How to remove and install the Clutch Slave Cylinder on Audi A4?

Firstly, put the shift lever in Neutral and remove the key in the ignition switch to remove the clutch release cylinder. Activate the parking brake and block the rear wheels to stop rolling, and then lift the front part of the vehicle and place it on jackstands. Then take out the lower splash shield. In other V6 models, one might need to remove the front of the exhaust system and to remove the left side driveaxle off of the flange shaft, to clear the driveaxle out of the way in order to reach the clutch release cylinder. Attach the lever to the shaft of a shift and break apart the shift lever and mounting nut. Disconnect the pressure line with the release cylinder by removing the clip, and be ready to spill some fluid, and seal the line so as to keep the loss and contamination to a minimum. Use the removal bolt of the release cylinder and yank the cylinder out of the transaxle. Installation: To install it, lubricate the end of the pushrod with copper grease, and add lithium-base grease to the section of the boot that fits into the bore of the transaxle. Attach the release cylinder to the release lever directly into the bore to be certain that the pushrod is seated properly in the release lever pocket. Insert the clip, attach the pressure line to the cylinder and make sure that it is firmly attached. Install the hydraulic line release cylinder mounting bolt, provided, and screw it as tight as needed. The rest of the installation is in the same sequence of removal, with some more steps involved, such as bleeding the system, ensuring that the brake fluid reservoir is full and filling it up, and cleaning any spilled brake fluid with water.

How to aid access to, and install, the Clutch Slave Cylinder in the transmission on Audi A6?

To provide access, unbolt the left drive axle from the transmission and move it out of the way. Take off transmission heat shield assembly. If necessary, unscrew the left transmission support bolts and take it off with the transmission mounting. Detach the bolt and extract the slave cylinder from the rear. To remove the pipe, use a screwdriver to lever out the retaining clip until it comes out with an audible 'click', allowing for the pipe to pull out. Before installation of the slave cylinder on the transmission housing, apply lithium grease on the area of the collar, and also apply copper grease on the tip of the push rod. Insert the clutch slave cylinder into the mount hole in the transmission housing; keep it in line with the direction of operation of the push rod and tighten the bolt. To attach the pipe to the slave cylinder, compress the retaining clip to the maximum distance inwards and push the pipe into the slave cylinder until an audible engagement is emitted. Reinstall the drive axle and heat shield, reattach the transmission support and transmission mount if modified, and bleed the clutch system.

Genuine Audi Clutch Slave Cylinder

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21 Clutch Slave Cylinders found

