| Piston diameter (grade 1) |
3.4435-3.4439 in (87.465-87.475 mm) |
| Piston diameter (grade 2) |
3.4438-3.4444 in (87.4725-87.4875 mm) |
| Piston diameter (grade 3) |
3.4443-3.4447 in (87.485-87.495 mm) |
| Piston-to-bore clearance |
0.0009-0.0019 in (.0225-.0475 mm) |
| Piston ring groove width - compression (top) |
0.0484-0.0492 in (1.23-1.25 mm) |
| Piston ring groove width - compression (bottom) |
0.0484-0.0492 in (1.23-1.25 mm) |
| Piston ring groove width - oil |
0.0799-0.0807 in (2.03-2.05 mm) |
| Piston skirt coating thickness |
0.0004-0.0007 in (.009-.019 mm) |