Hastings Piston Rings - Premium Ductile and Steel Series - 4.000 in Bore - File Fit - 1.2 x 1.2 x 3.0 mm Thick - Standard Tension - Stainless Steel - Gas Nitride - 8-Cylinder - Kit-SN9045005--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO