Description:

This flexible diaphragm fits beneath the brake master cylinder reservoir cap. It forms a barrier between the brake fluid and the vented airspace above it, helps limit moisture and contamination, and flexes as the reservoir level changes. Replace it if torn, hardened, swollen or permanently distorted, and seat it evenly before reinstalling the cap.

Replaces OEM #45520-300-000

• Fits beneath the brake master cylinder reservoir cap
• Flexes with normal brake fluid level changes
• Helps limit moisture and contamination in the reservoir

Fits

• 1969-1978 Honda CB750K
• 1975-1982 Honda CB750F
• 1976-1978 Honda CB750A
• 1980-1982 Honda CB900C
• 1981-1982, 2002-2007 Honda CB900F
• 1983 Honda CB1000C
• 1983 Honda CB1100F
• 2013 Honda CB1100