4pcs G4FJ 77.5mm Engine Piston Rings Set +0.5mm for 1.6T engine models compatible with 2011–2019 vehicles. Designed as a replacement part for engine rebuilds, this piston ring set includes four rings sized at 77.5mm with an over-size dimension of +0.5mm. Suitable for use with specific 1.6T engines requiring this specification. Includes components identified by OEM number 23410-2BCA0. Intended for automotive maintenance and repair applications. This is a replacement part from a third party. All brand/model references serve only to show intended compatibility.