Piston Ring, Engine

END GAP:
Top Compression Ring 0.30 - 0.46 mm (0.012 - 0.018 inch)
2nd Compression Ring 0.56 - 0.79 mm (0.022 - 0.031 inch)
Oil Control (Steel Rails) 0.25 - 0.76 mm (0.010 - 0.030 inch)

SIDE CLEARANCE:
Compression Rings 0.040 - 0.085 mm (0.0016 - 0.0033 inch)
Oil Ring (Steel Rails) 0.046 - 0.201 mm (0.0018 - 0.0079 inch)

WIDTH:
Compression Rings 1.407 - 1.490 mm (0.0579 - 0.0586 inch)
Oil Ring (Steel Rails) 0.447 - 0.473 mm (0.0176 - 0.0186 inch)