... TRUCK & BUS Engines piston rings. United Material Piston Rings: for M.A.N. Engines Compression Ring | Intermediate Ring | Oil Ring We offer ... are used for this purpose. Application:Piston rings set for M.A.N. heavy trucks & buses engine.Engine Models: D 8613 , D ... /MF/MFA/ , D 0216 , MXUL , DO824 Euro II, I , DO826 Euro II, I , D2146 M , D2156, HMXU , D 2356HM2/HM9/HM10/HMN2/HMX ...