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          LuK LMC104 - Clutch Master Cylinder

          MPN: LMC104
          The LuK LMC104 Clutch Master Cylinder ensures smooth clutch operation in your Audi. Engineered for reliability and designed for straightforward installation.
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $78.95
          In stock

          Product Overview

          The LuK Clutch Master Cylinder part number LMC104 is a premium quality replacement part designed specifically for Audi vehicles. This clutch master cylinder plays a crucial role in the hydraulic clutch system, converting pedal force into hydraulic pressure for smooth clutch engagement. Manufactured to meet or exceed OEM specifications, the LMC104 ensures reliability, durability, and fitment accuracy. It delivers exceptional performance, making it an ideal choice for Audi enthusiasts and technicians alike. Choose LuK LMC104 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This LuK LMC104 is equivalent to or replaces the following part numbers: 123456, 654321.

          Vehicle Compatibility

          • Audi 90 2.8 V6 (1993–1995)
          • Audi 90 Quattro 2.8 V6 (1993–1995)
          • Audi 80 2.3 L5 (1990–1992)
          • Audi 80 Quattro 2.3 L5 (1990–1992)
          • Audi Coupe Quattro 2.3 L5 (1991)
          • Audi 90 2.3 L5 (1990–1991)

          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 Fitâ„¢ - 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 LuK LMC104 Clutch Master Cylinder do?

          The clutch master cylinder is a vital component of the hydraulic clutch system in your vehicle. It converts the force applied to the clutch pedal into hydraulic pressure, allowing the clutch to engage and disengage smoothly.

          How do I know if my Clutch Master Cylinder needs replacement?

          Common symptoms indicating that the clutch master cylinder may need replacement include difficulty in engaging or disengaging the clutch, low clutch fluid levels, fluid leaks near the clutch pedal, or a spongy clutch pedal feel.

          Can I install the LuK LMC104 myself?

          Yes, the LuK LMC104 is designed for easy installation, making it suitable for DIY enthusiasts. However, ensure you follow the manufacturer’s guidelines and take necessary precautions during the installation process.

          What are the symptoms of a faulty Clutch Master Cylinder?

          Symptoms of a faulty clutch master cylinder include a spongy or soft clutch pedal, difficulty shifting gears, and fluid leaks near or under the clutch pedal area. Addressing these issues promptly can prevent further damage to your vehicle's transmission system.

          Why should I choose LuK for my Clutch Master Cylinder needs?

          LuK is a trusted brand known for high-quality automotive components. Their parts, like the LuK LMC104, ensure reliable performance and fitment. Order LuK LMC104 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
              178892
            • Weight
              0.7981 lbs
            • Dimensions (L x W x H)
              8.8583 x 4.1339 x 4.2913 in
            • Barcode
              00670774007125
            • Manufacturer Part #
              LMC104
          • Brand
            LuK
          • Manufacturer
            LuK
          • MPN
            LMC104
          • Part Type
            Clutch Master Cylinder
          • OE Part Numbers
            893 721 401 B, 893721401B, 893 721 401 D, 893721401D
          • Cross Reference Numbers
            6284 001 002, 6284001002, 6284 998 901, 6284998901, M0204, SH5405, 6284 001 001, 6284001001, 5411030, 5110107100
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          1990Audi80 QuattroBase (2.3 L5 GAS)
          1990Audi90Base (2.3 L5 GAS)
          1990Audi90 Quattro20v (2.3 L5 GAS)
          1990AudiCoupe Quattro20v (2.3 L5 GAS)
          1990Audi80Base (2.0 L4 GAS)
          1991Audi80Base (2.3 L5 GAS)
          1991Audi80 QuattroBase (2.3 L5 GAS)
          1991Audi90Base (2.3 L5 GAS)
          1991AudiCoupe Quattro20v (2.3 L5 GAS)
          1991Audi90 Quattro20v (2.3 L5 GAS)
          1992Audi80Base (2.3 L5 GAS)
          1992Audi80 QuattroBase (2.3 L5 GAS)
          1993Audi90CS (2.8 V6 GAS)
          1993Audi90S (2.8 V6 GAS)
          1993Audi90 QuattroCS (2.8 V6 GAS)
          1994Audi90CS (2.8 V6 GAS)Engine: AAH, Engine: AFC
          1994Audi90S (2.8 V6 GAS)Engine: AAH, Engine: AFC
          1994Audi90 QuattroCS (2.8 V6 GAS)
          1995Audi90Base (2.8 V6 GAS)Engine: AAH, Engine: AFC
          1995Audi90Sport (2.8 V6 GAS)Engine: AAH, Engine: AFC
          1995Audi90 QuattroBase (2.8 V6 GAS)
          1995Audi90 QuattroSport (2.8 V6 GAS)
          1988Audi80Base (2.0 L4 GAS)
          1988Audi80 QuattroBase (2.3 L5 GAS)
          1988Audi90Base (2.0 L4 GAS)
          1988Audi90Base (2.3 L5 GAS)
          1988Audi90 QuattroBase (2.3 L5 GAS)
          1989Audi80Base (2.0 L4 GAS)
          1989Audi80 QuattroBase (2.3 L5 GAS)
          1989Audi90Base (2.3 L5 GAS)
          1989Audi90 QuattroBase (2.3 L5 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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