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Audi Slave Cylinder Part Number: 6Q0-721-261-E
$80.97 MSRP: $113.40
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Product Specifications
- Other Name: Cylinder
- Replaces: 6Q0-721-261-C
Fits the following Audi Models:
- 90 | 1995 | Base, Sport | 6 Cyl 2.8 L GAS
- 90 Quattro | 1995 | Base, Sport | 6 Cyl 2.8 L GAS
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Audi Slave Cylinder Part Number: 8K0-721-257-A
$179.69 MSRP: $251.67
You Save: $71.98 (29%)
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Product Specifications
- Other Name: Cylinder
- Replaces: 8K0-721-257-B, 8K0-721-257-C
Fits the following Audi Models:
- A4 | 2009-2013 | Base | 4 Cyl 2.0 L GAS
- A4 Quattro | 2009-2013 | Avant, Base | 4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS
- A5 | 2010-2013 | Cabriolet | 4 Cyl 2.0 L GAS
- A5 Quattro | 2008-2013 | Base, Cabriolet | 4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS
- S4 | 2010-2013 | Base | 6 Cyl 3.0 L GAS
- S5 | 2008-2013 | Base, Cabriolet | 6 Cyl 3.0 L GAS, 8 Cyl 4.2 L GAS
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Audi Slave Cylinder Part Number: 8E0-721-257-P
$185.64 MSRP: $259.99
You Save: $74.35 (29%)
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Product Specifications
- Other Name: Cylinder
- Replaces: 8E0-721-257-H, 8E0-721-257-K
Fits the following Audi Models:
- A4 | 2004-2007 | Base | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- A4 Quattro | 2004-2008 | Avant, Base | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
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Audi Master Cylinder Part Number: 4A1-721-401
$192.78 MSRP: $270.00
You Save: $77.22 (29%)
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Product Specifications
- Other Name: Cylinder
Fits the following Audi Models:
- 100 | 1989-1994 | Base, CS, E, S | 5 Cyl 2.3 L GAS, 6 Cyl 2.8 L GAS
- 100 Quattro | 1989-1994 | Base, CS | 5 Cyl 2.3 L GAS, 6 Cyl 2.8 L GAS
- A6 | 1995-1999 | Avant, Base | 6 Cyl 2.8 L GAS
- A6 Quattro | 1995-1999 | Avant, Base | 6 Cyl 2.8 L GAS
- S4 | 1993-1994 | Base | 5 Cyl 2.2 L GAS
- S6 | 1995 | Base | 5 Cyl 2.2 L GAS
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Audi Master Cylinder Part Number: 8D1-721-401-B
$217.77 MSRP: $305.00
You Save: $87.23 (29%)
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Product Specifications
- Other Name: Cylinder
Fits the following Audi Models:
- A4 | 1996-1999 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- A4 Quattro | 1996-1999 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
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Audi Master Cylinder Part Number: 8K1-721-401-H
$261.79 MSRP: $366.65
You Save: $104.86 (29%)
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Product Specifications
- Other Name: Cylinder
- Replaces: 8K1-721-401-E, 8K1-721-401-D, 8K1-721-401-G, 8K1-721-401, 8K1-721-401-A, 8K1-721-401-B
Fits the following Audi Models:
- A4 | 2009-2016 | Base, Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- A4 Quattro | 2009-2018 | Avant, Base, Premium, Premium Plus, Prestige | 4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS
- A5 | 2010-2014 | Cabriolet | 4 Cyl 2.0 L GAS
- A5 Quattro | 2008-2018 | Base, Cabriolet, Premium, Premium Plus, Prestige, Sport | 4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS
- A5 Sportback | 2018 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- S4 | 2010-2016 | Base, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
- S5 | 2008-2017 | Base, Cabriolet, Premium Plus, Prestige | 6 Cyl 3.0 L GAS, 8 Cyl 4.2 L GAS
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Audi Master Cylinder Part Number: 420-721-388
$372.47 MSRP: $521.67
