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Brake Master Cylinder

Product number: 05-0040
ART: 05-0040 / EAN: 4041248911181

Price incl. vat.
€ 18,90

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Leverdatum: 03-05-2026

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Brake Master Cylinder TOPRAN 102 633)

EAN code
Productnumber	102 633
Brand	TOPRAN
Price incl. vat. € 25,00

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Brake Master Cylinder DELPHI LM41531)

EAN code	5012759811832
Productnumber	LM41531
Brand	DELPHI
Price incl. vat. € 49,28

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Manufacturer	Model	Version	Engine code	Construction type	Construction start	Construction end	Pk	Power kw
AUDI
VW

Manufacturer	Productnumber
VW	171 611 019 , 171611019
VW	171 611 019A , 171611019A
VW	171 611 019B , 171611019B
VW	171 611 019C , 171611019C
VW	171 611 019D , 171611019D
VW	171 611 019E , 171611019E
VW	171 611 019H , 171611019H
VW	171 611 019N , 171611019N
VW	811 611 019B , 811611019B
AUDI	171 611 019 , 171611019
AUDI	171 611 019A , 171611019A
AUDI	171 611 019B , 171611019B
AUDI	171 611 019C , 171611019C
AUDI	171 611 019D , 171611019D
AUDI	171 611 019E , 171611019E
AUDI	171 611 019H , 171611019H
AUDI	171 611 019N , 171611019N
AUDI	811 611 019B , 811611019B

Usage numbers
EL050040

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Brake Master Cylinder

The Brake Master Cylinder (05-0040) generates the hydraulic pressure needed for strong and consistent braking performance. Replacing a worn master cylinder restores firm pedal feel and safe, reliable brake operation. Use Porza’s smart search to find the correct unit.

FAQ

A brake master cylinder is the central hydraulic component of the braking system that converts the force from the brake pedal into hydraulic pressure. This pressure is distributed through the brake lines to the calipers or wheel cylinders, activating the brakes at each wheel. It ensures balanced and responsive braking performance across the entire vehicle.

Key specifications include bore diameter, number of circuits (single or dual circuit), reservoir capacity, mounting configuration, and connection types for brake lines. Brake master cylinders are typically made from cast iron or aluminum, with internal seals made from EPDM rubber compatible with DOT 3, DOT 4, or DOT 5.1 brake fluids. They must withstand high hydraulic pressures (often exceeding 100 bar) and operating temperatures typically above 150–200°C.

Replacement is necessary when there are signs of internal or external fluid leakage, reduced braking efficiency, a spongy or sinking brake pedal, or inconsistent pressure. Internal seal wear or corrosion can lead to loss of pressure and compromised braking safety. In such cases, immediate inspection and replacement are recommended.

Porza offers a fit guarantee option where your vehicle details, such as license plate or VIN, are checked against product specifications. This ensures the brake master cylinder matches your exact vehicle configuration, including connection types and system requirements, reducing the risk of incorrect fitment.

Porza supplies high-quality brake components with fast delivery across Europe. Customers can order online or choose in-store pickup in the Netherlands, Germany, or Belgium. This provides quick and flexible access to essential parts for both professional workshops and individual users, with reliable European-wide shipping.

If you select the fit guarantee, Porza verifies compatibility before shipment. If the product does not fit or meet expectations, it can be returned according to the return policy. This ensures a secure and risk-free purchasing experience.

Straelseweg 52, 5911 CR
Venlo
The Netherlands

Willem de Rijkelaan 15a, 5616 HH
Eindhoven
The Netherlands

info@porza.nl
085 401 1901
KVK 0123456678
BTW 01NL123435B1

Material	cast iron
D1 (mm)	20.64

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