Genuine Honda - Brake Master Cylinder Diaphragm - 45520-300-000 - Fits Honda CB350 CB360 CB450 CB500 CB550 CB750

Genuine Honda rubber diaphragm for the front and rear master cylinder. This is the diaphragm that seals between the brake reservoir cap and the master cylinder assembly. If you notice that your brake fluid reservoir is leaking fluid onto your gas tank, it could be the diaphragm that isn't making a tight seal or the leak could be coming from the piston.

Brake fluid will ruin painted surfaces, it's best to keep it where it belongs!

Sold individually.

Honda Part Number: 45520-300-000

CB350F - 1972-1974
CB360K - 1974
CB360T - 1975-1976
CB360G - 1974
CB400F Super Sport - 1975-1977
CB400TII - 1978
CB450K - 1970-1974
CB500K - 1971-1973
CB500T - 1975-1976
CB550F Super Sport - 1975-1977
CB550K - 1974-1978
CB750A Hondamatic - 1976-1978
CB750F Super Sport - 1975-1982
CB750K - 1969-1978
CB900C - 1980-1982
CB900F - 1981-1982 + 2002-2007

and many others....fits over 750 different Honda models...