SEAL - PISTON (Toyota TY00591-20540-81)

A worn piston seal can allow fluid bypass, reducing system pressure and causing sluggish or incomplete movement. The seal type is a piston seal, which creates a dynamic barrier between the piston and cylinder bore. Its plain mechanical function is to contain pressurized fluid on one side of the piston while preventing leakage to the opposite side. A concrete generic failure consequence is that a degraded seal leads to internal leakage, resulting in loss of force or position-holding ability. This aftermarket replacement part references the Toyota catalog number TY00591-20540-81. The item ships at approximately 0.16 pounds. Verify the serial number or application, then call (562) 693-7748.

Part number variants: TY00591-20540-81, ty00591-20540-81, TY005912054081, ty005912054081