Upgrade your engine's performance with the Hastings Piston Rings 4-Cyl Ring Set, designed for optimal sealing and efficiency in Nissan and Toyota models from 1982 to 1988. Reliable Construction: Crafted with durable iron, the top and second rings ensure long-lasting performance under pressure. Enhanced Oil Control: The included oil ring, with a thickness of 4.0mm, helps maintain proper lubrication, reducing wear and improving engine life. Phosphate Coated: Both the top and second ring facing materials feature a phosphate coating, enhancing durability and reducing friction for smoother operation. Complete Set: Sold as four sets, this comprehensive kit includes all necessary components for a full engine rebuild, ensuring you have everything you need. With a bore measurement of 85.500mm (3.366 inches), this piston ring set is compatible with specific Nissan and Toyota models from the mid-80s.Trust Hastings Piston Rings for quality that keeps your engine running smoothly.