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Clutch Master Cylinder

The clutch master cylinder translates forces applied to the pedal down to the slave cylinder. No pressure in the pedal can be indicative of a failed master cylinder.
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ECS Billet Aluminum Clutch Master Cylinder Fitting - 21521151697 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECS - Corporate Logo
T#:36472759
Part#: 055182LA01-02
In Stock
Sale - Save 25% $ 33.99

This product was last offered at the strikethrough price on
06-14-2026

$ 25.49 USD
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Sale - Save 25%
$ 33.99

This product was last offered at the strikethrough price on
06-14-2026

$ 25.49 USD
Free Shipping on orders $49 and up

The ECS Billet Master Cylinder Fitting is the ultimate solution for a notorious failure point in BMW E30 clutch systems. This critical fitting, located at the end of the master cylinder reservoir hose, is responsible for delivering hydraulic fluid to the clutch master cylinder inlet. Unfortunately, the OEM plastic fitting is prone to degradation after prolonged exposure to brake fluid, often leading to total hydraulic pressure loss and brake fluid leaks inside your vehicle.

ECS has addressed this issue by engineering a robust and long-lasting alternative. Crafted from 6061 billet aluminum and finished with black hard-coat anodizing for superior corrosion resistance, this precision-machined fitting replaces the fragile plastic original, ensuring leak-free performance for the lifetime of your vehicle. Upgrade to our Billet Master Cylinder Fitting during your next clutch master cylinder service and enjoy peace of mind knowing your BMW is equipped with a durable, high-quality solution.

Features & Benefits:

Made from 6061 billet aluminum for a permanent, reliable upgrade over the factory plastic fitting. Black hard-coat anodized finish ensures long-lasting protection against the elements. Precision-machined barbs match OEM dimensions for a leak-free seal with Genuine and aftermarket master cylinders. Designed for a secure fit within the factory grommet location. Prevents brake fluid leaks and loss of clutch hydraulic pressure caused by plastic fitting failure. Upgrade your BMW and bulletproof your master cylinder with the ECS Billet Aluminum Master Cylinder Fitting. Ensure clutch hydraulic system reliability and enjoy peace of mind knowing your failure-prone plastic master cylinder fitting has been addressed.

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Clutch Master Cylinder
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bremmen Parts - Corporate Logo
T#:36269415
Part#: 21526773670
In Stock
Sale - Save 15% $ 93.99

This product was last offered at the strikethrough price on
05-03-2026

$ 79.89 USD
Free Shipping on orders $49 and up
Sale - Save 15%
$ 93.99

This product was last offered at the strikethrough price on
05-03-2026

$ 79.89 USD
Free Shipping on orders $49 and up
Clutch Master Cylinder
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bremmen Parts - Corporate Logo
T#:36269413
Part#: 21526758829
In Stock
Sale - Save 20% $ 83.99

This product was last offered at the strikethrough price on
05-03-2026

$ 66.90 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 83.99

This product was last offered at the strikethrough price on
05-03-2026

$ 66.90 USD
Free Shipping on orders $49 and up

Clutch Master Cylinder
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bremmen Parts - Corporate Logo
T#:36269414
Part#: 21526758820
In Stock
Sale - Save 20% $ 85.99

This product was last offered at the strikethrough price on
05-03-2026

$ 68.54 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 85.99

This product was last offered at the strikethrough price on
05-03-2026

$ 68.54 USD
Free Shipping on orders $49 and up

INPUT CYLINDER CLUTC
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Genuine MINI - Corporate Logo
T#:537856
Part#: 21526865168
In Stock
Sale - Save 5% $ 212.99

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

$ 202.26 USD
Free Shipping
Sale - Save 5%
$ 212.99

This product was last offered at the strikethrough price on
06-25-2026

$ 202.26 USD
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Clutch Cylinder Refresh Kit
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Packaged by Turner - Corporate Logo
T#:15744036
Part#: 343411635650-KT
In Stock
Sale - Save 14% $ 255.99

This product was last offered at the strikethrough price on
05-03-2026

$ 218.98 USD
Free Shipping on orders $49 and up
Sale - Save 14%
$ 255.99

This product was last offered at the strikethrough price on
05-03-2026

$ 218.98 USD
Free Shipping on orders $49 and up
A leaking clutch cylinder often feels like a failing clutch or a problematic transmission, this kit includes everything needed to not only replace but upgrade your clutch hydraulic system!