This is a Perfect Circle/MAHLE moly piston ring set for 1997-2005 GM family passenger car models with either the 5.7L LS1 or LS6 V-8 engine.
Part Number 41850CP
MAHLE bought the Perfect Circle brand a few years ago and renamed Perfect Circle rings to MAHLE Original. Rest assured, the Perfect Circle quality that you remember from the past is still in the MAHLE Original box. Piston rings specs are as follows:
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