Piston ring set for Yanmar diesel engines. With Ø78mm diameter rings. Shape of the chrome-plated compression top ring is rectangular. Its thickness is 2.0 mm. The thickness of the middle, Napier ring is 2.0mm. Thickness of the lower, oil control chrome-plated ring is 4.0 mm. It is characterized by a high-quality surface finish, chrome-plated rings with an extra-thick chrome coating, and a spheroidal graphite cast iron material, which is flexible and provides good protection against ring breakage. The part number of the ring set is KA-PRS32. The price is for a set of 1 piston, 3 rings. For 2-3-4 cylinder engines add 2-3-4 sets to cart.