Master Cylinder Reservoir Cap with Diaphragm, Round Thread on type. Reservoir Cap /Diaphragm This master cylinder reservoir cap is a quality replacement component for repair, restoration, and regular maintenance

Replaces OEM #43513-MJ6-006

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

Fits

• 1970-1974 Honda CB450K
• 1971-1973 Honda CB500K
• 1975-1976 Honda CB500T