Honda Motorcycle ATV Master Cylinder Reservoir Cap Plastic O-Ring
Description
Honda Motorcycle ATV Master Cylinder Reservoir Cap Plastic O-Ring - Replaces Honda OEM 45521-MJ6-006. This reservoir-cap O-ring seals under the master-cylinder reservoir cap to help keep brake fluid contained and contamination out.
Replace flattened, cut, hardened, swollen, or leaking O-rings during service.
Product Details
| Part type | master-cylinder reservoir-cap O-ring |
|---|---|
| Replaces Honda OEM | 45521-MJ6-006 |
| Sold | individually |
Fitment / Compatibility
Fits Honda - ATV:
- ATC250R (1982)
- TRX650FA (2003-05)
- TRX650FGA (2004-05)
- TRX680FA (2006-08)
- TRX680FGA (2006-08)
Fits Honda:
- CB1000C (1983)
- CB1100F (1983)
- CB350F (1972-74)
- CB360G (1974)
- CB360K (1974)
- CB360T (1975-76)
- CB400A (1978)
- CB400F (1975-77)
- CB450K (1970-74)
- CB500K (1971-73)
- CB500T (1975-76)
- CB550F (1975-77)
- CB550K (1974-78)
- CB600F (2004, 2006)
- CB750A (1976-78)
- CB750F (1975-82)
- CB750K (1969-78)
- CB900C (1980-82)
- CB900F (1981-82, 2002-07)
- CBR1000F (1987-88, 1990-91, 1993-96)
- CBR1000RR (2006-08)
- CBR1100XX (1997-03)
- CBR600F2 (1991-94)
- CBR600F3 (1995-98)
- CBR600F4 (1999-06)
- CBR600RR (2007-08)
- CBR600SE (1998)
- CBR600SJR (1996)
- CBR900RR (1993-02)
- CBX1050 (1979-82)
- CX500 (1978)
- CX500TC (1982)
- CX650T (1983)
- FT500 (1982-83)
- GL1000 (1975-79)
- GL1000LTD (1976)
- GL1100 (1980-83)
- GL1100A (1982-83)
- GL1100I (1980-83)
- GL1200A (1984-87)
- GL1200 (1984)
- GL1200I (1984-87)
- GL1200L (1985)
- GL1200SEI (1986)
- GL1500A (1991-00)
- GL1500I (1991-96)
- GL1500 (1988-90)
- GL1500SE (1990-00)
- GL1800 (2001-08)
- GL1800A (2001-05)
- RVF750R (1994)
- RVT1000R (2000-06)
- ST1100 (1991-02)
- ST1100A (1992-02)
- ST1300 (2003-08)
- ST1300A (2003-08)
- ST1300P (2005)
- ST1300PA (2006-07)
- VF1000F (1984)
- VF1000R (1985-86)
- VF1100C (1983-86)
- VF1100S (1984-85)
- VF500F (1984-86)
- VF700F (1984-85)
- VF750F (1983-84)
- VFR700F2 (1986-87)
- VFR700F (1986)
- VFR750F (1986, 1994-97)
- VFR750R (1990)
- VFR800 (2002-03)
Before Ordering
- Verify OEM/reference 45521-MJ6-006 matches the original part being replaced
- Confirm O-ring inside diameter, cross-section, reservoir-cap groove location, brake-fluid compatibility, and OEM reference
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.
