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          Genuine VW/Audi 8W0615121H - Disc Brake Pad Wear Sensor (Front Left)

          MPN: 8W0615121H
          The Genuine VW/Audi 8W0615121H Disc Brake Pad Wear Sensor monitors brake pad thickness, ensuring timely replacements for safe driving. Designed for select Audi models.
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $72.10
          In stock

          Genuine VW/Audi Audi Disc Brake Pad Wear Sensor - Front 8W0615121H - For Audi Vehicles

          Manufacturer Part Number: 8W0615121H

          Product Overview

          The Genuine VW/Audi Audi Disc Brake Pad Wear Sensor is an essential component for maintaining the safety and performance of your Audi vehicle. Designed specifically for use in high-end models, this sensor alerts drivers when the brake pads are nearing the end of their lifecycle, ensuring timely replacement and preventing potential brake failure. Engineered to OEM standards, this premium-grade sensor features a simple loop of wire that completes an electrical circuit while the brake pads are within spec. Once the pads wear down to the minimum thickness, the loop breaks, illuminating a warning light on your dashboard to alert you that it's time for a replacement.

          Vehicle Compatibility

          This part fits some of the popular models below. For Fitment Confidence, please use the vehicle selector tool above to verify exact compatibility.

          • Audi A4 allroad, 2.0L4, 2020-2022
          • Audi A4 Quattro, 2.0L4, 2020-2022
          • Audi A5 Quattro, 2.0L4, 2020-2022
          • Audi A5 Sportback, 2.0L4, 2020-2022
          • Audi A6 Quattro, 2.0L4, 2020-2022

          Why Shop at eEuroparts.com?

          Since 2000, eEuroparts.com has been a trusted destination for European car owners looking for reliable parts at great prices. Here's why customers choose us:

          • Proven Expertise: Over 25 years of experience with European vehicles means we know your car inside and out.
          • 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 this part do?

          The Audi Disc Brake Pad Wear Sensor is designed to monitor the condition of your brake pads. It alerts the driver when the pads have worn down to a critical thickness, ensuring that replacements are made in a timely manner to maintain optimal braking performance.

          What vehicles is this part compatible with?

          This part is compatible with several Audi models, including the A4 allroad, A4 Quattro, A5 Quattro, A5 Sportback, and A6 Quattro from 2020 to 2022. For precise compatibility, please use our vehicle selector tool.

          What are common signs this part may need replacement?

          Key signs that the brake pad wear sensor may need replacement include:

