The highly stressed parts of the valve train assembly suffer excessive wear on the operating surface of the valves, cam-shaft, bearings, followers and rockers, and the valve springs lose their temper(springiness).
When any part of the valve gear breaks, it always means engine out and head off, sometimes even a complete strip down if metal has dropped into the sump!
So when overhauling the head, renew as many of the wear and damage prone parts as possible to ensure perfect, durable results.
Other related parts you may wish to consider:
Try this gasket seal - 08C70K0234M - for a more professional result! add as many items as you wish to the same shopping cart, new collets 14781ML0720 and retainers 14771KW3900 for example, and still only pay the same single fixed price shipping cost. This component may have other applications in the Honda model range.