Product Description
The brake master cylinder is a critical hydraulic component that converts pedal force into pressure, activating the braking system. Our HBS Brake Master Cylinder 15903802 (OEM: 1413022F) is engineered for JCB models (410/420/425 Dozers, 50519 FM). Features include 1.5″ bore diameter, cast iron construction, and exact OEM fitment (15/903802, 15-903802).
Ideal for heavy-duty applications, it ensures consistent pressure delivery and corrosion resistance.
Product Information
Model No |
15/903802, 15903802 |
Material |
Gray cast iron |
Bore Diameter |
1.5″” |
Type |
Brake Cylinder |
Car Make |
50519 FM, 411, 416, 415, 425
|
Application |
425 Dozer, 420 Dozer, 410 Dozer, 420, 410
|

About HBS
Hipsen(Quzhou) Brake System Parts Co., Ltd (HBS) is a professional manufacturer of auto brake master cylinders. We produce aftermarket parts and provide custom manufacturing services.
Our products have been exported to North America, Europe…etc since 2015. We have been verified with a quality certificate of ISO9001:2015, and the ISO/TS16949 certificate is coming in 2024.
Both the finished products and the production processes have received recognition from the brands we have collaborated with For example, Cardone, Ford Otosan, Polaris, Electra Meccanica, Wildwood, Hayes, and ZongShen.
Why Choose HBS

Numerous models in stock One-year Warranty Friendly Payment Methods
Complete coverage, check in Brake Master Technicians follow the whole after-sales process; Safe payment methods or percentage for you
Cylinder Provide solutions within three working days can be negotiated
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