Audi A4 Master Cylinder (Brake System)

Replacement Parts


AutoZone Rewards℠

Join Today and Earn a $20 Reward When You Make 5 Purchases of $20 or More!

Tell Us More About Your Audi A4. View all models

AutoZone carries hundreds of thousands of parts and accessories.

Select your Year, Make, Model and Engine to find those that fit your vehicle.

Your Audi A4 provides you with the polished ride you always wanted, including a lavishly finished cabin and powerful handling capabilities. However, as with any vehicle, you must maintain your Audi's important inner workings to have it perform at full capacity, which means getting an A4 master cylinder replacement from AutoZone when it's time.

Show of 5  Results
  •  | Page 1 of 1 |  
  • Part Number: NM55281
  • Application: With Girling or TRW unit
  • Notes: Without reservoir
  • Part Number: NM52777
  • Notes: Without reservoir
  • Part Number: M55281
  • Application: Cabriolet
    With Girling or TRW unit
  • Notes: Without reservoir
  • Part Number: M55280
  • Notes: Without reservoir
  • Part Number: M52777
  • Notes: Without reservoir
  •  | Page 1 of 1 |  

The Audi A4 master cylinder's function is to distribute hydraulic brake pressure from your brake pedal to the appropriate brake calipers. This means that problems with the brake master cylinder for Audi A4 often are indicated through the way that the brake pedal is functioning. Spongy brake pedals or pedals that stick and then slowly sink are indications of a defective cylinder. Free battery charging and engine diagnostic testing with AutoZone helps weed out any other potential issues during any in-store visit. Plus, for all of your needs, AutoZone provides the right products at the right prices, so you're sure to score the best deals in the industry when you shop with us.

Other Customers Also Viewed



Buy online and return core parts to the store to be refunded the price.
Core Parts Policy


On Orders $75 or Greater
and free shipping to APO, FPO, DPO addresses.
Get More Details


Buy Online, Return
Get More Details


Save time by buying online and picking up items in store.
Learn More

Payment Methods: