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FAQ
I have a GSZ140421 that came with a .78 piston and an ARUF43C14 that came with a .76 piston. Which one should I use?

I have a GSZ140421 that came with a .78 piston and an ARUF43C14 that came with a .76 piston. Which one should I use?

Use the piston that came with the GSZ140421 condenser.

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