Operation CHARM: Car repair manuals for everyone.

Piston Measurements

S54 3.2L Piston
S54 Piston Dia.
Piston and Pin are a matched set only replace together.
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Measuring point "A" (point is at 90 degs. to pin from lower edge of skirt) mm 9.5
Piston Dia. (point "A") -- --
STD. mm 86.965 (+/- 0.009)
1st oversize mm 87.165 (+/- 0.009)
Piston running clearance mm 0.026 - 0.058
Permissible total wear tolerance between piston and cylinder (engine operated). mm 0.15