Master Cylinder Reservoir Cap Plastic O-Ring, This master cylinder reservoir cap plastic o-ring is a quality replacement component for repair, restoration, and regular maintenance. As the internal seals age and swell, the lever goes spongy or slowly sinks to the bar and braking fades

Replaces OEM #45521-MJ6-006

• Restores firm lever feel and hydraulic pressure
• Cures a spongy or sinking lever
• Confirm bore size against your original

Fits

• 1972-1974 Honda CB350F
• 1975-1976 Honda CB360T
• 1982 Honda - ATV ATC250R