6pc Piston & Ring Set 92.9mm Φ22mm 2720308917 2720304317 2720302217 For CLK350 C350 E350 GLK350 3.5 M272 3.5L 4.7L Material: Cast Aluminum OEM Compatibility: 2720308917, 2720304317, 2720302217, 2720309717, 020419370501 Compression Height: 30.43mm Pin Bolt Length: 52mm Ring Thickness: 1st – 1.5mm, 2nd – 1.8mm, 3rd – 2.4mm Package Contents: 6x Piston & Ring Set This piston and ring set is designed for vehicles equipped with M272 or M273 V6/V8 engines.It fits models including CLK350, C350, E350, and GLK350 with 3.5L or 4.7L engine configurations.The cast aluminum construction provides efficient heat dissipation and resistance to corrosion, supporting engine under demanding conditions. The set matches OEM specifications, compatibility with designated engine types.It serves as a direct replacement for listed part numbers and supports consistent compression and power delivery.Each package includes six complete piston and ring assemblies with pins, providing all necessary components for a full engine rebuild. This is a replacement part from a third party.All brand/model references serve only to show intended compatibility.