Piston ring set for Yanmar diesel engines. With Ø84mm diameter rings. Shape of the chrome-plated compression top ring is rectangular. Its thickness is 2.5 mm. Thickness of the second, taper face ring is 2.5mm. Thickness of the third, taper face 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-PRS37. 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.