Honda motorcycle parts
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1972 Honda SL350K2 · Engine Valves Buying guide
Intake and exhaust valves are separate choices with different replacement references. Their presence together in the catalogue does not make a matched head-rebuild kit or establish that every valve should be replaced.
The intake valve is identified by reference 14711-286-030 and is sold individually. The exhaust product lists references 14721-286-305 and 14721-286-020. Preserve that distinction when preparing the order so similar-looking parts or a broad Honda application list do not blur the intended position.
Valve replacement decisions belong with the inspection of the head, guides and seats. Have the repairer confirm suitability and quantity before checkout, including the exhaust product’s supplied quantity if several are needed. Use the relevant service information for measurements and assembly rather than treating a catalogue description as a machining specification.
Identify the fitted head and each valve’s intake or exhaust position, then compare the appropriate replacement reference. Have the repairer confirm the dimensions and application before ordering for a substituted assembly.
The intake valve is explicitly sold individually. Count the intake valves approved for replacement and order that quantity; keep exhaust valves and any other head components as separate purchasing decisions.
Have the head assessed first so the replacement choices match the work required. A new valve alone does not determine whether its guide, seat or related components need attention.
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