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Audi A4 Brake Master Cylinder Parts

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Lock Nut

ES#472292 - WHT000428 - Lock Nut - Used when mounting master cylinder and brake booster. - Genuine Volkswagen Audi - Audi

Used when mounting master cylinder and brake booster. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
472292
Mfg#:
WHT000428
Ships in 4 Business Days
14% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$28.99

This product was last offered at the strikethrough price on
02-26-2026

$24.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Brake Master Cylinder

ES#250232 - 4D0611021A - Brake Master Cylinder - Does not include gasket or reservoir - Meyle - Audi Volkswagen

Does not include gasket or reservoir affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
From VIN 8D-X-200001, split is in the 1999 model year

Brand:
Meyle - Corporate Logo
ES#:
250232
Mfg#:
4D0611021A
Ships on Oct 13, 2026
$96.95

This product was last offered at the strikethrough price on
06-03-2026

$93.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Brake Master Cylinder

ES#2581146 - 8D0611021B - Brake Master Cylinder - Does not include gasket or reservoir - Meyle - Audi Volkswagen Porsche

Does not include gasket or reservoir affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Up to VIN 8D-X-199999, split is in the 1999 model year

Brand:
Meyle - Corporate Logo
ES#:
2581146
Mfg#:
8D0611021B
Ships on Oct 13, 2026
$93.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

GASKET

ES#3981450 - 1S0612250A - GASKET - Genuine Volkswagen Audi - Audi

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3981450
Mfg#:
1S0612250A
Ships in 1-2 days
13% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$23.99

This product was last offered at the strikethrough price on
02-26-2026

$20.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Brake Master Cylinder Reservoir

Located on top of the master cylinder affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Metzeler
ES#:
4429713
Mfg#:
8E0611301G
Back Ordered
$83.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Low Fluid Level Sensor

ES#437357 - 8E0611377 - Low Fluid Level Sensor - Monitors brake fluid level inside reservoir - Genuine Volkswagen Audi - Audi Volkswagen

Monitors brake fluid level inside reservoir affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
437357
Mfg#:
8E0611377
Ships in 3 Business Days
10% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$67.99

This product was last offered at the strikethrough price on
02-26-2026

$60.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Brake Master Cylinder Reservoir

ES#7813 - 8E0611301 - Brake Master Cylinder Reservoir - Located on top of the master cylinder - Febi - Audi Volkswagen

Located on top of the master cylinder affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Up to VIN 8D-X-199999, split is in the 1999 model year

Brand:
Febi - Corporate Logo
ES#:
7813
Mfg#:
8E0611301
In Stock at Vendor
$67.93

This product was last offered at the strikethrough price on
05-09-2026

$60.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Brake Fluid Reservoir Cap

ES#3189917 - 82571 - Brake Fluid Reservoir Cap - Clean up your engine bay with a new cap - Dorman - Audi Volkswagen

Clean up your engine bay with a new cap affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Dorman - Corporate Logo
ES#:
3189917
Mfg#:
82571
Ships in 5 Business Days
$53.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Check Valve

ES#437396 - 8E0611933AB - Check Valve - Does not include grommet or hose - Genuine Volkswagen Audi - Audi

Does not include grommet or hose affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For automatic transmission vehicles

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
437396
Mfg#:
8E0611933AB
Ships in 9 Business Days
13% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$51.99

This product was last offered at the strikethrough price on
02-26-2026

$44.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Mounting Bolt

ES#467985 - N10334301 - Mounting Bolt - Used when mounting master cylinder and brake booster. - Genuine Volkswagen Audi - Audi

Used when mounting master cylinder and brake booster. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
467985
Mfg#:
N10334301
Ships in 3 Business Days
$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Brake Master Cylinder Reservoir

ES#3189298 - 603-645 - Brake Master Cylinder Reservoir - Located on top of the master cylinder - Dorman - Audi Volkswagen

Located on top of the master cylinder affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
From VIN 8D-X-200001, split is in the 1999 model year

Brand:
Dorman - Corporate Logo
ES#:
3189298
Mfg#:
603-645
Ships in 5 Business Days
$166.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Brake Master Cylinder Reservoir

ES#4620742 - 8E0611301G - Brake Master Cylinder Reservoir - Located on top of the master cylinder - Vaico - Audi Volkswagen

Located on top of the master cylinder affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4620742
Mfg#:
8E0611301G
In Stock at Vendor
$106.99

This product was last offered at the strikethrough price on
02-13-2026

$69.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

VW | Vacuum Hose, braking system

ES#4869742 - 4B0611931DF - VW | Vacuum Hose, braking system - Vaico Q+ - Audi Volkswagen

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Engine codes ATW & AWM

Brand:
Vaico Q+ - Corporate Logo
ES#:
4869742
Mfg#:
4B0611931DF
In Stock at Vendor
$140.99

This product was last offered at the strikethrough price on
05-07-2026

$136.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Pump

Generates vacuum when under positive pressure affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4004587
Mfg#:
06J145100G
Ships in 4 Business Days
$365.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

GASKET

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3631208
Mfg#:
8K0611243B
Ships in 3 Business Days
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CYLINDER

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3668947
Mfg#:
8W0611021DREP
Ships in 1-2 days
11% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$513.99

This product was last offered at the strikethrough price on
02-26-2026

$458.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Brake Master Cylinder Parts

The master cylinder is the heart of the brake hydraulic system. ECS stocks master cylinders and related brake system parts like boosters and fluid reservoirs, from both OE suppliers and name-brand aftermarket sources.

Let us help you find the parts that fit your Audi

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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