6pcs M272 M273 Piston & Ring 92.9mm Φ22mm 2720308917 2720309717 For CLK350 CLS350 C350 E350 GL450 3.5L V6 4.7L V8 Material: grade metal Size: Piston Diameter Φ92.9mm, Length 50.83mm, Compression Height 30.43mm Compatibility: Fits M272 E35, M273 E47 engines Design and Style: engineered with advanced cooling features Performance: optimized for performance driving Quantity: 6 pieces of piston and ring set This piston and ring set is designed for use with M272 and M273 engine platforms.With a piston diameter of 92.9mm and compression height of 30.43mm, the set supports efficient combustion and power delivery.The design incorporates enhanced cooling capabilities to support sustained under demanding conditions.The set fits models including CLK350, CLS350, C350, E350, and GL450 equipped with 3.5L V6 or 4.7L V8 engines.OE numbers 2720308917, 2720309717, and 2720304317 are referenced for compatibility verification.Each piston is paired with a three-piece ring set featuring thicknesses of 1.5mm, 1.8mm, and 2.4mm to effective sealing and heat transfer during engine.Engineered for precise fitment and consistent performance, this piston and ring set supports improved engine efficiency and durability in performance applications.