Description
The Genuine BMW Clutch Master Cylinder Repair Kit (Part Number: 21521155030) is a brand-new, unused OEM component designed for BMW clutch hydraulic systems. This part is essential for maintaining proper clutch operation by ensuring accurate pressure transfer within the hydraulic system that controls clutch engagement and disengagement.
This repair kit is manufactured to Genuine BMW standards, ensuring the same quality, fit, and performance as the original factory-installed component.
Fitment / Application
This part is used within BMW clutch hydraulic systems and is compatible with vehicles requiring the following OEM part numbers:
- 21521155030
- 21521154373
- 21521155024
It is designed for use in the clutch hydraulic system, which includes components such as:
- Clutch master cylinder system
- Clutch slave cylinder system
- Clutch hydraulic hoses and related hydraulic components
These systems work together to control the engagement and disengagement of the clutch pressure plate against the clutch disc.
Product Details
- Part Number: 21521155030
- Brand: Genuine BMW
- Condition: Brand new, unused
- System: Clutch hydraulic system component
- Type: Clutch master cylinder repair kit
- OEM Quality: Yes (factory specification)
Fitment / Application
BMW 528e (1985–1988)
- 1985 BMW 528e Clutch Master Cylinder Repair Kit – Automatic RWD Sedan 2.7L L6 M20 Gas
- 1985 BMW 528e Clutch Master Cylinder Repair Kit – Manual RWD Sedan 2.7L L6 M20 Gas
- 1986 BMW 528e Clutch Master Cylinder Repair Kit – Automatic RWD Sedan 2.7L L6 M20 Gas
- 1986 BMW 528e Clutch Master Cylinder Repair Kit – Manual RWD Sedan 2.7L L6 M20 Gas
- 1987 BMW 528e Clutch Master Cylinder Repair Kit – Automatic RWD Sedan 2.7L L6 M20 Gas
- 1987 BMW 528e Clutch Master Cylinder Repair Kit – Manual RWD Sedan 2.7L L6 M20 Gas
- 1988 BMW 528e Clutch Master Cylinder Repair Kit – Automatic RWD Sedan 2.7L L6 M20 Gas
- 1988 BMW 528e Clutch Master Cylinder Repair Kit – Manual RWD Sedan 2.7L L6 M20 Gas
BMW 535i (1985–1988)
- 1985 BMW 535i Clutch Master Cylinder Repair Kit – Automatic RWD Sedan 3.5L L6 M30 Gas
- 1985 BMW 535i Clutch Master Cylinder Repair Kit – Manual RWD Sedan 3.5L L6 M30 Gas
- 1986 BMW 535i Clutch Master Cylinder Repair Kit – Automatic RWD Sedan 3.5L L6 M30 Gas
- 1986 BMW 535i Clutch Master Cylinder Repair Kit – Manual RWD Sedan 3.5L L6 M30 Gas
- 1987 BMW 535i Clutch Master Cylinder Repair Kit – Automatic RWD Sedan 3.5L L6 M30 Gas
- 1987 BMW 535i Clutch Master Cylinder Repair Kit – Manual RWD Sedan 3.5L L6 M30 Gas
- 1988 BMW 535i Clutch Master Cylinder Repair Kit – Automatic RWD Sedan 3.5L L6 M30 Gas
- 1988 BMW 535i Clutch Master Cylinder Repair Kit – Manual RWD Sedan 3.5L L6 M30 Gas
BMW 635CSi (1985–1989)
- 1985 BMW 635CSi Clutch Master Cylinder Repair Kit – Automatic RWD Coupe 3.5L L6 M30 Gas
- 1985 BMW 635CSi Clutch Master Cylinder Repair Kit – Manual RWD Coupe 3.5L L6 M30 Gas
- 1986 BMW 635CSi Clutch Master Cylinder Repair Kit – Automatic RWD Coupe 3.5L L6 M30 Gas
- 1986 BMW 635CSi Clutch Master Cylinder Repair Kit – Manual RWD Coupe 3.5L L6 M30 Gas
- 1987 BMW 635CSi Clutch Master Cylinder Repair Kit – Automatic RWD Coupe 3.5L L6 M30 Gas
- 1987 BMW 635CSi Clutch Master Cylinder Repair Kit – Manual RWD Coupe 3.5L L6 M30 Gas
- 1988 BMW 635CSi Clutch Master Cylinder Repair Kit – Automatic RWD Coupe 3.5L L6 M30 Gas
- 1988 BMW 635CSi Clutch Master Cylinder Repair Kit – Manual RWD Coupe 3.5L L6 M30 Gas
- 1989 BMW 635CSi Clutch Master Cylinder Repair Kit – Automatic RWD Coupe 3.5L L6 M30 Gas
- 1989 BMW 635CSi Clutch Master Cylinder Repair Kit – Manual RWD Coupe 3.5L L6 M30 Gas
BMW 735i (1985–1986)
- 1985 BMW 735i Clutch Master Cylinder Repair Kit – Automatic RWD Sedan 3.5L L6 M30 Gas
- 1985 BMW 735i Clutch Master Cylinder Repair Kit – Manual RWD Sedan 3.5L L6 M30 Gas
- 1986 BMW 735i Clutch Master Cylinder Repair Kit – Automatic RWD Sedan 3.5L L6 M30 Gas
- 1986 BMW 735i Clutch Master Cylinder Repair Kit – Manual RWD Sedan 3.5L L6 M30 Gas
BMW 535is (1988)
- 1988 BMW 535is Clutch Master Cylinder Repair Kit – Automatic RWD Sedan 3.5L L6 M30 Gas
- 1988 BMW 535is Clutch Master Cylinder Repair Kit – Manual RWD Sedan 3.5L L6 M30 Gas
Function and Purpose
The clutch hydraulic system is responsible for transferring force from the clutch pedal to the clutch assembly. This allows smooth engagement and disengagement of the transmission. A properly functioning master cylinder repair kit ensures consistent hydraulic pressure, improving clutch response and overall drivability.
OEM / Genuine BMW Information
Genuine BMW parts are the same components originally used in BMW vehicle production. While BMW designs the parts, manufacturing is often carried out by established OEM suppliers such as Bosch, Sachs, ZF, Lemförder, Valeo, TRW, VDO, and others.
Each Genuine BMW part is built to strict factory specifications and may include manufacturer stampings alongside BMW identification markings.
Quality Assurance
This Genuine BMW component is produced to meet original factory standards for durability, performance, and fitment accuracy. It is intended to restore or maintain OEM-level clutch system performance without compromise.
