Piston Ring, Engine

Piston Ring End Gap - First Compression Ring 0.20-0.35 mm (0.0078-0.0138 in)
Piston Ring End Gap - Second Compression Ring 0.35-0.55 mm (0.014-0.022 in)
Piston Ring End Gap - Oil Control Ring - Rails 0.25-0.76 mm (0.010-0.030 in)
Piston Ring to Groove Clearance - First Compression Ring Max. 0.055 mm (0.0022 in)
Piston Ring to Groove Clearance - Second Compression Ring Max. 0.032 mm (0.0012 in)
Piston Ring to Groove Clearance - Oil Control Ring 0.090-0.106 mm (0.0035-0.0042 in)
Piston Ring Thickness - First Compression Ring 1.170-1.190 mm (0.0461-0.0469 in)
Piston Ring Thickness - Second Compression Ring 1.471-1.490 mm (0.0579-0.0587 in)
Piston Ring Thickness - Oil Control Ring - Rail - Maximum 0.43 mm (0.0169 in)
Piston Ring Thickness - Oil Control Ring - Spacer 1.574-1.651 mm (0.0620-0.0650 in)