Description
Precision ring sealing directly impacts combustion efficiency, blow-by control, and overall engine durability—especially in high-performance builds where tolerances matter. MAHLE’s file-fit design gives you the ability to dial in exact ring end gaps for your specific bore diameter and application, eliminating guesswork and ensuring optimal performance. The plasma moly coating on ductile iron construction delivers superior wear resistance and reduced friction, keeping your rings sealed tight through extended racing seasons or aggressive street duty.
- Bore: 4.060 inches
- Top ring: 0.043″
- Second ring: 0.043″
- Oil ring: 3.0mm
- Material: Ductile iron
- Coating: Plasma moly
- Design: Low tension
- Fitment: File fit
- Configuration: 8-cylinder
- MPN: 4065ML-043









