MAHLE Original piston rings are the most technically advanced piston rings in the industry. Driven by OE requirements; reducing friction and ring mass while minimizing engine oil consumption, and providing longer service life. MAHLE Original piston rings lead the industry for the latest piston ring technology. PartNumber : mhl40805 Description : Engine Piston Ring Set Piston Ring Material : Plasma-Moly Ductile Iron Piston Ring Type : Premium Piston Ring Size : Standard Third Ring Material : Cast Iron Third Ring Thickness (Axial Height) : 0.938 in Top Ring Thickness (Axial Height) : 0.0938 in Top Ring Material : Ductile Iron Second Ring Material : Cast Iron Second Ring Thickness (Axial Height) : 0.0938 in Oil Ring Assembly Thickness (Axial Height) : 0.1875 in Oil Ring Assembly Material : Stainless Steel Item Grade : Premium Piston Ring Face Coating : Plasma-Moly Piston Ring Oversize : Standard Bore Diameter (in) : 4.250 1961-1965 GMC 1000 Series Base V6.5012cc Engine Components::Piston Rings 1961-1965 GMC 1500 Series Base V6.5012cc Engine Components::Piston Rings 1961-1965 GMC 2500 Series Base V6.5012cc Engine Components::Piston Rings 1967-1969 GMC C15/C1500 Pickup Base V6.5012cc Engine Components::Piston Rings 1967-1969 GMC C15/C1500 Suburban Base V6.5012cc Engine Components::Piston Rings 1967-1969 GMC C25/C2500 Pickup Base V6.5012cc Engine Components::Piston Rings 1967-1969 GMC C25/C2500 Suburban Base V6.5012cc Engine Components::Piston Rings 1968-1969 GMC C35/C3500 Pickup Base V6.5012cc Engine Components::Piston Rings 1966 GMC K1000 Pickup Base V6.-cc Engine Components::Piston Rings 1967-1969 GMC K15/K1500 Pickup Base V6.5012cc Engine Components::Piston Rings 1969 GMC K15/K1500 Suburban Base V6.5012cc Engine Components::Piston Rings 1967-1969 GMC K25/K2500 Pickup Base V6.5012cc Engine Components::Piston Rings 1967-1969 GMC K25/K2500 Suburban Base V6.5012cc Engine Components::Piston Rings 1968-1969 GMC K35/K3500 Pickup Base V6.5012cc Engine Components::Piston Rings 1965 GMC PB1500 Series Base V6.-cc Engine Components::Piston Rings 1965 GMC PB2500 Series Base V6.-cc Engine Components::Piston Rings 1963-1966 GMC Suburban Base V6.5012cc Engine Components::Piston Rings 1961-1962 GMC V3000 Forward Control Base V6.5012cc Engine Components::Piston Rings