Piston ring set for Yanmar diesel engines. With Ø85mm diameter rings. Shape of the chrome-plated compression top ring is rectangular. Its thickness is 2.5 mm. The thickness of the second, taper face ring with top inner edge is 2.5mm. Thickness of the third, Napier ring is 2.5 mm. 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-PRS38. The price is given for a set of 1 piston and 4 rings. For 2-3-4 cylinder engines add 2-3-4 sets to cart.