N18B16A N13B16A 1.6T Auto Piston & Ring Set Ø77mm 11257601181 WG1261177 8744480000 For Countryman Paceman Material: cast aluminum Cylinder Bore: Ø77mm Compression Height: 28.5mm Land Height: 5.5mm Length: 51.2mm Bolt Length: 48mm Bolt Diameter: 20mm Recess Diameter: 34.7mm Fitment: Countryman Paceman with N18B16A/N13B16A 1.6T engines This piston and ring set is designed for use with N18B16A and N13B16A 1.6T engines found in Countryman and Paceman models.Constructed from cast aluminum, the piston supports effective heat dissipation to help maintain engine operating temperatures.The cylinder bore of Ø77mm and compression height of 28.5mm are engineered to align with the engine's specifications, supporting efficient combustion and proper fitment.The set includes pistons with a bolt length of 48mm and bolt diameter of 20mm, along with a recess diameter of 34.7mm, compatibility with the designated engine configuration.It corresponds to part numbers WG1261177, WG1790960, 081 PI 00110 000, 081 RS 00104 0N0, and 87-444800-00, facilitating easier identification and replacement.Designed for straightforward installation, this piston and ring set is suitable for engine rebuilds or performance.