The Mahle Engine Piston Ring Set - Standard Size (part number 41240CP) is a direct-fit replacement for 1977-1980 Pontiac, Chevrolet, Oldsmobile, and American Motors vehicles with 2.5L engines.
Specifications:
| Top Ring Material | Carbon Steel |
| Oil Ring Assembly Material | Stainless Steel |
| Top Ring Thickness (Axial Height) | 0.0781 in |
| Oil Ring Assembly Thickness (Axial Height) | 0.1875 in |
| Piston Ring Oversize | Standard |
| Bore Diameter (in) | 4.000 |
| Second Ring Thickness (Axial Height) | 0.0781 in |
| Piston Ring Face Coating | Plasma-Moly |
| Second Ring Material | Cast Iron |
| Item Grade | Premium |
Fits: 1977-1980 Pontiac, Chevrolet, Oldsmobile, American Motors, and Jeep models including Sunbird, Phoenix, Astre, Ventura, Monza, Starfire, Concord, Spirit and more - 2.5L engines. Confirm your year, make, model, and engine before ordering.
Fitment Notes: Size Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Cast Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Chrome; Axial Height UCR-5/64in; LCR-5/64in; OCR-3/16in; Ring Type UCR:RF-13PF; LCR:RBT-10; OCR: CP-20; Deep Groove
Interchanges With: Sealed Power E381K, Sealed Power 10135KX, Sealed Power 19381K, Sealed Power 9560KX, Hastings Piston Rings PES5570, Hastings Piston Rings 2M5570
