optimal performance, it is a direct replacement for part number 0021549206, guaranteeing a perfect fit and functionality. This high-quality voltage regulator is built to regulate the output voltage of the alternator, preventing both overcharging and undercharging of the battery, which not only extends the life of your vehicle's battery but also enhances the overall performance of your electrical system. Choose Bosch 1987237075 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This Bosch 1987237075 is equivalent to or replaces the following part numbers: 0021549206

          Vehicle Compatibility

          • Mercedes-Benz CLK320 3.2 V6 (2000–2003)
          • Mercedes-Benz CLK430 4.3 V8 (2000–2003)
          • Mercedes-Benz E320 3.2 V6 (1998–2003)
          • Mercedes-Benz E430 4.3 V8 (2000–2003)
          • Mercedes-Benz E55 AMG 5.5 V8 (2000–2003)
          • Mercedes-Benz SL500 5.0 V8 (1998–2003)
          • Mercedes-Benz SL600 6.0 V12 (1998–2003)
          • Mercedes-Benz S500 5.0 V8 (1998–2003)
          • Mercedes-Benz S600 6.0 V12 (1998–2003)
          • Mercedes-Benz C230 2.3 L4 (1998–2003)

          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 Bosch 1987237075 Voltage Regulator do?

          The Bosch Voltage Regulator stabilizes and regulates the voltage output from the alternator to ensure that your vehicle's electrical system operates smoothly. It prevents battery overcharging and undercharging, which can lead to battery failure and other electrical issues.

          How do I know if my Voltage Regulator needs replacement?

          Common signs of a failing voltage regulator include dimming or flickering headlights, battery warning lights on the dashboard, electrical component malfunctions, and frequent battery failures.

          Can I install the Bosch 1987237075 myself?

          Yes, the Bosch Voltage Regulator is designed for easy installation, making it a viable option for DIY enthusiasts. However, ensure that you follow proper safety precautions during installation.

          What are the symptoms of a faulty Voltage Regulator?

          Symptoms of a faulty voltage regulator may include erratic electrical behavior, such as dimming lights, malfunctioning electrical components, and increased battery drain. If you see DTCs such as P0562, P0563, it may indicate a failing Voltage Regulator.

          Why should I choose Bosch for my Voltage Regulator needs?

