EA113 Pistons & Rings Φ20mm 82.5mm 06D107066C N0122731 06D198151B For A3 A4 A6 Leon Material: aluminum Piston Diameter: 82.5mm (exact measurement 82.46mm) Pin Diameter: Φ20mm Ring Thickness: 82.5x1.2, 82.5x1.5, 82.5x2.0 Compatibility: Fits a wide range of A3, A4, A6, and Leon models The EA113 Pistons & Rings Φ20mm are designed to improve engine performance and durability.Constructed from aluminum, these pistons provide strength with reduced weight.The piston diameter a precise fit for compatible engines, while the Φ20mm pin diameter supports broad application across multiple vehicle types.The set includes three ring thicknesses to allow for tailored sealing solutions during rebuild or maintenance. Engineered for compatibility with various A3, A4, A6, and Leon models, this piston and ring set supports straightforward installation.All necessary components are included, such as the piston rings, making it a complete option for engine repair.The design focuses on consistent and extended engine life through accurate dimensions and materials. Compatibility : This is a third-party replacement component.Brand and model references are included solely to indicate fitment.