It is recommended on Twin Cylinder Air Compressor Pumps that both cylinder sleeves and piston rings be replaced at the same time so that the air compressor pump will produce equal air output and not be out of balance.
This is the new style connecting rod and cylinder kit and will allow you to replace just the cylinder and piston ring in the future part number DAC-308.
K-0650 Compression Ring Kit
For Craftsman, Black and DeVilbiss, Porter Cable Compressor
The K-0650 Cylinder and Piston Ring Replacement Kit fits many model Oil-Free air compressors
Fit both the single cylinder oil-free pumps and the twin cylinder oil-free pump for Craftsman, for Dewalt, for DeVilbiss, for Porter Cable, for Makita, for Sears, for Ex-Cell, for Black
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Item# : SPM9271191929
Model # : K-0650