You Save: $149.20 (29%)
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Product Specifications
- Other Name: Cylinder
Fits the following Audi Models:
- R8 | 2014-2015, 2008-2012 | Base, GT, GT Spyder, Plus, Spyder | 10 Cyl 5.2 L GAS, 8 Cyl 4.2 L GAS
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Audi Slave Cylinder Part Number: 8K0-721-257-E
$126.14 MSRP: $176.68
You Save: $50.54 (29%)
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Product Specifications
- Other Name: Cylinder
Fits the following Audi Models:
- A4 | 2016 | Premium, Premium Plus | 4 Cyl 2.0 L GAS
- A4 Quattro | 2016 | Premium, Premium Plus | 4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L GAS
- A5 | 2013-2014 | Cabriolet | 4 Cyl 2.0 L GAS
- A5 Quattro | 2013-2017 | Base, Cabriolet, Premium, Premium Plus, Prestige, Sport | 4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L GAS
- S4 | 2016 | Premium Plus, Prestige | 6 Cyl 3.0 L GAS
- S5 | 2013-2017 | Base, Cabriolet, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
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Audi Master Cylinder Part Number: 857-721-401-A
$133.24 MSRP: $186.62
You Save: $53.38 (29%)
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Product Specifications
- Other Name: Cylinder
Fits the following Audi Models:
- 4000 Quattro | 1984-1987 | CS, S | 5 Cyl 2.2 L GAS
- 5000 | 1984-1985 | S Turbo | 5 Cyl 2.2 L GAS
- Coupe | 1984-1987 | Base, GT | 5 Cyl 2.2 L GAS
- Quattro | 1984-1985 | Base | 5 Cyl 2.2 L GAS
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Audi Master Cylinder Part Number: 8E1-721-401-AJ
$149.93 MSRP: $209.98
You Save: $60.05 (29%)
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Product Specifications
- Other Name: Cylinder
- Replaces: 8E1-721-401-S, 8E1-721-401-L
Fits the following Audi Models:
- A4 | 2002-2007 | Base | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- A4 Quattro | 2002-2008 | Avant, Base | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- RS4 | 2007-2008 | Base, Cabriolet | 8 Cyl 4.2 L GAS
- S4 | 2004-2009 | Avant, Base, Cabriolet | 8 Cyl 4.2 L GAS
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Audi CYLINDER Part Number: 1J0-721-261-P
$163.99 MSRP: $229.67
You Save: $65.68 (29%)
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Product Specifications
- Other Name: Slave Cylinder
- Replaces: 1J0-721-261-D, 1J0-721-261-M, 1J0-721-261-N, 1J0-721-261-J, 1J0-721-261-L, 1J0-721-261-H
Fits the following Audi Models:
- TT | 2000-2006 | Base | 4 Cyl 1.8 L GAS
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Audi Master Cylinder Part Number: 1J1-721-388-G
$165.30 MSRP: $231.51
You Save: $66.21 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cylinder
- Replaces: 1J1-721-388-A, 1J1-721-388-E
Fits the following Audi Models:
- TT | 2000-2006 | Base | 4 Cyl 1.8 L GAS
- TT Quattro | 2000-2006 | ALMS Edition, Base, Special Edition | 4 Cyl 1.8 L GAS, 6 Cyl 3.2 L GAS
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Audi Slave Cylinder Part Number: 8E0-721-257-Q
$168.97 MSRP: $236.65
You Save: $67.68 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cylinder
- Replaces: 8E0-721-257-J, 8E0-721-257-L
Fits the following Audi Models:
- RS4 | 2007-2008 | Base, Cabriolet | 8 Cyl 4.2 L GAS
- S4 | 2006-2009 | Avant, Base, Cabriolet | 8 Cyl 4.2 L GAS
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Audi Slave Cylinder Part Number: 8E0-721-257-N
$169.17 MSRP: $236.93
You Save: $67.76 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cylinder
- Replaces: 8E0-721-257-E
Fits the following Audi Models:
- Allroad Quattro | 2005 | Base | 6 Cyl 2.7 L GAS, 8 Cyl 4.2 L GAS
- S4 | 2004-2005 | Avant, Base, Cabriolet | 8 Cyl 4.2 L GAS
