Used OEM Audi A4 Brake Master Cylinder

3 used OEM Brake Master Cylinder in stock for Audi A4, from $58 to $109. Every part was pulled in-house from donor cars scanned with VCDS diagnostic tools — real photos of the actual part, tested where we can, 30-day returns.

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Brakes / ABS (3)

Master Cylinder (3)

Used (3)

ABS / Speed Sensor (25) ABS Computer / Module (12) ABS Pump (11) ABS Pump Mount / Bracket (4) AC Compressor Mount Bracket (6) AC Compressor Screw / Bolt (14) AC Compressor and Clutch (6) AC Condenser (12) AC Evaporator (2) AC Expansion Valve (3) AC Hoses / Lines and Fittings (23) AC Pressure Switch / Sensor (6) AC Receiver / Drier (2) Air / Coil Spring (27) Air Quality Sensor (7) AirBag Computer / Module (18) AirBag Crash / Impact Sensor (15) Airbag Warning Light / Switch (4) Airbag Wire / Wiring Harness (14) Alarm Horn / Siren (13) Alarm Switch (3) Alternator / Generator (6) Alternator / Starter Wiring Harness (7) Alternator Bolt / Nut / Fastener (9) Alternator Mount Bracket (6) Ambient Light / Sun Sensor (6) Amp / Amplifier (12) Antenna Booster (14) Armrest / Arm Rest (42) Ashtray / Ash Tray (10) Audio Noise Suppressor / Capacitor (2) Axle / CV Shaft (11) Axle / CV Shaft Shield (10) BCM / Body Control Modules / Computers (20) Battery Air Duct / Tube (2) Battery Cable (21) Battery Control Module / Computer (6) Battery Cover / Box (10) Battery Terminal / Junction Box (13) Battery Tray / Hold Down / Strap (6) Belly Pan / Splash Shield (3) Blank / Dummy Switch (8) Blower Motor (8) Blower Motor Resistor (7) Body Trim Bolt / Screw Cap / Cover (10) Body Wire / Wiring Harness (6) Boost Control Valve / N75 / Diverter (5) Bowden Cable (15) Brake / ABS Pressure Sensor (1) Brake / Clutch Switch (11) Brake Booster (7) Brake Booster Pressure Sensor (2) Brake Caliper (30) Brake Caliper / Carrier Bolts / Fasteners (11) Brake Caliper Carrier / Mount Bracket (22) Brake Dust / Splash Shield (20) Brake Fluid Reservoir / Tank (10) Brake Hose / Line (11) Brake Master Cylinder (3) Brake Pad / Shoe (1) Brake Pedal (12) Brake Relay (1) Brake Vacuum Line / Hose (12) Brake Vacuum Pump (20) Bumper / Hood Emblem / Badge (2) Bumper Bolts (2) Bumper Grille (4) Bumper Mount Bracket (27) Bumper Reinforcement Bar / Bracket (9) Bumper Shock (9) Bumper Trim (3) Bumper Valance (6) CD / DVD Changer (8) CV Axle Flange Bolt (4) Cabin Air Filter Housing (10) Cam Shaft / Camshaft (21) Cam Shaft Bearing Cap (7) Camera Control Module (5) Camshaft Adjustment Solenoid / Gear (27) Camshaft Pulley / Gear (2) Camshaft Sensor (13) Cargo / Trunk Light (3) Cargo Tie Down Hooks (10) Center Console (7) Center Console Insert (10) Center Console Mount Bracket (5) Center Console Trim (46) Center Door Trim / Molding (4) Charcoal Fuel Vapor Canister (7) Chassis Vent (4) Child Restraint / Hook Cover / Cap (10) Cigarette Lighter (10) Climate / Temp Control Unit (20) Climate Air Temp Sensor (10) Climate Air Vent / Duct (34) Climate Control Mount Bracket (2) Climate Control Wire / Wiring Harness (12) Clock Spring (7) Clutch Line (1) Clutch Pedal (6) Coat Hanger / Hook (1) Coil Spring Mount / Bushing (11) Comfort Control Module / Computer / CCM (16) Comfort Control Module Wire / Wiring Harness (2) Compact Spare Wheel / Tire (5) Computer Housing / Box (1) Convertible Top Hydraulic Lift Cylinder / Strut (1) Convertible Top Latch (2) Convertible Top Stowage (4) Convertible Top Switch (2) Coolant Flange (5) Coolant Hose / Pipe / Line (79) Coolant Reservoir / Tank (10) Coolant Temp Sensor / Thermal Switch (10) Cooling Fan Misc (1) Cowl / Firewall Cover (7) Crankcase / PCV Vent Valve (12) Crankshaft (6) Crankshaft Bolt (5) Crankshaft Pulley / Harmonic Balancer (11) Crankshaft Sensor (8) Crankshaft Shim (1) Cruise Control Module / Computer (1) Cup Holder (17) Cylinder Head Bolt (4) Dash AirBag (2) Dash Bracket / Mount (5) Dash Trim (61) Dash Wire / Wiring Harness (21) Dead Pedal / Foot Rest (5) Deck Lid / Trunk / Hatch (1) Defrost Switch (1) Diagnostic / CAN Bus / Gateway Computer / Module (15) Differential (7) Differential Control Module (3) Differential Mount Bracket (3) Dome / Map Light (17) Door / Hatch Sun Shade and Clips (2) Door Brake / Check Rod / Hinge (14) Door Contact Sensor (1) Door Control / Door Light Unit / Module (34) Door Frame (1) Door Glass (14) Door Latch (2) Door Light (32) Door Lock Actuator (32) Door Mount / Bracket (4) Door Panel (44) Door Panel Storage Area (2) Door Shell / Skin (1) Door Sill / Scuff Panel (12) Door Trim (145) Door Weather Stripping / Seal (32) Door Wire / Wiring Harness (48) Drive / Serpentine Belt (1) Drive Belt Tensioner (4) Drive Select Switch (5) Driveshaft / Propeller Shaft (3) ECO Start / Stop Switch (1) ECU / Engine Control Module Housing / Cover (7) EGR Valve / Hose / Line (16) ESP / DTC / Traction Control Switch (12) Electric Cooling Fan (18) Electric Cooling Fan Module / Relay (3) Electric Fan Assembly (4) Electric Vehicle Battery (2) Emergency Call Button / SOS Switch (2) Engine / Motor Mount (11) Engine / Motor Mount Bracket (45) Engine Air Filter Box (13) Engine Air Intake Duct (16) Engine Balancer Shaft (10) Engine Bolt / Nut / Fastener (51) Engine Control Module / ECM / ECU / DME (10) Engine Cooler Pipe / Line (3) Engine Cylinder Head and Parts (16) Engine Intake Air Temp Sensor (5) Engine Oil Cap (19) Engine Oil Cooler (17) Engine Oil Dipstick (12) Engine Oil Filter (3) Engine Oil Filter Housing (11) Engine Oil Level Sensor (12) Engine Oil Pan (18) Engine Oil Pump (18) Engine Plastic Cover (10) Engine Sealing Plate / Cover (12) Engine Short Block (5) Engine Start / Stop Switch (3) Engine Timing / Cam Solenoid (7) Engine Valve / Cylinder Head Cover (11) Engine Wire / Wiring Harness (21) Evap Hoses / Lines (4) Exhaust Hardware / Clamp (8) Exhaust Manifold (10) Exhaust Mount Bracket / Hanger (10) Exhaust Pipe (4) Exterior A Pillar Trim / Cover (1) Exterior B Pillar Trim / Cover (8) Exterior Bolt / Nut / Fastener (12) Exterior C Pillar Trim / Cover (2) Exterior Door / Window Trim (21) Exterior Door Handle (47) Fender (2) Fender Emblem / Badge (1) Fender Liner (8) Fender Mount / Bracket (17) First Aid Kit (5) Flexplate (10) Floor Mats and Carpet (7) Flywheel (6) Flywheel / Flexplate Bolt (8) Fog Light / Lamp (8) Fog Light Bulb (1) Fog Light Switch (12) Frame Brace / Support Bracket (4) Front Bumper Cover (2) Front Seat (47) Fuel / Gas Cap (8) Fuel Filter (1) Fuel Gauge Level Sensor / Sending Unit (1) Fuel Injector (25) Fuel Line (21) Fuel Pressure Sensor (13) Fuel Pump (10) Fuel Pump Delivery Computer / Module (10) Fuel Pump Relay (2) Fuel Rail (18) Fuse / Relay Box (31) Fuse Box Cover (17) Gas / Fuel Door Lock Actuator (8) Gas / Fuel Filler Door (7) Gas Pedal / Accelerator Module (11) Glove Box (18) Glove Box Strut / Actuator (1) Glove Box Switch (1) Grab Handle (25) HVAC Box Parts and Servos (10) Hatch Lift Pump / Motor Module (3) Hazard Switch (4) Head / Heads Up Display / HUD (2) Headlight / Head Lamp / Light (13) Headlight / Suspension Leveling Sensor (9) Headlight Ballast / Igniter (7) Headlight Bulb (4) Headlight Bulb Cover / Cap (7) Headlight Bulb Holder / Socket (1) Headlight Control Module / Computer (13) Headlight Mount Bracket (3) Headlight Switch (20) Headlight Trim (1) Headlight Washer Cap / Cover (2) Headlight Washer Pump (4) Headliner / Roof Trim (10) Headrest (33) Heat Shield (13) Heated Seat Switch (2) Heater Bypass Valve (3) Heater Core (3) Heater Core Hose (3) High Pressure Fuel Pump / HPFP (8) Homelink / Garage Door Module (13) Hood Hinge (9) Hood Insulation Blanket (5) Hood Latch Release Cable (4) Hood Latch Release Lever / Switch (7) Hood Shock / Strut (4) Hood Stop / Adjustment Bumper (4) Hood Weather Stripping / Seal (7) Horn (14) Humidity Sensor (3) Idler Pulley (2) Ignition Coil / Pack (27) Ignition Control Module / Amplifier / ICM (1) Ignition Locking Cable (1) Ignition Switch (8) Ignition Switch w/ Key / Cylinder (7) Illumination / Dimmer Switch (1) Instrument Cluster / Speedometer (20) Instrument Cluster Trim (2) Intake Manifold and Parts (27) Interior Bolt / Screw Cap / Cover (13) Interior Door Handle (22) Interior Fasteners / Clips (6) Interior Light (40) Interior Parking Brake Handle (5) Intermittent Wiper Control Module / Relay (1) Jack (7) Kessy / Keyless Entry Antenna (8) Key / Key Fob (3) Knee AirBag (3) Knee Panel (4) Knock Sensor (9) LCD Screen / Info Display (18) Lane / Park Assist Camera (7) Lane Change Assist Module / Computer (16) Lane Change Assist Switch (1) Leak Detection Pump / LDP (10) License Plate Light (7) License Plate Mount / Bracket (3) Light / Headlight Wire / Wiring Harness (3) Light / Lamp Relay (6) Lock / Unlock Switch (17) Lower Control Arm (15) Lower Door Molding (1) Lower Hood Latch (8) Lower Pillar (14) Lug Nut Covers (7) Lug Nuts / Bolts (4) Luggage Partition Gate / Net (2) MAF / Mass Air Flow Sensor / Meter (5) MAP / Intake Manifold Pressure Sensor (11) MMI Center Control Unit (25) MMI Control Module / Computer (33) Mechanical Fan Blade (1) Mechanical Fan Clutch (1) Microphone (1) Mirror Switch (11) Misc Connector / Plug (68) Motion Detector / Sensor (2) Mud Flap / Spoiler (4) Multifunction Relay (16) Music Interface Cable (6) Navigation / NAV Unit (6) Navigation Wire / Wiring Harness (8) Oil Pressure Sensor (23) Oil Sump Windage Tray (7) Onboard Power Supply Control Module / Unit (16) Other / Misc Wire / Wiring Harness (144) Other Relay (13) Owners Manual (3) Oxygen / O2 Sensor (32) Park Assist Sensor (14) Park Assist Switch (3) Parking Aid / Assist Control Module / Computer (3) Parking Brake Cable (4) Parking Brake Computer / Module (11) Parking Brake Lever (1) Parking Brake Mount Bracket (1) Parking Brake Switch (5) Pedal Cluster (4) Piston / Connecting Rod (15) Power Outlet (14) Power Steering Gear / Rack (7) Power Steering Hose / Line / Pipe (10) Power Steering Pump (1) Power Steering Pump Bracket (3) Power Steering Pump Pulley (1) Power Steering Reservoir (7) Power Steering Screw / Bolt (1) Power Steering Wiring Harness (2) Pressure Plate / Clutch (4) Purge Valve (7) Quarter Panel (1) Quarter Panel Mount / Bracket (1) Radiator (8) Radiator / Core Support (1) Radiator / Core Support Mount Bracket (13) Radiator Air Guide / Duct (2) Radiator Coolant Hose (11) Radiator Holding Clip / Pin / Bracket (14) Radio / Stereo (9) Radio / Stereo / Amplifier Wire / Wiring Harness (21) Radio Tuner Receiver Module / Head Unit (1) Rain Sensor (5) Rain Tray / Water Deflector (10) Rear Bumper Cover (1) Rear Seat (27) Rear Seat Panel / Net (10) Rear View Mirror (11) Rocker Arm (1) Roof Antenna / Shark Fin (7) Roof Weather Stripping / Seal (4) Rubber Jounce Bumper (1) Safety / Warning / Road Triangle (1) Satellite Radio Module / Computer (11) Seat / Memory Control Module / Computer (5) Seat Adjustment Handle / Lever (4) Seat Belts (34) Seat Buckles / Receivers (13) Seat Cooling Fan (4) Seat Fasteners / Clips (3) Seat Light (3) Seat Lock / Latch (2) Seat Lumbar Assembly (3) Seat Memory Switch (2) Seat Motor (44) Seat Mount / Bracket (3) Seat Occupant Detection Module / Sensor (8) Seat Rail / Frame (9) Seat Sets (1) Seat Storage Drawer (4) Seat Switch (25) Seat Trim (53) Seat Ventilation Module / Computer (2) Seat Wire / Wiring Harness (16) Secondary Air Pump (8) Secondary Air Pump Lines / Hoses (1) Shift Cable / Linkage (7) Shifter Assembly (12) Shifter Display Unit (8) Shifter Knob / Boot (8) Side Marker Lights / Reflectors (4) Side Skirt / Rocker Panel (2) Side View Mirror (41) Ski Bag (3) Sound Absorber (8) Sound Generator (1) Spare Tire Air Compressor (1) Spare Tire Tie Down (6) Spark Plug Wires (1) Speaker / Subwoofer (52) Speaker Grille / Cover (49) Spindle / Knuckle (30) Stabilizer / Sway / Track Bar (10) Starter (12) Starter Relay (1) Steering Column (9) Steering Column Adjustment Lever / Switch (2) Steering Column Control Module (3) Steering Column Trim (15) Steering Tie Rod (17) Steering Wheel (37) Steering Wheel AirBag (15) Steering Wheel Relay / Module (1) Steering Wheel Switch / Button (48) Stone Guard (3) Storage Tray / Card / Coin Holder (16) Strut / Shock Absorber (22) Strut / Shock Mount / Bushing (28) Strut Tower Brace (5) Sub Frame Mount / Bracket (2) SubFrame / Sub Frame (2) Suction Pump (2) Sun Roof / Glass (7) Sun Roof Shade / Sunshade (2) Sun Roof Switch (9) Sun Shade Switch (2) Sun Visor and Components (23) Sunroof / Sun Roof Control Module (2) Sunroof / Sun Roof Motor (7) Suspension Bolt / Nut / Fastener (11) Suspension