Piston Ring, Engine

Piston ring gaps (installed) a
Upper compression ring 0.30-0.50 mm
Lower compression ring 0.30-0.50 mm
Oil scraper ring 0.40-1.40 mm

a The piston ring gaps must be distributed evenly around the circumference of the piston This also applies to the oil scraper ring elements. Align the ring gaps at 120 degrees to each other.