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Audi Master Cylinder Part Number: 8E1-721-401-AL
$181.18 MSRP: $253.75
You Save: $72.57 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cylinder
- Replaces: 8E1-721-401-AF, 8E1-721-401-F
Fits the following Audi Models:
- A6 | 2000-2004 | Base | 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS
- A6 Quattro | 2000-2004 | Avant, Base | 6 Cyl 2.7 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS, 8 Cyl 4.2 L GAS
- Allroad Quattro | 2003-2005 | Base | 6 Cyl 2.7 L GAS, 8 Cyl 4.2 L GAS
- S6 | 2002-2003 | Avant | 8 Cyl 4.2 L GAS
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Audi Slave Cylinder Part Number: 4A0-721-261
$189.21 MSRP: $265.00
You Save: $75.79 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cylinder
Fits the following Audi Models:
- 100 | 1989-1994 | Base, CS, E, S | 5 Cyl 2.3 L GAS, 6 Cyl 2.8 L GAS
- 100 Quattro | 1989-1994 | Base, CS | 5 Cyl 2.3 L GAS, 6 Cyl 2.8 L GAS
- 200 | 1989-1991 | Base | 5 Cyl 2.2 L GAS
- 200 Quattro | 1989-1991 | 20v, 20v Avant, Avant, Base | 5 Cyl 2.2 L GAS
- 80 | 1988-1992 | Base | 4 Cyl 2.0 L GAS, 5 Cyl 2.3 L GAS
- 80 Quattro | 1988-1992 | Base | 5 Cyl 2.3 L GAS
- 90 | 1993-1994, 1988-1991 | Base, CS, S | 4 Cyl 2.0 L GAS, 5 Cyl 2.3 L GAS, 6 Cyl 2.8 L GAS
- 90 Quattro | 1993-1994, 1988-1991 | 20v, Base, CS | 5 Cyl 2.3 L GAS, 6 Cyl 2.8 L GAS
- Coupe Quattro | 1990-1991 | 20v | 5 Cyl 2.3 L GAS
- S4 | 1992-1994 | Base | 5 Cyl 2.2 L GAS
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Audi Master Cylinder Part Number: 4A0-721-401
$192.78 MSRP: $270.00
You Save: $77.22 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Cylinder
Fits the following Audi Models:
- S4 | 1992-1993 | Base | 5 Cyl 2.2 L GAS
- V8 Quattro | 1991 | Base | 8 Cyl 3.6 L GAS
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Audi Slave Cylinder Part Number: 8E0-721-257-M
$194.16 MSRP: $271.94
You Save: $77.78 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Cylinder
- Replaces: 8E0-721-257-F, 8E0-721-257-A, 8E0-721-257-B
Fits the following Audi Models:
- A4 | 1996-2003 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS
- A4 Quattro | 1996-2003 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS
- A6 | 1998-2004 | Base | 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS
- A6 Quattro | 1998-2004 | Avant, Base | 6 Cyl 2.7 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS, 8 Cyl 4.2 L GAS
- Allroad Quattro | 2001-2004 | Base | 6 Cyl 2.7 L GAS, 8 Cyl 4.2 L GAS
- S6 | 2002-2003 | Avant | 8 Cyl 4.2 L GAS
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Audi Master Cylinder Part Number: 8E1-721-401-AK
$195.15 MSRP: $273.31
You Save: $78.16 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cylinder
- Replaces: 8E1-721-401-G, 8E1-721-401-K, 8E1-721-401-AG, 8E1-721-401-C
Fits the following Audi Models:
- A4 | 2000-2001 | Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- A4 Quattro | 2000-2001 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- Allroad Quattro | 2001-2002 | Base | 6 Cyl 2.7 L GAS
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Audi Master Cylinder Part Number: 1K0-721-388-AF
$212.53 MSRP: $297.66
You Save: $85.13 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cylinder
- Replaces: 1K0-721-388-AC, 1K0-721-388-G, 1K0-721-388-L, 1K0-721-388-S, 1K0-721-388-AB
Fits the following Audi Models:
- A3 | 2006-2013 | Base, TDI | 4 Cyl 2.0 L DIESEL, 4 Cyl 2.0 L GAS
- A3 Quattro | 2006-2013 | Base | 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS
- TT | 2008-2009 | Base | 4 Cyl 2.0 L GAS
- TT Quattro | 2012-2013, 2008-2009 | Base, Premium Plus, Prestige | 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS
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1-20 of 21 Results

