E 420 (210.072) V8-4.2L (119.985) (1997)
Piston: Service and Repair
Matching Pistons to Cylinders
Matching Pistons To Cylinders (Part 1 Of 2)
Matching Pistons To Cylinders (Part 2 Of 2)
Piston To Cylinder Matching (Part 3 Of 3)
CAUTION Cylinder identification and piston identifications must agree (see arrows).
NOTE:
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The group classification has been converted from numerals to letters and reduced to three stages.
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The pistons with numerals may be installed in a crankcase with a letter grouping, but not vice versa (see table above).
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When performing repairs, all the cylinder bores should be honed to the dimensions of the existing pistons plus piston play, see "Size Honing and
Silicone Lapping". See: Service and Repair/Measuring, Honing and Silicon-Lapping Cylinder Bores