This one doesn't cross reference from the OEM number unfortunately so we will be unable to advise whether this one would fit.
We have the genuine number on the system which is:
https://www.lsengineers.co.uk/makita-6430-cylinder-and-piston-assembly.html?fee=2&fep=9391&utm_source=google&utm_medium=cpc&utm_campaign=google-ps&gclid=EAIaIQobChMI2ubV_bnq5wIViKztCh3lbwMNEAQYASABEgIfkPD_BwE
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