One New Aftermarket Replacement Brake Piston Seal for JCB Backhoe Loaders (Project 9 & 12)

This aftermarket replacement brake piston seal fits JCB backhoe loaders designated as Project 9 and Project 12. The seal fits within the piston brake assembly (450/10004) and is essential for maintaining hydraulic pressure and brake function in the wet disc brake system. A failed or worn brake piston seal can result in brake drag, loss of braking force, or fluid leakage -- replacing it restores proper brake piston actuation and safe machine operation.

This part is also commonly sold as part of a brake piston seal kit alongside JCB part 813/50026. If your machine's brake system requires both seals, consider ordering the kit version as well.

Compatible Models

JCB Backhoe Loaders (Project 9 & 12 brake system): 1400B, 1550B, 1600B, 1700B, 214, 214E, 215, 217, 3CX, 3CX SITEMASTER, 3CX SUPER, 3CX SUPER BSII, 3CXE, 3DX, 410, 411, 411B, 412S, 413K, 413S, 416, 416B, 417, 419S, 4C, 4CN, 4CX, 506C, 5CX

JCB Telehandlers: 520-55, 520-55FS, 520LE, 520S, 520SLE, 525-58, 525-67, 525-67FS, 526SLE, 527-67FS, 528S, 530 (SWAY), 530-110, 530-67, 531-70 (SWAY), 926, 930, 940, 945, 950, TM270, TM300, TM320W

Replaces Part Number(s):

813/50012, 813-50012, 81350012

New aftermarket replacement part - not remanufactured, not used.