This piston rings set is designed for engine rebuild, repair, and maintenance applications and serves as a replacement for worn or damaged parts.It is compatible with specified models equipped with the 3.0L OM642 diesel engine.Key Specifications: - OEM Reference Number: A6420300024 - Engine Model: OM642 - Cylinder Bore: 83.00mm - Standard Size: STD - 1st Ring Height: 2.00mm - 2nd Ring Height: 2.00mm - 3rd Ring Height: 2.00mm Compatible Vehicles: - Make: - Models: G-Class (W461, W463), Sprinter (906/B906), C-Class (W203, W204), E-Class (W211, W212), (W221), GLK-Class (X204), M-Class (W164), CLK (C209), CLS (C219), R-Class (W251), Viano (W639), Vito (W639) - Engine: 3.0L OM642 Diesel - Year Range: Varies by model, generally from 2005 to 2023 - Engine Capacity: 2987 cc