Honda CB450 CB400 CB900 GL1100 Carb Pump Diaphragm - Replaces Honda OEM 16021-413-751
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Description
Honda CB450 CB400 CB900 GL1100 Carb Pump Diaphragm - Replaces Honda OEM 16021-413-751. This carburetor diaphragm operates or seals the specified vacuum, slide, or pump circuit in the carburetor.
Replace torn, stiff, or poorly sealing diaphragms when slide lift, throttle response, or vacuum operation is inconsistent.
Product Details
| Replaces Honda OEM | 16021-413-751 |
|---|---|
| Part type | carburetor diaphragm |
| Sold | individually |
Fitment / Compatibility
Fits Honda:
- CB400T (1980-81)
- CM400A (1980-81)
- CM400E (1980-81)
- CM400T (1980-81)
- CB900F (1981-82)
- GL1100 (1980-83)
- GL1100A (1982-83)
- GL1100I (1980-83)
- CM250 (1983)
- CM400C (1981)
- CB450SC (1982)
- CB450T (1982)
- CM450C (1982)
- CM450E (1982)
- CX500C (1980-82)
- CX500D (1980-81)
- GL500 (1981-82)
- GL500I (1981-82)
Before Ordering
- Verify OEM/reference 16021-413-751 matches the part being replaced
- Confirm diaphragm diameter, lip shape, slide/cover attachment, and carburetor model
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.
