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1973 Honda CB450K Individual Valves for Identified Engine Positions

Choose replacement valves for your 1973 CB450K from the positions identified during engine assessment. Intake and exhaust products have different replacement references and are sold individually. Keep the position and quantity together when ordering, with other cylinder-head service requirements checked separately from the valve purchase.

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Honda CB500 CB450 CL450K0 CL450K2 CL450K3 intake valve 14711-292-000

Honda CB Intake Valve ~ Replaces 14711-292-000

$26.95 USD
28-6920
Restore proper engine performance with this Intake Valve, designed as a direct replacement for the original Honda component. This valve replaces OEM part number...
New
Honda CB500 CB450 CL450K0 CL450K2 CL450K3 exhaust valve 14721-292-010

Honda CB Exhaust Valve ~ Replaces 14721-292-010

$26.95 USD
28-6919
Restore proper engine performance with this Exhaust Valve, designed as a direct replacement for the original Honda component. This valve replaces OEM part numbers...
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1973 Honda CB450K · Valvetrain Parts Buying guide

Match the valve position to its own replacement reference

Intake uses 14711-292-000, while exhaust lists 14721-292-010 / 14721-292-000. Individual supply is stated for each product. The descriptions do not provide a complete head-service inventory or the fitting measurements needed for the mechanical work.

Parts to consider

Honda CB Intake Valve ~ Replaces 14711-292-000 Individual intake replacementIntake valve referencing Honda 14711-292-000, sold individually. Match the assessed intake requirement and quantity; additional head-service parts are not listed as supplied.View part Honda CB Exhaust Valve ~ Replaces 14721-292-010 Individual exhaust replacementExhaust valve referencing Honda 14721-292-010 / 14721-292-000, sold individually. Keep exhaust identity and quantity separate from the intake order.View part

Keep position labels on a mixed valve order

An order containing intake and exhaust valves needs separate quantities beside the appropriate references. Confirm the assessed positions before placing the order; the listings do not establish that every valve must be replaced. Their shared engine application does not combine those individual products into one complete set or prove interchangeability.

Obtain service measurements from the fitted engine information

The product descriptions identify intended replacements without a complete list of clearances, dimensional limits or fitting steps. Use the appropriate information and assessment for the engine fitted to establish the work. Treat additional cylinder-head parts as separate requirements rather than inferring them from an individual valve’s application.

Buying questions

How should I organize an order containing both valve types?

Write the position beside each reference and required quantity: 14711-292-000 for intake, 14721-292-010 / 14721-292-000 for exhaust. Both purchases are individual valves. That separation helps compare the assessed replacements without turning one of each into an assumed complete head set.

Are valve dimensions and service clearances listed?

The intake and exhaust descriptions give replacement references and individual supply, without a complete list of dimensions or service clearances. Confirm those requirements for the engine actually fitted before ordering, and determine replacement quantities from the assessed valve positions.

What should I confirm if the engine’s original configuration is uncertain?

Identify the engine and valve component fitted, then compare its replacement reference and service requirements. The motorcycle year cannot document every previous engine change. These listings do not provide complete dimensions to verify an unidentified modified valve arrangement from appearance alone.

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

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