1979 Honda CB650 Tank Caps & Petcocks

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Honda CB750 CB650 fuel petcock 16950-425-025

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

$44.95 USD

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...

Honda CB750 CB650 rear fuel tank holder rubber 17613-425-000

Honda CB750 / CB650 Rear Fuel Tank Holder Rubber ~ Replaces 17613-425-000

$15.94 USD

Secure the back end of your fuel tank with this Rear Fuel Tank Holder Rubber, a direct replacement for OEM #17613-425-000. One used per...

Honda CB750 CB650 CB400 gas cap rubber seal 17632-422-000

Honda CB750 / CB650 / CB400 Gas Cap Rubber Seal ~ Replaces 17632-422-000

$7.95 USD

Replace your DOHC Honda gas cap rubber seal with this Gas Cap Rubber Seal, replacing OEM #17632-422-000.Key Features• Gas cap rubber seal• Replaces OEM...

Honda CB750 / CB650 Fuel Tank Emblem Screw Set

$4.95 USD

Complete your fuel tank emblem installation with this Fuel Tank Emblem Screw Set of 4, a direct replacement for OEM #93700-04006-0G. Enough hardware for...

Honda CB front fuel tank rubber cushion 17611-KE8-000

Front Fuel Tank Rubber Cushion ~ Replaces Honda OEM 17611-KE8-000

$5.50 USD

This aftermarket front fuel tank rubber cushion replaces Honda OEM 17611-KE8-000 on the listed Honda CB-series applications. It mounts to the frame and supports...

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1979 Honda CB650 · Tank Caps & Petcocks Buying guide

Check the tank, cap and supports as separate purchases

A replacement tank or cap can change which service parts fit even when the frame is still a 1979 CB650. Match the valve connection and cap design separately, then inspect the front and rear mounting rubbers for the work needed.

Parts to consider

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

M16 × 1.5 petcockFuel petcock replacing reference 16950-425-025; verify the tank thread.View part

Honda CB750 / CB650 / CB400 Gas Cap Rubber Seal ~ Replaces 17632-422-000

Fuel-cap rubber sealGas-cap seal for the 1979 application; reference 17632-422-000.View part

Honda CB750 / CB650 Rear Fuel Tank Holder Rubber ~ Replaces 17613-425-000

Rear tank-holder rubberRear tank-holder rubber replacing Honda reference 17613-425-000; listed for the 1979 CB650.View part

Related parts: Front tank cushion

Identify the offered petcock and its connection

Petcock 20-8040 replaces reference 16950-425-025. One valve is supplied with the listed M16 × 1.5 tank connection.

Check what the cap-seal listing supplies

Part 20-0096 is the rubber cap seal replacing reference 17632-422-000, with the 1979 CB650 explicitly listed in its applications. This item is a seal rather than a complete replacement cap.

Buying questions

Does an M16 × 1.5 tank connection guarantee the petcock will fit?

No. That is the offered valve thread, but the sealing arrangement, outlet direction, hose size and lever clearance still need to match. Compare the fitted tank and valve rather than relying on the frame model year or thread measurement alone.

Can I choose the cap seal by the Honda CB650 name alone?

Use the 1979 application together with reference 17632-422-000 and the cap design actually fitted. If the cap has been replaced and its identity is unknown, confirm its seal specification first; this listing gives no dimensions for comparison.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

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