How to remove and install the Brake Master Cylinder on Audi A6?

Remove the rubber molding from the rear bulkhead of the Engine Compartment and pull the plenum chamber cover forward to remove it. Remove the brake fluid reservoir cap and use a siphon to drain the brake fluid out of the fluid reservoir. For manual transmission vehicles, disconnect and plug the clutch master cylinder supply hose. Disconnect the harness connector for the brake fluid level switch. While working underneath the brake fluid reservoir, disconnect the brake lines at the brake master cylinder and immediately seal the brake lines while plugging the brake fluid ports. Detach the M16 mounting nuts securing the brake master cylinder, and carefully remove the brake master cylinder from the brake booster. When fitting the brake master cylinder, make sure that you use pushrod on brake master cylinder. Then apply slight pressure on the brake pedal so that the pushrod moves towards brake master cylinder. This will make it easier to guide brake master cylinder on pushrod. The brake system has been flushed and bled.

Genuine Audi A6 Brake Master Cylinder

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7 Brake Master Cylinders found

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Audi A6 Master Cylinder Part Number: 4G1-611-021-C
$517.65 MSRP: $725.01
You Save: $207.36 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cylinder
- Replaces: 4G1-611-021-A, 4G1-611-021
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2012-2018 Audi A6 | Premium, Premium Plus, Sport | 4 Cyl 2.0 L GAS
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Audi A6 Master Cylinder Part Number: 8E0-611-021-B
$250.09 MSRP: $350.27
You Save: $100.18 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cylinder
- Replaces: 8E0-611-021-A
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2002-2004 Audi A6 | Base | 6 Cyl 3.0 L GAS
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Audi A6 Master Cylinder Part Number: 4D0-611-021-A
$307.02 MSRP: $430.00
You Save: $122.98 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cylinder
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 1999-2001 Audi A6 | Base | 6 Cyl 2.8 L GAS
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Audi A6 Master Cylinder Part Number: 4B3-611-021
$517.88 MSRP: $725.31
You Save: $207.43 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Cylinder
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2006-2011 Audi A6 | Base | 6 Cyl 3.2 L GAS
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Audi A6 Master Cylinder Part Number: 4A0-611-021-D
$391.99 MSRP: $549.00
You Save: $157.01 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cylinder
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 1995-1996 Audi A6 | Avant, Base | 6 Cyl 2.8 L GAS
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Audi A6 Master Cylinder Part Number: 8D0-611-021-B
$242.76 MSRP: $340.00
You Save: $97.24 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Cylinder
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 1998-1999 Audi A6 | Base | 6 Cyl 2.8 L GAS
View related parts
Audi A6 Master Cylinder Part Number: 8E0-611-021
$271.75 MSRP: $380.61
You Save: $108.86 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Cylinder
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2002 Audi A6 | Base | 6 Cyl 3.0 L GAS

Audi A6 Brake Master Cylinder

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Audi A6 Brake Master Cylinder Parts and Q&A

Master Cylinder
4D0-611-021-A
Q: How to remove and install the Brake Master Cylinder on Audi A6?
A:
Remove the rubber molding from the rear bulkhead of the Engine Compartment and pull the plenum chamber cover forward to remove it. Remove the brake fluid reservoir cap and use a siphon to drain the brake fluid out of the fluid reservoir. For manual transmission vehicles, disconnect and plug the clutch master cylinder supply hose. Disconnect the harness connector for the brake fluid level switch. While working underneath the brake fluid reservoir, disconnect the brake lines at the brake master cylinder and immediately seal the brake lines while plugging the brake fluid ports. Detach the M16 mounting nuts securing the brake master cylinder, and carefully remove the brake master cylinder from the Brake Booster. When fitting the brake master cylinder, make sure that you use pushrod on brake master cylinder. Then apply slight pressure on the brake pedal so that the pushrod moves towards brake master cylinder. This will make it easier to guide brake master cylinder on pushrod. The brake system has been flushed and bled.