Dimension & Clearance Specifications - Piston Rings

Groove Depth
Top Compression 4.019-40146 mm (0.158-0.163 inch)
2nd Compression 4.214-4.341 mm (0.0166-0.171 inch)
Oil Control 3.814-3.941 mm (0.150-0.155 inch)

End Gap
Top Compression 0.305-0.559 mm (0.012-0.022 inch)
2nd Compression 0.762-1.016 mm (0.030-0.040 inch)
Oil Control 0.254-0.762 mm (0.010-0.030 inch)

Side Clearance
Top Compression 0.033-0.079 mm (0.0013-0.0031 inch)
2nd Compression 0.033-0.079 mm (0.0013-0.0031 inch)
Oil Control 0.023-0.201 mm (0.0009-0.0079 inch)

Width
Top Compression 1.176-1.197 mm (0.0463-0.0471 inch)
2nd Compression 1.476-1.497 mm (0.0581-0.0589 inch)
Oil Control 1.854-2.007 mm (0.073-0.079 inch)