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          ACDelco 84009371 - Alternator

          MPN: 84009371
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $317.95
          In stock

          Product Overview

          The ACDelco 84009371 Alternator is an essential component designed to keep your vehicle's electrical system running smoothly. This alternator provides reliable power for your vehicle’s battery and electrical systems, ensuring optimal performance and longevity. Built to OE-level quality, the 84009371 guarantees a perfect fit and durability for Cadillac models. Trust ACDelco for high-quality automotive parts that meet the demands of your vehicle. Choose ACDelco 84009371 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This ACDelco 84009371 is equivalent to or replaces the following part numbers:

          Vehicle Compatibility

          • Cadillac SRX 4.6 V8 (2004-2009)
          • Cadillac STS 4.6 V8 (2005-2010)
          • Cadillac STS 4.4 V8 (2006-2009)

          This also fits other applications. Please use the vehicle selector tool to verify fitment.

          Why Choose Newparts.com?

          • Trusted by DIYers and pros for over 15 years
          • Over 20 million auto parts shipped
          • Top brands at the best prices online
          • Exclusive Kits That Fit™ - complete repair solutions with no guesswork
          • Fast, reliable shipping from our U.S. warehouses

          Frequently Asked Questions

          What is the warranty on the ACDelco 84009371 Alternator?

          The ACDelco 84009371 comes with a limited warranty, ensuring your investment is protected against defects in material and workmanship.

          How do I know if my ACDelco 84009371 Alternator is failing?

          Common signs of a failing alternator include dimming headlights, electrical issues, and a warning light on the dashboard. If you experience these symptoms, consider checking or replacing your ACDelco 84009371.

          What DTCs are associated with alternator issues?

          If your alternator is malfunctioning, you might see DTCs such as P0562 (System Voltage Low) and P0615 (Generator Terminal Circuit). Make sure to diagnose and address these issues promptly.

          How can I ensure proper installation of the ACDelco 84009371?

          To ensure proper installation, consult your vehicle’s service manual and follow the manufacturer's guidelines. If you're uncertain, professional installation is recommended.

          Why should I purchase the ACDelco 84009371?

          Order ACDelco 84009371 today for a factory-correct replacement that restores safety and performance.

            • Newparts SKU
              4076956
            • Weight
              13 lbs
            • Dimensions (L x W x H)
              10.8604 x 8.0937 x 9.1525 in
            • Manufacturer Part #
              84009371
          • Brand
            ACDelco
          • Manufacturer
            ACDelco
          • MPN
            84009371
          • Part Type
            Alternator
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          2004CadillacSRXBase (4.6 V8 GAS)Engine: LH2, VIN: A, Notes: AMPS 150, 150 AMP GEN(KG4)
          2005CadillacSRXBase (4.6 V8 GAS)Engine: LH2, VIN: A, Notes: AMPS 150, 150 AMP GEN(KG4)
          2005CadillacSTSBase (4.6 V8 GAS)Engine: LH2, VIN: A, Notes: AMPS 150
          2006CadillacSTSBase (4.6 V8 GAS)Engine: LH2, VIN: A, Notes: AMPS 150
          2006CadillacSTSV (4.4 V8 GAS)VIN: D, Notes: AMPS 150
          2006CadillacSRXBase (4.6 V8 GAS)Engine: LH2, VIN: A, Notes: AMPS 150, 150 AMP GEN(KG4)
          2007CadillacSTSBase (4.6 V8 GAS)Engine: LH2, VIN: A, Notes: AMPS 150
          2007CadillacSTSV (4.4 V8 GAS)VIN: D, Notes: AMPS 150
          2007CadillacSRXBase (4.6 V8 GAS)Engine: LH2, VIN: A, Notes: AMPS 150, 150 AMP GEN(KG4)
          2008CadillacSRXBase (4.6 V8 GAS)Engine: LH2, VIN: A, Notes: AMPS 150, 150 AMP GEN(KG4)
          2008CadillacSTSBase (4.6 V8 GAS)Engine: LH2, VIN: A, Notes: AMPS 150
          2008CadillacSTSPlatinum (4.6 V8 GAS)Engine: LH2, VIN: A, Notes: AMPS 150
          2008CadillacSTSV (4.4 V8 GAS)VIN: D, Notes: AMPS 150
          2009CadillacSRXBase (4.6 V8 GAS)Engine: LH2, VIN: A, Notes: AMPS 150, 150 AMP GEN(KG4)
          2009CadillacSTSBase (4.6 V8 GAS)Engine: LH2, VIN: A, Notes: AMPS 150
          2009CadillacSTSPlatinum (4.6 V8 GAS)Engine: LH2, VIN: A, Notes: AMPS 150
          2009CadillacSTSV (4.4 V8 GAS)VIN: D, Notes: AMPS 150
          2010CadillacSTSBase (4.6 V8 GAS)Engine: LH2, VIN: A, Notes: 150 AMP GEN(KG4)
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          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.

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