1978 Honda CB750K Valves & Valvetrain Parts

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1969-78 Honda CB750 Primary Chain Tensioner ~ Genuine Honda Brand

$219.95 USD

Upgrade or restore your classic Honda motorcycle with this Primary Chain Tensioner — a genuine Honda brand part engineered for correct fit and dependable...

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1969-78 Honda CB750 High Performance Kibblewhite Valve Stem Seal Set

$49.95 USD

Upgrade your valve stem seals with this High-Performance Kibblewhite 100% Viton Valve Stem Seal Set of 8. Made in the USA by Kibblewhite, who...

Honda CB750 / CB400 Valve Stem Seal

$3.50 USD

Rebuild your CB750 top end the right way with this Valve Stem Seal, replacing OEM Ref. #12209-300-000 / #12209-300-003 / #12209-300-005 / #12209-300-010. Fits...

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Honda CB750 primary chain set 23131-300-315

1969-78 Honda CB750 Primary Chain Set ~ Genuine Honda OEM ~ Replaces 23131-300-315

$239.95 USD

Keep your engine’s primary drive running smoothly with this Genuine Honda Primary Chain Set (2 Chains), manufactured to original Honda specifications for reliable performance...

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Honda CB750A CB750K Honda exhaust valve 14721-300-015

1978 Honda CB750A / CB750K Genuine Honda Exhaust Valve ~ OEM 14721-300-015

$89.95 USD

Upgrade or restore your classic Honda motorcycle with this Genuine Honda Exhaust Valve — precision‑engineered and made in Japan. This authentic OEM part #14721‑300‑015...

Honda CB750 CB450 CB400 CB360 CB77 valve guide clip 12211-250-310

Honda CB Valve Guide Clip ~ Replaces 12211-250-310

$1.95 USD

Replace your valve guide clip with this Valve Guide Clip, replacing OEM #12211-250-310.Sold each, order the quantity you require.Key Features• Valve guide clip• Replaces...

Honda CB750 valve rocker arm a 14431-300-030

1969-78 Honda CB750 Valve Rocker Arm A ~ Replaces 14431-300-030

$74.95 USD

Upgrade or restore your classic Honda motorcycle with this Valve Rocker Arm A — high‑quality replacement engineered and made in Japan. This component replaces...

New

Honda CB750A CB750K Honda intake valve 14711-300-015

1978 Honda CB750A / CB750K Genuine Honda Intake Valve ~ OEM 14711-300-015

$89.95 USD

Upgrade or restore your classic Honda motorcycle with this Genuine Honda Intake Valve — precision‑engineered and made in Japan. This authentic OEM part #14711‑300‑015...

Honda CB750 valve rocker arm b 14432-300-030

1969-78 Honda CB750 Valve Rocker Arm B ~ Replaces 14432-300-030

$74.95 USD

Upgrade or restore your classic Honda motorcycle with this Valve Rocker Arm B — precision‑engineered and made in Japan. This high‑quality replacement is designed...

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1978 Honda CB750K · Valvetrain Parts Buying guide

Identify each valve and its supporting parts

Intake and exhaust valves use distinct references and are sold per valve. The listings also disclose possible storage age spots, while seals and rocker arms have separate product choices.

Parts to consider

1978 Honda CB750A / CB750K Genuine Honda Intake Valve ~ OEM 14711-300-015

Honda intake valveListed Honda reference 14711-300-015, sold per valve. The description discloses possible age spots from storage.View part

1978 Honda CB750A / CB750K Genuine Honda Exhaust Valve ~ OEM 14721-300-015

Honda exhaust valveSeparate Honda reference 14721-300-015, sold per valve with the same stated storage-condition caveat.View part

Individual valve stem sealThe listing covers intake and exhaust valve guides in this application. Sold individually; order the quantity required.View part

Use the specific valve listing

The intake and exhaust listings state the 1978 CB750K application and give different Honda references. Compare those references with your installed engine and valve position. The description of unused stored stock also matters when deciding whether the disclosed appearance suits your project.

Review more than the valve itself

Stem seals, rocker arms and guide clips appear as separate products in this route. They are not listed as contents of an individual valve purchase. Use your inspection to identify the additional pieces needed, then compare the named application and packaging of each selected item.

Common questions

Are these valves supplied as a complete set?

The intake and exhaust listings each say sold per valve. They are separate products with distinct references. Choose the position and quantity required for the repair, then review any additional seals or valvetrain hardware as separate purchases.

Why do the valve descriptions mention age spots?

Both featured valve descriptions disclose that unused Honda parts may show age spots after long-term storage. Review the actual product photographs and that condition statement before ordering. Ask for clarification if appearance or condition is important to your rebuild.

Does one valve stem seal purchase contain eight seals?

The featured stem seal is sold individually, and its description states eight are used on the CB750. That engine quantity does not change the package into an eight-piece set. Order the quantity required for the sealing points being serviced.

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