Car Engine Piston Ring For 406 607 807 407 CITROËN C8 II 2.2L 86mm 0640Q4 04017N0 The Car Engine Piston Ring is a component designed to maintain engine performance.It is compatible with 406, 407, 607, 807, and CITROËN C8 II models equipped with 2.2L engines.Constructed from engineered materials, the piston ring features an 86mm diameter with dimensions of 1.2*1.5*2.5 This is a replacement item from an aftermarket supplier.Brand names are cited solely to demonstrate device compatibility.