Honda CB750 CB400 CB650 CB900 Front Master Cylinder Reservoir Diaphragm
Description
Honda CB750 CB400 CB650 CB900 Front Master Cylinder Reservoir Diaphragm - Replaces Honda OEM 45520-422-026. This master-cylinder reservoir diaphragm seals under the reservoir cap while allowing fluid level changes during brake or clutch operation.
Replace swollen, torn, hardened, or leaking diaphragms during reservoir service.
Product Details
| Replaces Honda OEM | 45520-422-026 |
|---|---|
| Position / side | Front |
| Part type | master-cylinder reservoir diaphragm |
| Sold | individually |
Fitment / Compatibility
Fits Honda:
- CB400T (1980)
- CB400T2 (1979)
- CM400A (1979-80)
- CM400T (1979-80)
- CX500 (1979)
- CX500C (1979-80)
- CX500D (1979-80)
- CB650 (1979-80)
- CB650C (1980)
- CB750C (1980)
- CB750F (1979-80)
- CB750K (1979-80)
- CB750L (1979)
- CB900C (1980-81)
- GL1100 (1980-81)
- GL1100I (1980-81)
- CBX1050 (1979-80)
- GL1000 (1979)
Before Ordering
- Use OEM/reference 45520-422-026 to confirm the correct application
- 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.
