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  • 1979-80 Honda CB900C / CB750F Fuel Petcock ~ Replaces 16950-438-305
Honda CB900C CB750F fuel petcock 16950-438-305
Honda CB900C CB750F fuel petcock 16950-438-305
Honda CB900C CB750F fuel petcock 16950-438-305
Honda CB900C CB750F fuel petcock 16950-438-305
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Honda CB900C CB750F fuel petcock 16950-438-305

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5.0 ( 1 review)

1979-80 Honda CB900C / CB750F Fuel Petcock ~ Replaces 16950-438-305

20-8042
$54.95 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 1,332 store reviews
Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
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1 product reviews

1979-80 Honda CB900C / CB750F Fuel Petcock ~ Replaces 16950-438-305

1979-80 Honda CB900C / CB750F Fuel Petcock ~ Replaces 16950-438-305
$54.95 USD
Description

Replace your DOHC CB's smaller-thread fuel petcock with this Fuel Petcock, replacing OEM #16950-438-305 with M16 x 1.5 threads.

Note: these bikes came with either a 14.6mm nut thread diameter (this petcock) or a 16.9mm nut thread diameter (#20-8041). Please check your bike's thread diameter to confirm which petcock you need.

Key Features
• Fuel petcock
• Replaces OEM #16950-438-305
• M16 x 1.5 thread (14.6mm nut thread diameter)
• Honda part name: Petcock Assy
• Interchangeable with Honda 16950-438-015

Fitment / Compatibility

• Honda CB750F (1979‑80) Supersport

• Honda CB900C (1980) Custom

Part Number: 20-8042

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

Make Model Year
Honda CB750F Supersport 1979
Honda CB750F 1980
Honda CB900C 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.

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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 thread size does the smaller-thread Honda CB fuel petcock use?

The smaller-thread fuel petcock uses an M16 × 1.5 thread and has a 14.6mm nut-thread diameter.

How can the correct Honda CB petcock be identified before ordering?

Measure the petcock nut-thread diameter. This version measures 14.6mm; the alternate petcock has a 16.9mm nut-thread diameter.

Which Honda OEM number does the fuel petcock replace?

The fuel petcock replaces Honda OEM number 16950-438-305.

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