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1979 Honda CB750K Petcocks, Cap Seals & Tank Fittings

Use this section to assemble the fittings needed around your 1979 Honda CB750K fuel tank. The selection includes a threaded petcock, cap seal, front and rear mounting rubbers and emblem screws. Check the fitted tank and compare each part with its own reference.

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Currently viewing Gas Tanks, Caps, Petcocks & Parts

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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
20-8040
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
02-6552
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
20-0096
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 CB front fuel tank holder rubber 17611-425-000

Honda CB Front Fuel Tank Holder Rubber ~ Replaces 17611-425-000

$7.87 USD
02-6551
Keep your fuel tank snugly mounted at the front with this Front Fuel Tank Holder Rubber, a direct replacement for OEM #17611-425-000. Fits the...
Honda CB750 CB650 fuel tank emblem screw set

Honda CB750 / CB650 Fuel Tank Emblem Screw Set

$4.95 USD
01-0121
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...
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1979 Honda CB750K · Gas Tanks, Caps, Petcocks & Parts Buying guide

Check the valve, cap and tank mounting pieces

The petcock specifies M16 × 1.5 threads. Front and rear tank cushions have different OEM references, and the cap seal is another separate part. Match the fitting or mounting location being repaired.

Parts to consider

1979-80 Honda CB750 / CB650 Fuel Petcock ~ Replaces 16950-425-025 Threaded replacement fuel petcockM16 × 1.5 thread specification, referenced to OEM 16950-425-025. Verify the tank thread before ordering.View part Honda CB750 / CB650 / CB400 Gas Cap Rubber Seal ~ Replaces 17632-422-000 Fuel cap rubber sealListed cap seal referenced to OEM 17632-422-000. Compare the cap actually fitted.View part Honda CB750 / CB650 Rear Fuel Tank Holder Rubber ~ Replaces 17613-425-000 Rear fuel tank cushionRear support rubber referenced to OEM 17613-425-000. The listing identifies one used per bike.View part

Related parts: Individual front tank cushion · Four tank emblem screws

Verify a replacement tank before choosing the valve

The petcock listing provides a specific M16 × 1.5 thread and expressly asks you to verify it. Use that specification on the fitted tank rather than relying only on the model badge, especially where an earlier owner has changed the tank or fuel valve.

Count cushions and emblem fasteners separately

The front tank cushion is sold individually, with two used per bike. The rear cushion is listed with one used per bike. The emblem screw set contains four screws and is described as enough for both tank emblems; choose each quantity according to the work being done.

Common questions

What is the replacement petcock thread?

The listing states M16 × 1.5 and references OEM 16950-425-025. It also asks you to verify the thread before ordering. Compare the tank fitted to your bike, particularly if it is a replacement.

Are front and rear tank rubbers interchangeable?

Choose them by their listed locations. The front cushion references OEM 17611-425-000, while the rear references 17613-425-000. Compare the original rubber and mounting position before adding either part to your order.

How many emblem screws are in the set?

The set contains four screws and references OEM 93700-04006-0G. Its description states that this is enough for both tank emblems. Compare the fitted emblems and fasteners before deciding whether you need the set.

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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