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Honda CB900 CB750 CB650 CB450 CB400 air cut off valve 16048-429-771
Air-cut valve kit, SKU 20-4020: product photo and reviewed parts fiche. Example diagram; check listing for fitment.
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60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
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Honda CB900 CB750 CB650 CB450 CB400 air cut off valve 16048-429-771

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Load image into Gallery viewer, Honda CB900 CB750 CB650 CB450 CB400 air cut off valve 16048-429-771
Load image into Gallery viewer, Air-cut valve kit, SKU 20-4020: product photo and reviewed parts fiche. Example diagram; check listing for fitment.

Honda CB Air Cut Off Valve ~ Replaces 16048-429-771

20-4020
$26.95 USD
In stock Usually ships the same or next business day
Check model fitment View fitment
Questions about this part? Contact us 4.8/5 1,329 store reviews
Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
Browse all parts
Honda CB Air Cut Off Valve ~ Replaces 16048-429-771
$26.95 USD
Description

Replace your DOHC CB's carb air cut-off valve with this Carb Air Cut-Off Valve, replacing OEM #16048-429-771 (diaphragm) and #16048-425-771 (spring + 1 O-ring).

Key Features
• Carb air cut-off valve
• Replaces OEM #16048-429-771 (diaphragm) + #16048-425-771 (spring + O-ring)

Fitment / Compatibility

• Honda CB750K (1980‑82)
• CB750F (1980‑82) Supersport
• CB750C (1980‑82) Custom

• Honda CB750SC (1982‑83) Nighthawk

• Honda CB900C (1980‑82) Custom
• CB900F (1981‑82) Supersport

• Honda CB650 (1980)
• CB650C (1980) Custom

• Honda CB400T (1980‑81)
• CB450SC (1982) Nighthawk
• CB450T (1982)

Part Number: 20-4020

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Check the listed model and year, then read any fitment notes in the description.

Make Model Year
Honda CB750K 1980
Honda CB750F 1980
Honda CB750C Custom 1980
Honda CB750K 1981
Honda CB750F 1981
Honda CB750C 1981
Honda CB750K 1982
Honda CB750F 1982
Honda CB750C 1982
Honda CB750SC Nighthawk 1982
Honda CB750SC 1983
Honda CB900C Custom 1980
Honda CB900C 1981
Honda CB900F Supersport 1981
Honda CB900C 1982
Honda CB900F 1982
Honda CB650 1980
Honda CB650C Custom 1980
Honda CB400TA Hawk 1980
Honda CB400TB Hawk 1981
Honda CB450SCC Nighthawk 1982
Honda CB450TC 1982

Free ground shipping over $50

To the USA & Canada. In-stock orders usually ship from our own warehouse the same or next business day.

Estimated ground delivery after your order ships
DestinationDelivery time
USA4–7 business days
Canada2–6 business days

Ground shipping includes tracking, emailed when your order ships. Need it sooner? Express options are available at checkout.

See full shipping details

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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Other shipping options

Canada Post Economy: Available at checkout for select small items. Allow 1–3 weeks for delivery. No tracking or insurance is included.

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

What is included with the carburetor air cut-off valve?

The air cut-off valve includes the diaphragm, spring and one O-ring.

Which Honda OEM numbers does the air cut-off valve replace?

The diaphragm replaces Honda OEM number 16048-429-771, while the spring and O-ring correspond to Honda OEM number 16048-425-771.

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