BMW E3 / E9 / E12 / E24 / Neue Klasse Brake Master Cylinder Repair Kit – Genuine BMW NOS – 34311103745

Genuine BMW New Old Stock brake master cylinder repair kit for selected classic BMW applications.

Contains the replacement pistons, rubber seals, protective boot and small components shown in the photographs. Intended for rebuilding the corresponding original brake master cylinder.

Supplied with its original BMW parts box, labelled 34 31 1 103 745 and “Made in Western-Germany”.

Product details

• Product: Brake master cylinder repair kit / Reparatursatz Hauptbremszylinder

• Brand: Genuine BMW

• BMW part number: 34311103745

• Formatted BMW number: 34 31 1 103 745

• Short reference: 1103745

• Application: Internal repair of the corresponding brake master cylinder

• Associated catalogue cylinder size: 22.20 mm

• Condition: New Old Stock — unused

• Quantity supplied: One kit with the contents photographed

• Sales unit: Per kit

• Required quantity: One kit per matching master cylinder

The cylinder size is a catalogue specification. Please verify the actual master cylinder fitted before ordering.

Vehicle compatibility

For selected versions of the following BMW models with the corresponding master cylinder:

• BMW Neue Klasse: 1800, 2000 and 2000 tilux

• BMW E3: 2500, 2800, 3.0S, 3.0Si, 3.0L, 3.3L and 3.3Li

• BMW E9: 2.5CS, 2800CS, 3.0CS, 3.0CSi and selected CSL applications

• BMW E12: 518, 520, 520i, 525, 528, 528i and selected 535i applications

• BMW E24: Selected early 628CSi, 633CSi and 635CSi applications, with catalogue restrictions up to May 1982

Production-date and left-hand-drive/right-hand-drive restrictions apply, particularly to E12 and E24 applications.

Please confirm compatibility using BMW number 34311103745, the master cylinder reference, bore diameter and piston arrangement. Model designation alone is insufficient to establish fitment.

Condition

Unused Genuine BMW New Old Stock kit from long-term storage.

The metal components show light surface discolouration and storage-related marks. The rubber components may show dust, surface bloom and age-related changes.

The original BMW box has considerable storage wear, including staining, creasing, tears, aged tape and handwritten annotations.

The kit has not been installed or hydraulically tested. Rubber flexibility, sealing performance and remaining service life have not been verified.

Before installation, a brake specialist should inspect the pistons, seals and master cylinder bore and replace any aged or unsuitable components.

Please carefully review all photographs for the exact contents and condition. Completeness against the original factory kit specification has not been verified.

Included

• Two metal piston components shown

• Four separate black rubber sealing rings shown

• One rubber protective boot

• Washers and small components shown

• Original BMW parts box

The master cylinder body, reservoir and brake lines are not included.

Only the photographed contents are supplied.

Storage location: 208