2017-2024 Audi A4 Power Brake Booster and Master Cylinder (Used OEM)

It is a power brake booster and master cylinder for vehicles with a 3.0L engine and all-wheel drive.

Condition: Excellent (A)
Mileage: 25,000 miles

$224.95 View part →

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2013-2016 Audi A4 Power Brake Booster Assembly with Master Cylinder (Used OEM)

Partslink #: 540-59125

It includes the master cylinder and the fluid reservoir tank. This part is for vehicles without ceramic brakes and was made by Girling.

Condition: Excellent (A)
Mileage: 71,000 miles

$99.95 View part →

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2009-2012 Audi A4 Hybrid Power Brake Booster (Used OEM)

Partslink #: 540-50236

It fits vehicles with a 2.0L engine and a continuously variable transmission (CVT). This part is for 4-door models. It is made by ATE and is for hybrid vehicles.

Condition: Excellent (A)
Mileage: 178,600 miles

$149.95 View part →

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2013-2016 Audi A4 Power Brake Booster Assembly with Master Cylinder (Used OEM)

Partslink #: 540-59125

It fits 4-door vehicles with a 2.0L engine and a continuously variable transmission (CVT). It is made by Girling and is for vehicles without ceramic brakes.

Condition: Excellent (A)
Mileage: 137,800 miles

$159.95 View part →

Booster Type: Vacuum, Brake Pedal Rod Extension Included: No, Brake Service Grade: Regular, Contains Electronic Components: No, Diaphragm Diameter: 242.82, Diaphragm Type: Dual, Does it require SDS: No, FAA_A1: A Brake Booster Assists In Pushing The Master Cylinder Piston When The Brakes Are Applied. This Multiplies Pedal Force To Decrease Stopping Distances., FAA_A10: The Most Common Way To Identify The Brake Booster Is By The Vehicle Application. However, Most Brake Boosters Have A Pedal Rod Identification Number Stamped On The End Of The Rod. This Can Helpful In Identifying The Correct Replacement Brake Booster., FAA_A2: For Proper Functionality, A Brake Booster Will Need A Consistent Supply Of 18-21 Inches Of Vacuum., FAA_A3: With The Engine Off, Pump The Brake Pedal Until It Feels Firm And Hold. Then, Start The Engine And The Pedal Will Sink Slightly If The Booster Is Operating Properly., FAA_A4: Fuel And Oil Vapors Can Enter The Vehicle’s Pcv System. These Vapors Will Prematurely Deteriorate The Brake Booster’s Internal Diaphragm., FAA_A5: After Replacing A Brake Booster, It May Be Necessary To Adjust The Brake Light Switch. Some Vehicles Contain A One-time Use Brake Light Switch. In These Cases, The Brake Light Switch Will Need To Be Replaced., FAA_A6: No, Brake Boosters Are Application Specific. Most Will Have Different Master Cylinder And Firewall Mounting Spreads., FAA_A7: Brake Pedal Free Play Is A Measurement Of How Far The Brake Pedal Moves Before The Master Cylinder First Begins Engagement. Some Vehicles Will Require An Adjustment. Please Refer To Your Vehicle’s Service Manual., FAA_A8: This Is Due To A Failing Master Cylinder Piston Seal. This Will Result In Brake Fluid Entering And Contaminating The Brake Booster. The Master Cylinder And Brake Booster Will Need To Be Replaced., FAA_A9: A Common Cause Is A Restricted Vacuum Hose. If The Vacuum Line Is Free Flowing, There Could Be More Extensive Engine Damage Or Wear. Engine Vacuum Also Fluctuates Based On Altitude. Please Refer To The O.e. Specification For Your Vehicle., FAQ_Q1: What Does A Brake Booster Do?, FAQ_Q10: How Can I Identify My Brake Booster?, FAQ_Q2: How Much Vacuum Does A Brake Booster Need?, FAQ_Q3: How Can I Test My Brake Booster For Proper Functionality?, FAQ_Q4: What Causes Multiple Booster Failure?, FAQ_Q5: Why Do My Brake Lights Remain Illuminated After Installing My Replacement Brake Booster?, FAQ_Q6: Can I Use A Brake Booster From A Different Application?, FAQ_Q7: What Is Brake Pedal Free Play?, FAQ_Q8: Why Is Fluid Present Between My Master Cylinder And Brake Booster?, FAQ_Q9: Why Do I Have Less Than 18 Inches Of Vacuum Supplied To My Brake Booster?, Gasket Or Seal Included: No, Housing Diameter: 247.52, Is Item A Chemical: No, Is Or Contains A Battery: No, Is Or Contains A Bulb: No, Is Prop Sixty Five Affected: No, Is the item CARB affected: No, Master Cylinder Included: No, Master Cylinder Stud Thread Size: M18x1.5, Mounting Hardware Included: No, Neck Seal Included: Yes, Product Condition: Remanufactured

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