This kit is an OEM part direct from Craftsman for air compressors. This kit consists of the parts for building a piston cylinder in the compressor. It is recommended that you release air and unplug the air compressor before you install this kit. You will need a wrench set to replace this part. This kit includes two o-rings, piston ring clamp screw and the cylinder tube. This kit is made of metal and rubber components.
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Troubleshooting
This part fixes the following symptoms:
No compressed air
This part works with the following products:
Lawn & Garden, Compressor.
This part works with the following products:
Craftsman.
Questions and Answers
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Dennis
October 17, 2022
Does it fit this model
For model number 921-166420
Hello Dennis, thank you for your question. The Piston Kit, part number PS16348857, will fit your model. If you need help placing an order, customer service is open 7 days a week. Thanks again for your great question.
This looks like the kit but my model number is not listed.
For model number 921.16472
Hi Clayton,
Thank you for your question. We do not show this kit listed for your model, but there is a piston/cylinder kit available. The part number listed under your model number for the piston/cylinder kit is FIX9868945. If you need help placing an order for it, customer service is open 7 days a week and anyone will be happy to assist you. Please feel free to give us a call. We look forward to hearing from you!
Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
Sorry, we couldn't find any existing installation instruction that matched.
The air was bypassing the compressor gaskets and cylinder wall was worn out
1 remove cover 2 unhook air line to tank 3 remove head bolts 4 remove intake from head 5 remove flywheel bolt to free up pump piston 6 remove screw on top of piston to change out gasket 7 remove the cylinder sleeve install piston from the top 8 reassemble piston rod end and the flywheel 9 on the head cover are two gaskets one on top and one on the bottom head 10 insert intake piece and bolt the head cover back in place 11 reinstall the air line and unit cover and secure with three cover screws
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