Computer / Control Module / Air Ride (1) Sway / Stabilizer Bar End Link (11) Tail Light / Lamp (19) Tail Light Bulb (3) Tail Light Wire / Wiring Harness (15) Telephone / Telematics Control Module / Computer (16) Thermostat (6) Thermostat Housing (9) Third Brake Light (2) Throttle Body (13) Tie Rod Boot / Bellow (8) Timing Belt / Chain (1) Timing Belt / Chain Covers (21) Timing Belt / Chain Tensioner (18) Timing Belt Idler (1) Timing Chain Guide / Rail (14) Timing Gear / Pulley (20) Tire Pressure / TPMS Sensor (1) Tire Pressure Monitoring Computer / Module (2) Tools (16) Torque Converter (5) Tow / Towing Hook (2) Tow / Trailer Hitch (1) Tow Hook Cover / Cap (2) Transfer Case / Box (5) Transfer Case / Box Motor (1) Transfer Case Control Module (1) Transmission / Clutch Master Cylinder (1) Transmission / Clutch Slave Cylinder (1) Transmission Axle Flange (5) Transmission Case / Housing (1) Transmission Control Module / TCU / TCM (2) Transmission Cooler Line / Pipe (15) Transmission Gear Position Switch (1) Transmission Gears and Cylinders (1) Transmission Mount (12) Transmission Mount Bracket (29) Transmission Oil Cooler (3) Transmission Oil Filter (1) Transmission Oil Pan (9) Transmission Oil Pump (4) Transmission Screw / Bolt / Fastener (4) Transmission Tail Shaft (3) Transmission Wire / Wiring Harness (10) Trunk / Hatch Access Panel (6) Trunk / Hatch Cargo Cover (1) Trunk / Hatch Emblem / Badge (7) Trunk / Hatch Hinge (8) Trunk / Hatch Lift Motor / Pump (1) Trunk / Hatch Module (4) Trunk / Hatch Shock / Strut / Spring (5) Trunk / Hatch Spoiler (1) Trunk / Hatch Stop / Adjustment (17) Trunk / Hatch Switch (6) Trunk / Hatch Trim (12) Trunk Latch (14) Trunk Latch Cover (7) Trunk Latch Release Cable (2) Trunk Lock Actuator (4) Trunk Mat / Carpet Spare Cover (5) Trunk Release Switch / Handle (18) Trunk Weather Stripping / Seal (1) Turbo / Supercharger Intercooler (9) Turbo Mount / Bracket (4) Turbocharger (18) Turbocharger Coolant Line (7) Turbocharger Intercooler Hose (15) Turbocharger Oil Line (12) Turbocharger Wastegate / Actuator (7) Turbocharger Wastegate / Vacuum Lines (1) Turn Signal Light (1) USB Port / Connector (3) Underbody / Under Panel Mount Fastener (4) Underbody Panels / Skid Plate (3) Upper Control Arm (24) Upper Hood Latch (2) Upper Pillar (26) VSS / Transmission Speed Sensor (1) Vacuum / Crankcase Breather Hose / Line (42) Vacuum Solenoid Valve (12) Vacuum Tank / Reservoir (2) Valet Switch (4) Valley Pan / Cover (2) Valve Body / Mechatronic (14) Voltage Stabilizer Module (5) Washer Hose (14) Water / Coolant Pump (44) Water Drain Hose / Line (3) Water Pump Mount Bracket (5) Wheel Bearing (22) Wheel Center Caps (9) Wheels / Rims (2) Window Motor (19) Window Regulator (18) Window Switch (21) Windshield Sprayer / Nozzle (31) Windshield Trim (3) Windshield Washer Pump (8) Windshield Washer Tank / Reservoir (8) Windshield Wiper Screw / Nut Cap (5) Wiper / Turn Signal / Cruise Stalks / Switch (17) Wiper Arm (11) Wiper Motor (9) Wiper Transmission (9) Wiring Organizer / Mount Bracket (8) YAW / ESP Sensor (5)

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