Duramax Piston Ring SetPiston Rings, Plasma moly, std bore, 3. 0mm, 2. 0mm, 3. 0mm Thickness, 8 Cylinder, Set Mahle Original's automotive piston rings offer OEM type quality, premium materials, and trouble free installation. They are manufactured under strict quality controls. Most applications offer a choice of premium or standard ring sets premium ring sets contain either moly or chrome faced top compression rings for long life under severe operating conditions. The 3
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