Honda CB750 CB550 CB500 CB400 Reservoir Cap & Diaphragm - Replaces Honda OEM 43515-MJ6-006
Description
Honda CB750 CB550 CB500 CB400 Reservoir Cap & Diaphragm - Replaces Honda OEM 43515-MJ6-006. This brake-fluid reservoir cap and diaphragm seals the master-cylinder reservoir while allowing normal fluid-level movement.
Replace torn, stiff, or poorly sealing diaphragms when slide lift, throttle response, or vacuum operation is inconsistent.
Product Details
| Replaces Honda OEM | 43515-MJ6-006 |
|---|---|
| Part type | brake-fluid reservoir cap and diaphragm |
| Sold | individually |
Fitment / Compatibility
Fits Honda:
- CB750F (1975-82)
- CB900C (1980-82)
- CB900F (1981-82)
- CB1000C (1983)
- CB1100F (1983)
- CB400T2 (1978)
- CB350G (1973)
- CB360K (1974)
- CB360G (1974)
- CB360T (1975-76)
- CBX1050 (1979-82)
- GL1000 (1975-79)
- GL1000LTD (1976)
- GL1100 (1980-82)
- GL1100A (1982)
- GL1100I (1980-82)
- CB500T (1975-76)
- CB400A (1978)
- CB400T (1978)
- CB350F (1972-74)
- CB750A (1976-78)
- CB750K (1969-78)
- CB550F (1975-77)
- CB550K (1974-78)
- CB500K (1971-73)
- CB450K (1970-74)
- CB400F (1975-77)
Before Ordering
- Verify OEM/reference 43515-MJ6-006 matches the part being replaced
- Confirm reservoir shape, cap style, diaphragm outline, fluid compatibility, brake/clutch position, and front/rear application
Fitment
Custom / Universal part
Check compatibility before ordering
Universal does not mean it fits every motorcycle. Compare the dimensions, mounting or connection details, and specifications in the description with your setup. Make sure this is the correct part for your intended use.
Selecting your bike does not confirm fitment for this item.
View product detailsCheck the listed model, year and any fitment notes in the description.
| Make | Model | Years |
|---|
No matching models in this list.
Shipping + Returns
Shipping & delivery
In-stock orders typically ship the same or next business day. Ground delivery is estimated at 3–8 business days to the USA and 2–6 business days within Canada after shipping.
Free ground shipping: USA orders of $50 USD or more; Canadian orders over $50 CAD.
View shipping options and details
Returns
Eligible unused, unaltered parts can be returned within 60 days of delivery, with original packaging. No restocking fees. Electrical parts are excluded.
