Piston Ring, Engine

Ring Gap Top Compression Ring 0.23 - 0.38 mm (0.0090 - 0.0149 in.)
Second Compression Ring 0.35 - 0.60 mm (0.0137 - 0.0236 in.)
Oil Control (Steel Rails) 0.15 - 0.66 mm (0.0059 - 0.0259 in.)
Side Clearance Top Compression Ring 0.02 - 0.068 mm (0.0007 - 0.0026 in.)
Second Compression Ring 0.02 - 0.058 mm (0.0007 - 0.0022 in.)
Oil Ring (Steel Ring) 0.019 - 0.229 mm (0.0007 - 0.0091 in.)
Ring Width Top Compression Ring 1.472 - 1.490 mm (0.0579 - 0.0586 in.)
Second Compression Ring 1.472 - 1.490 mm (0.0579- 0.0586 in.)
Oil Ring (Steel Rails) 0.447 - 0.473 mm (0.0175 - 0.0186 in.)
Ring Groove Width
No. 1 1.51 - 1.54 mm (0.0594 - 0.0606 in.)
No. 2 1.51 - 1.53 mm (0.0594 - 0.0602 in.)
No. 3 3.030 - 3.055 mm (0.1192 - 0.1202 in.)





PISTON RING SPECIFICATION CHART