          • Illuminated warning light on the dashboard.
          • Unusual noises when braking, such as squeaking or grinding.
          • Decreased braking performance.
            • eEuroparts SKU
              1420235
            • Weight
              0.88 lbs
            • Dimensions (L x W x H)
              5.35 x 2.55 x 6.33 in
            • Manufacturer Part #
              8W0615121H
          • Brand
            Genuine VW/Audi
          • Manufacturer
            Genuine VW/Audi
          • MPN
            8W0615121H
          • Part Type
            Disc Brake Pad Wear Sensor
          • Position
            Front Left
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          2021AudiS5 SportbackPremium (3.0 V6 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2021AudiS5 SportbackPrestige (3.0 V6 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2021AudiA4 QuattroPrestige (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2021AudiA4 QuattroPremium (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2021AudiA4 allroadPremium Plus (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2021AudiA4 allroadPrestige (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2021AudiA6 QuattroPrestige (3.0 V6 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2021AudiA6 QuattroPremium (3.0 V6 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2021AudiA6 QuattroPremium (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2021AudiA5 SportbackPremium Plus (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2021AudiA5 SportbackPremium (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2021AudiA5 SportbackPrestige (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2021AudiA5 QuattroPremium (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2021AudiA5 QuattroPremium Plus (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2021AudiA5 QuattroPrestige (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2018AudiA4 allroadPremium Plus (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2018AudiA4 allroadPremium (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2018AudiA4 allroadPrestige (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2018AudiSQ5Prestige (3.0 V6 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2018AudiA4 QuattroPremium Plus (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2018AudiQ5Premium (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2018AudiQ5Premium Plus (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2018AudiQ5Prestige (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2018AudiA5 QuattroPremium Plus (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2018AudiA5 QuattroPremium (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2018AudiA5 QuattroPrestige (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2018AudiA4Premium (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2018AudiA4Prestige (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2018AudiA5 SportbackPremium Plus (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2018AudiS5 SportbackPrestige (3.0 V6 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2018AudiRS5Base (2.9 V6 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2022AudiA4 QuattroPremium Plus (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2022AudiA4 QuattroPremium (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2022AudiA4 allroadPremium Plus (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2022AudiA4 allroadPremium (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2022AudiA5 QuattroPremium Plus (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2022AudiA5 QuattroPrestige (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2022AudiA5 QuattroPremium (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2022AudiA6 QuattroPrestige (3.0 V6 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2022AudiA6 QuattroPremium Plus (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2022AudiA6 QuattroPremium Plus (3.0 V6 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2022AudiS5 SportbackPremium Plus (3.0 V6 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2022AudiS5 SportbackPremium (3.0 V6 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2022AudiA5 SportbackPremium Plus (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2022AudiA5 SportbackPremium (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiA4Premium Plus (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiA4Premium (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiA6 QuattroPremium Plus (3.0 V6 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiA6 QuattroPremium Plus (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiA6 QuattroPremium (3.0 V6 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiA6 QuattroPremium (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiA4 QuattroPremium (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiA4 QuattroPrestige (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiA4 QuattroPremium Plus (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiS5 SportbackPremium (3.0 V6 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiS5 SportbackPremium Plus (3.0 V6 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiA5 QuattroPremium (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiA5 QuattroPrestige (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiA5 SportbackPrestige (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiA5 SportbackPremium Plus (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiA4 allroadPremium Plus (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiA4 allroadPremium (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2020AudiA4 allroadPrestige (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiA4 allroadPremium (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiA4 allroadPrestige (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiRS5 SportbackBase (2.9 V6 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiA4 QuattroUltra sport (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiA4 QuattroPremium (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiA4 QuattroPremium Plus (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiA4Premium Plus (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiA4Prestige (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiA4Premium (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiA4Titanium (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiS5 SportbackPrestige (3.0 V6 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiA6 QuattroPremium (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiA6 QuattroPremium (3.0 V6 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiA6 QuattroPrestige (3.0 V6 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiA6 QuattroPremium Plus (3.0 V6 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiA6 QuattroPremium Plus (2.0 L4 GAS)
          2019AudiA5 SportbackPremium (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiA5 SportbackPremium Plus (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiA5 SportbackPrestige (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiA5 QuattroPremium Plus (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2019AudiRS5Base (2.9 V6 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2023AudiA5 QuattroPremium Plus (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2023AudiA5 QuattroPremium (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2023AudiS5 SportbackPrestige (3.0 V6 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2023AudiS5 SportbackPremium Plus (3.0 V6 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2023AudiA5 SportbackPrestige (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2023AudiA5 SportbackPremium (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2023AudiA4 QuattroPremium (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2023AudiA4 QuattroPremium Plus (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2023AudiA4 allroadPrestige (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2023AudiA4 allroadPremium (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2023AudiA4 allroadPremium Plus (2.0 L4 MHEV)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2017AudiA4 QuattroPremium (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2017AudiA4 QuattroPremium Plus (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2017AudiA4 allroadPrestige (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2017AudiA4 allroadPremium Plus (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          2017AudiA4Premium Plus (2.0 L4 GAS)Notes: Front Driver Side Left - A6 Quattro 338x30mm - A4 338x22 mm
          There are more vehicles this part is compatible with. Check if it fits your vehicle.
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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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