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  • 1979-80 Honda CB750 / CB650 Fuel Petcock ~ Replaces 16950-425-025
Honda CB750 CB650 fuel petcock 16950-425-025
1979-80 Honda CB750 / CB650 Fuel Petcock ~ Replaces 16950-425-025, SKU 20-8040: product photo and reviewed parts fiche. Example diagram; check listing for fitment.
Honda CB750 CB650 fuel petcock 16950-425-025
Honda CB750 CB650 fuel petcock 16950-425-025
Honda CB750 CB650 fuel petcock 16950-425-025
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60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
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Honda CB750 CB650 fuel petcock 16950-425-025

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Load image into Gallery viewer, Honda CB750 CB650 fuel petcock 16950-425-025
Load image into Gallery viewer, 1979-80 Honda CB750 / CB650 Fuel Petcock ~ Replaces 16950-425-025, SKU 20-8040: product photo and reviewed parts fiche. Example diagram; check listing for fitment.
Load image into Gallery viewer, Honda CB750 CB650 fuel petcock 16950-425-025
Load image into Gallery viewer, Honda CB750 CB650 fuel petcock 16950-425-025
Load image into Gallery viewer, Honda CB750 CB650 fuel petcock 16950-425-025

1979-80 Honda CB750 / CB650 Fuel Petcock ~ Replaces 16950-425-025

20-8040
$44.95 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 1,334 store reviews
Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
Browse all parts
1979-80 Honda CB750 / CB650 Fuel Petcock ~ Replaces 16950-425-025
$44.95 USD
Description

Replace your 1979-80 DOHC CB fuel petcock with this Fuel Petcock, replacing OEM #16950-425-025 with M16 x 1.5 threads. Please verify the thread size is correct for your bike before ordering.

Key Features
• Fuel petcock
• Replaces OEM #16950-425-025
• M16 x 1.5 thread
• Honda part name: Petcock Assy
• Interchangeable with Honda 16950-425-871

Fitment / Compatibility

• Honda CB750K (1979‑80)
• CB750L (1979) Limited
• CB750C (1980) Custom

• Honda CB650 (1979‑80)
• CB650C (1980) Custom

Part Number: 20-8040

Read More
Read Less

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

Make Model Year
Honda CB750K Standard 1979
Honda CB750L Limited 1979
Honda CB750K 1980
Honda CB750C Custom 1980
Honda CB650 1979
Honda CB650 1980
Honda CB650C Custom 1980

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.

Start your return below. Wait for our instructions before mailing a part back.

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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 tank thread and Honda OEM reference does the fuel petcock use?

One petcock with an M16 x 1.5 tank connection is included and cross-references Honda OEM 16950-425-025 for the listed 1979-1980 Honda CB650 and CB750.

What should be compared before installing the replacement petcock?

Confirm the tank thread diameter and pitch, sealing arrangement, outlet direction, hose size and lever clearance against the original valve.

What should be tested after fuel-petcock installation?

Use fuel-compatible hose and seals, confirm OFF stops flow and ON/RES operate correctly, then leak-test the tank joint, valve body and hose connection before riding.

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