Audi Clutch Slave Cylinder

The Audi Clutch Slave Cylinder allows the driver to disconnect the engine power from the gearbox almost instantaneously, which gives every gear change a quick and confident feel. Audi vehicles are unique for brisk acceleration, Quattro all-wheel grip, sleek cabins with Virtual Cockpit screens, and innovative e-tron electric options. Since 1909, Audi has pushed the boundaries of technology from water-cooled engines to self-driving tests, and currently, drivers enjoy sporty sedans and versatile SUVs that balance luxury with everyday ease. Light but strong chassis construction and matrix headlights increase safety while precise steering maintains the brand's signature agile feel. Loyal fans choose Audi because the company combines performance, comfort, and forward-thinking ideas better than the majority of its rivals to make every commute feel special. Inside the drivetrain, the Clutch Slave Cylinder acts in conjunction with the master cylinder to take pedal pressure and turn it into hydraulic power, which drives a rod that releases the clutch disc and allows the transmission to change without grinding. Modern Audis use this hydraulic part due to the fluid's ability to multiply the force of the foot, provide a smoother engagement, and make it a good fit in cramped engine bays. A healthy Clutch Slave Cylinder produces a consistent pedal height and crisp shifting and prevents gears from wear, keeping the entire lineup with the sporty response drivers expect. If there is leakage from the seals or fluid drops, the performance of a worn Clutch Slave Cylinder may cause pedal sinking or stubborn gears; timely attention can keep clutch action sharp, which is a good support to the overall performance reputation of Audi.

Stick with genuine OEM Clutch Slave Cylinder when you need quality that holds up. Audi crafts these parts to hit strict factory specs for every single unit. They also run each part through rigorous checks during production to maintain high quality. You can find exact Audi Clutch Slave Cylinder you need in our huge stock at AudiPartsGiant.com. You'll love our low, economical prices too. Every OEM part carries a real manufacturer's warranty, so you can buy with confidence. Returns aren't a headache here because our policy is simple. Plus, our speedy delivery gets orders out fast. Shop today and buy with total peace of mind.

Audi Clutch Slave Cylinder Parts and Q&A

Slave Cylinder
8E0-721-257-P
Q: How to remove and install the Clutch Slave Cylinder on Audi A4?
A:
Firstly, put the shift lever in Neutral and remove the key in the ignition switch to remove the clutch release cylinder. Activate the parking brake and block the rear wheels to stop rolling, and then lift the front part of the vehicle and place it on jackstands. Then take out the lower splash shield. In other V6 models, one might need to remove the front of the exhaust system and to remove the left side driveaxle off of the flange shaft, to clear the driveaxle out of the way in order to reach the clutch release cylinder. Attach the lever to the shaft of a shift and break apart the shift lever and mounting nut. Disconnect the pressure line with the release cylinder by removing the clip, and be ready to spill some fluid, and seal the line so as to keep the loss and contamination to a minimum. Use the removal bolt of the release cylinder and yank the cylinder out of the transaxle. Installation: To install it, lubricate the end of the pushrod with copper grease, and add lithium-base grease to the section of the boot that fits into the bore of the transaxle. Attach the release cylinder to the release lever directly into the bore to be certain that the pushrod is seated properly in the release lever pocket. Insert the clip, attach the pressure line to the cylinder and make sure that it is firmly attached. Install the hydraulic line release cylinder mounting bolt, provided, and screw it as tight as needed. The rest of the installation is in the same sequence of removal, with some more steps involved, such as bleeding the system, ensuring that the brake fluid reservoir is full and filling it up, and cleaning any spilled brake fluid with water.
Slave Cylinder
8E0-721-257-M
Q: How to aid access to, and install, the Clutch Slave Cylinder in the transmission on Audi A6?
A:
To provide access, unbolt the left drive axle from the transmission and move it out of the way. Take off transmission heat shield assembly. If necessary, unscrew the left transmission support bolts and take it off with the transmission mounting. Detach the bolt and extract the slave cylinder from the rear. To remove the pipe, use a screwdriver to lever out the retaining clip until it comes out with an audible 'click', allowing for the pipe to pull out. Before installation of the slave cylinder on the transmission housing, apply lithium grease on the area of the collar, and also apply copper grease on the tip of the push rod. Insert the clutch slave cylinder into the mount hole in the transmission housing; keep it in line with the direction of operation of the push rod and tighten the bolt. To attach the pipe to the slave cylinder, compress the retaining clip to the maximum distance inwards and push the pipe into the slave cylinder until an audible engagement is emitted. Reinstall the drive axle and heat shield, reattach the transmission support and transmission mount if modified, and bleed the clutch system.