4pcs Ø77mm Piston Ring N18 B16 A C STD 11257601181 11257601077 11257584117 for 10-16 Countryman Paceman Cyl Bore 77.00 mm Compression Height 28.5 mm Land Height 5.5 mm Length 51.2 mm Bolt Length 48 mm Bolt Diameter 20 mm Recess Diameter 34.7 mm Fit N18B16A N13B16A 1.6T 1598cc Turbocharged Material steel Design 4 piece set with Ø77mm piston rings Compatibility specifically designed for 10-16 Cooper Countryman Paceman Performance engineered for compression and sealing Installation easy to install with standard 48mm bolts Quality specifications and fitment matched to OEM standards Optimized Performance for Your Vehicle Upgrade your vehicle with the 4pcs Ø77mm Piston Ring N18 set designed to enhance engine efficiency and longevity.These rings are made from steel to and wear resistance.With a 77mm bore diameter they are tailored for 10-16 Cooper Countryman Paceman models providing a precise fit.The rings deliver compression and sealing which is essential for maintaining engine performance Easy Installation and Compatibility Installation requires standard 48mm bolts for a secure fit.The set is designed as a direct replacement for part numbers 11257601181 11257601077 11257584117 07119903463 11257566479 WG1261177 WG1790960 081PI00110000 081RS001040N0 8744480000 a straightforward installation with no modifications needed.It is recommended to verify vehicle compatibility using the VIN code.The rings meet or exceed OEM specifications for a replacement option Built for The piston rings are built to meet engine requirements providing consistent performance and.Designed to function under temperatures and pressures these rings help maintain engine function and reduce blow by.The specifications are matched to OEM standards long term and fitment for your application This is a non- replacement.Any reference to brand names or models is strictly for compatibility purposes.