84V58 are the Mahle 2.4 CIS pistons and are correct for your motor.
The cylinders are the cast iron 84mm cylinders and are also correct.
When these engine sit for a long time without being turned and lubricated, the piston rings corrode with the cylinder bores. If the corrosion pitting in the cylinder bores is not too bad, they can be honed and re-used.
If you need either replacement cylinders or pistons, contact me as I have some good shelf stock on both.
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Tom Butler
1973 RSR Clone
1970 911E
914-6 GT Recreation in Process
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