Helpdesk code:

F8D63

Brake Master Cylinder

Product number: PMK491
ART: PMK491 / EAN: 3322937268917

Price incl. vat.
€ 84,72

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Leverdatum: 24-05-2026

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

Manufacturer	Productnumber
SEAT	1J1 614 019 , 1J1614019
SEAT	1J1 614 019 K , 1J1614019K
SEAT	1J1 614 105 H , 1J1614105H
SEAT	1J1 614 105 J , 1J1614105J
SEAT	1J2 614 019 , 1J2614019
VW	1J1 614 019 , 1J1614019
VW	1J1 614 019 K , 1J1614019K
VW	1J1 614 105 H , 1J1614105H
VW	1J1 614 105 J , 1J1614105J
VW	1J2 614 019 , 1J2614019
SKODA	1J1 614 019 , 1J1614019
SKODA	1J1 614 019 K , 1J1614019K
SKODA	1J1 614 105 H , 1J1614105H
SKODA	1J1 614 105 J , 1J1614105J
SKODA	1J2 614 019 , 1J2614019
AUDI	1J1 614 019 , 1J1614019
AUDI	1J1 614 019 K , 1J1614019K
AUDI	1J1 614 105 H , 1J1614105H
AUDI	1J1 614 105 J , 1J1614105J
AUDI	1J2 614 019 , 1J2614019

Usage numbers
PMK491
3
32294E+12

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Brake Master Cylinder

The Brake Master Cylinder (PMK491) 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

Weight	1.1 kg
Svhc	no information available, please contact the manufacturer!
D1 (mm)	23.8
Thread size 1	m12x1
Number of connectors	2
Weight	1.1 kg

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