Restore proper engine performance with this Exhaust Valve, designed as a direct replacement for the original Honda component. This valve replaces OEM part number 14721-413-000 and is manufactured to provide reliable sealing and durability under the high temperatures found in the exhaust system.
Exhaust valves endure significant heat and stress during engine operation. Replacing worn or damaged valves during engine service helps maintain proper compression, smooth exhaust flow, and consistent engine performance.
Key Features
• Exhaust valve replacement for Honda engines
• Replaces OEM part number 14721-413-000
• Built to withstand high exhaust temperatures
• Precision manufactured for proper sealing and durability
• Ideal for engine rebuilds, valve service, or maintenance
• Honda part name: Valve, Ex
Fitment / Compatibility
• Honda CB400TI (1978–1979)
• Honda CB400TII (1978–1979)
• Honda CB400T (1980–1981)
• Honda CB450T (1982)
• Honda CB450SC (1982–1983, 1985)
Check the listed model and year, then read any fitment notes in the description.
| Make | Model | Year |
|---|---|---|
| Honda | CB400TI Hawk | 1978 |
| Honda | CB400TIZ Hawk | 1979 |
| Honda | CB400TII Hawk | 1978 |
| Honda | CB400TIIZ Hawk | 1979 |
| Honda | CB400TA Hawk | 1980 |
| Honda | CB400TB Hawk | 1981 |
| Honda | CB450SCC Nighthawk | 1982 |
| Honda | CB450SCD Nighthawk | 1983 |
| Honda | CB450SCF Nighthawk | 1985 |
| Honda | CB450TC | 1982 |
No listed models match your search.
Free ground shipping over $50
To the USA & Canada. In-stock orders usually ship from our own warehouse the same or next business day.
| Destination | Delivery time |
|---|---|
| USA | 4–7 business days |
| Canada | 2–6 business days |
Ground shipping includes tracking, emailed when your order ships. Need it sooner? Express options are available at checkout.
60-day returns on eligible parts
No restocking fees. Eligible parts must be unused, uninstalled, unaltered and complete. The 60-day window starts when your order is delivered.
Electrical parts are excluded from standard returns. Check return eligibility.
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Outside the USA & Canada: Delivery times vary by destination and shipping method. Buyers are responsible for applicable duties, taxes and import fees. We cannot mark orders as gifts.
Frequently Asked Questions
How many exhaust valves replacing Honda OEM 14721-413-000 are included and required?
One exhaust valve replacing Honda OEM 14721-413-000 is included. For the compatible Honda CB400 and CB450 three-valve twins, the engine uses one exhaust valve per cylinder, so two are required to replace every exhaust valve in one engine.
Can an intake valve and an exhaust valve be substituted for one another?
No. Intake and exhaust valves can differ in head diameter, stem dimensions, material and heat capacity. Install Honda reference 14721-413-000 only in the specified exhaust position after confirming the model, year and engine application.
What cylinder-head work should accompany a new exhaust valve?
Measure the valve guide and stem clearance, inspect the seat and spring, and verify installed height and valve clearance to the Honda service manual. A new valve will not correct a worn guide or damaged seat by itself.