          Choosing Bosch means you are opting for a manufacturer known for quality and reliability. Order Bosch 1987237075 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
              4255551
            • Weight
              0.05 lbs
            • Manufacturer Part #
              1987237075
          • Brand
            Bosch
          • Manufacturer
            Bosch
          • MPN
            1987237075
          • Part Type
            Voltage Regulator
          • Cross Reference Numbers
            0021549206
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          1993Mercedes-Benz500SECBase (5.0 V8 GAS)Notes: For cars with BOSCH Alternator., from engine # 026967
          1993Mercedes-Benz500SELBase (5.0 V8 GAS)Notes: For cars with BOSCH Alternator., from engine # 026967
          1993Mercedes-Benz300E4Matic (3.0 L6 GAS)Notes: For cars with BOSCH Alternator., from engine # 023096
          1993Mercedes-Benz300SLBase (3.0 L6 GAS)Transmission Control: Automatic, Transmission Control: Manual, Notes: For cars with BOSCH Alternator., from engine # 014274, Notes: For cars with BOSCH Alternator., from engine # 001591
          1993Mercedes-Benz300TE4Matic (3.0 L6 GAS)Notes: For cars with BOSCH Alternator., from engine # 023096
          1993Mercedes-Benz400SELBase (4.2 V8 GAS)Notes: For cars with BOSCH Alternator., from engine # 012761
          1992Mercedes-Benz500SELBase (5.0 V8 GAS)Notes: For cars with BOSCH Alternator., from engine # 026967
          1992Mercedes-Benz300E4Matic (3.0 L6 GAS)Notes: For cars with BOSCH Alternator., from engine # 023096
          1992Mercedes-Benz300SLBase (3.0 L6 GAS)Transmission Control: Automatic, Transmission Control: Manual, Notes: For cars with BOSCH Alternator., from engine # 014274, Notes: For cars with BOSCH Alternator., from engine # 001591
          1992Mercedes-Benz300TE4Matic (3.0 L6 GAS)Notes: For cars with BOSCH Alternator., from engine # 023096
          1992Mercedes-Benz400SEBase (4.2 V8 GAS)Notes: For cars with BOSCH Alternator., from engine # 012761
          1998Mercedes-BenzE320Base (3.2 V6 GAS)Notes: For cars with BOSCH Alternator., thru chassis # B 080431, thru chassis # F 180102, thru chassis # T 091960, Notes: For cars with BOSCH Alternator.
          1998Mercedes-BenzE3204Matic (3.2 V6 GAS)Notes: For cars with BOSCH Alternator., thru chassis # B 080431, thru chassis # F 180102, thru chassis # T 091960
          1999Mercedes-BenzE3204Matic (3.2 V6 GAS)Notes: For cars with BOSCH Alternator., thru chassis # B 080431, thru chassis # F 180102, thru chassis # T 091960
          1999Mercedes-BenzE320Base (3.2 V6 GAS)Notes: For cars with BOSCH Alternator., thru chassis # B 080431, thru chassis # F 180102, thru chassis # T 091960, Notes: For cars with BOSCH Alternator.
          2000Mercedes-BenzE3204Matic (3.2 V6 GAS)Notes: For cars with BOSCH Alternator., thru chassis # B 080431, thru chassis # F 180102, thru chassis # T 091960
          2000Mercedes-BenzE320Base (3.2 V6 GAS)Notes: For cars with BOSCH Alternator., thru chassis # B 080431, thru chassis # F 180102, thru chassis # T 091960
          2001Mercedes-BenzE320Base (3.2 V6 GAS)Notes: For cars with BOSCH Alternator., thru chassis # B 080431, thru chassis # F 180102, thru chassis # T 091960
          2001Mercedes-BenzE3204Matic (3.2 V6 GAS)Notes: For cars with BOSCH Alternator., thru chassis # B 080431, thru chassis # F 180102, thru chassis # T 091960
          2002Mercedes-BenzE3204Matic (3.2 V6 GAS)Notes: For cars with BOSCH Alternator., thru chassis # B 080431, thru chassis # F 180102, thru chassis # T 091960
          2002Mercedes-BenzE320Base (3.2 V6 GAS)Notes: For cars with BOSCH Alternator., thru chassis # B 080431, thru chassis # F 180102, thru chassis # T 091960
          2003Mercedes-BenzE320Base (3.2 V6 GAS)Notes: For cars with BOSCH Alternator., thru chassis # B 080431, thru chassis # F 180102, thru chassis # T 091960
          2003Mercedes-BenzE3204Matic (3.2 V6 GAS)Notes: For cars with BOSCH Alternator., thru chassis # B 080431, thru chassis # F 180102, thru chassis # T 091960
          1994Mercedes-BenzS420Base (4.2 V8 GAS)Notes: For cars with BOSCH Alternator., from engine # 012761
          1994Mercedes-BenzS500Base (5.0 V8 GAS)Notes: For cars with BOSCH Alternator., from engine # 026967
          1995Mercedes-BenzS420Base (4.2 V8 GAS)Notes: For cars with BOSCH Alternator., from engine # 012761
          1995Mercedes-BenzS500Base (5.0 V8 GAS)Notes: For cars with BOSCH Alternator., from engine # 026967
          1990Mercedes-Benz300E4Matic (3.0 L6 GAS)Notes: For cars with BOSCH Alternator., from engine # 023096
          1990Mercedes-Benz300SLBase (3.0 L6 GAS)Transmission Control: Automatic, Transmission Control: Manual, Notes: For cars with BOSCH Alternator., from engine # 014274, Notes: For cars with BOSCH Alternator., from engine # 001591
          1990Mercedes-Benz300TE4Matic (3.0 L6 GAS)Notes: For cars with BOSCH Alternator., from engine # 023096
          1991Mercedes-Benz300E4Matic (3.0 L6 GAS)Notes: For cars with BOSCH Alternator., from engine # 023096
          1991Mercedes-Benz300SLBase (3.0 L6 GAS)Transmission Control: Manual, Transmission Control: Automatic, Notes: For cars with BOSCH Alternator., from engine # 001591, Notes: For cars with BOSCH Alternator., from engine # 014274
          1991Mercedes-Benz300TE4Matic (3.0 L6 GAS)Notes: For cars with BOSCH Alternator., from engine # 023096
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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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